JP2003226606A - Plant growth regulator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a readily available plant growth regulator with a simple method and having a wide action spectrum for plants, to provide a method for promoting the growth of the plants using the plant growth regulator, a method for prophylaxis of diseases in the plants and a method for increasing the sugar contents of fruits using the plant growth regulator. <P>SOLUTION: The plant growth regulator comprises an iodine-cyclodextrin inclusion compound containing iodine in an amount of 5-35 mass% based on the total mass of the iodine-cyclodextrin inclusion compound. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a plant growth regulator,
The present invention also relates to a method for promoting plant growth, a method for preventing plant diseases, and a method for increasing sugar content of fruits using the same. Specifically, the present invention is a plant growth regulator containing iodine-cyclodextrin inclusion compound as an active ingredient,
Specifically, plant growth promoters, seed treatment agents, seed coating agents, germination promoters, growth assistants, harvest improvers, photosynthesis promoters, pathogen control agents, sugar content improvers, foliar treatment agents, irrigation treatment agents and fertilizers. The present invention relates to a composition and the like, a method for promoting plant growth using the same, a method for preventing plant diseases, and a method for increasing the sugar content of fruits.

[0002]

2. Description of the Related Art Substances that affect various physiological phenomena of plants are collectively called plant growth regulators. For example, plant growth promoters, seed treatment agents and seed coating agents that promote plant growth. , Germination promoters, growth aids, harvest improvers, photosynthesis promoters, pathogen-suppressing agents, sugar content improving agents, foliar treatment agents and the like. In addition, among these, plant hormones widely distributed in higher plants and controlling their basic physiological phenomena in minute amounts, including plant hormones that are not recognized as plant hormones but exist in the natural world It also includes substances that are important in terms of application, such as substances that exhibit various physiological activities and phytochemical regulators that are used to control physiological phenomena such as crops in terms of agricultural production.

Human beings have consciously cultivated higher plants in order to secure the food necessary to maintain their survival, and agriculture has been actively carried out to this day. In this process, human beings have skillfully utilized the physiological phenomena exhibited by higher plants to enhance their productivity.The knowledge and techniques found in this agricultural production are based on the biology, plant physiology, and plant diseases. He has raised serious and suggestive issues in research fields such as science. For example, gibberellin, a plant hormone, was discovered in the process of pursuing the pathogenicity of rice scabbard disease, which was once an important disease of rice cultivation.
Abscisic acid, which is a growth-inhibiting plant hormone, was isolated as a substance that promotes fruit drop of cotton. Furthermore, ethylene, which is a plant hormone having the simplest structure, has been recognized as important because of the problems of fruit climbing and ripening.

As described above, not only a wide variety of plant growth regulators have been found in the field of agricultural production, but the accumulation of knowledge about substances involved in the physiological phenomena of plants has led to their application to agriculture. It is developing.

However, when the plant hormone is used as a plant growth regulator as described above, the plant hormone is generally obtained by extracting / isolating / purifying the plant. Can only be obtained in trace amounts. Also, in order to overcome such problems,
It is considered that the plant hormone is produced by a chemical synthesis method. However, even in this case, the chemical synthesis method often requires many steps, and safety may occur depending on a by-product. In addition to such drawbacks, plant hormones may be specifically expressed and acted only on a part of a plant, or the mechanism of action of plant hormones may differ depending on the time, amount and method of application. There was also the problem of lack of sex. For example, abscisic acid is involved in the induction of dormancy phenomena in plants such as winter buds, detachment of leaves and fruits, control of stomatal opening and closing, and delamination formation. Although it is known to promote and promote adventitious bud formation, many effects are observed only in specific plant species. In adventitious bud formation, suppression of morphological abnormalities and induction of dormancy are known,
It is considered to be beneficial during the production of artificial seeds. Further, it has been reported that cultured cells treated with abscisic acid exhibit freeze resistance, and it is considered to be used for long-term storage of cells, tissues, seeds, bulbs, seedlings and the like.
However, since chemical synthesis of abscisic acid is difficult and expensive, it has not been generally used.

Therefore, from such a background, development of a plant growth regulator which is easily available, easy to apply, and has a broad action spectrum for plants has long been strongly demanded by the parties concerned with plants. It was

[0007]

Therefore, an object of the present invention is to provide a plant growth regulator which is easily available, has a simple application method, and has a broad action spectrum for plants.

Another object of the present invention is to provide a method for promoting the growth of plants, a method for preventing plant diseases and a method for increasing the sugar content of fruits using such a plant growth regulator.

[0009]

Means for Solving the Problems The present inventors have made a detailed study on an iodine-cyclodextrin clathrate in which cyclodextrin is clathrated with iodine by appropriately adjusting the amount of cyclodextrin with respect to iodine. Cyclodextrin clathrates have no specific odor or irritation, and the seeds of plants pre-soaked in a solution containing such iodine-cyclodextrin clathrates germinate compared to untreated ones. Is suppressed, but grows more rapidly after germination and at higher yields, and plants grown with a solution containing iodine-cyclodextrin inclusion complex are sprayed compared to those that are not sprayed. It was found to grow well.

The present inventors have also found that when the iodine-cyclodextrin clathrate is dissolved in water or the like, the iodine clathrated therein replaces the water molecule, and iodine is liberated into water,
It was also found that this can exert a strong bactericidal / antibacterial property against bacteria and the like, and thereby effectively prevent powdery mildew caused by a pathogenic bacterium of the ascomycetes Udonomycetes.

The present inventors have further found that such iodine-
Cyclodextrin inclusion compound is unstable and not suitable for long-term storage.
Since it contains a very wide range of different amounts of iodine, the deodorant effect, which is the original function of cyclodextrin, is appropriately adjusted by the mixing ratio of iodine and cyclodextrin, in addition to the antibacterial and antifungal effect, which is the original function of iodine. Therefore, by mixing it with soil such as potassium bicarbonate, cyclodextrin does not give off odor to the soil, and the synergistic effect of potassium bicarbonate on photosynthesis promotion and pathogen suppression is inherent. It was also found that they can exert a growth-promoting effect on plants that have a specific combination.

In addition to the above findings, the present inventors have found that when a solution containing an iodine-cyclodextrin inclusion complex is sprayed and grown on flowers and leaves around the flowers, the sweetness (sugar content) and sweetness ratio of the fruits are increased. Was found to increase significantly.

The present invention has been completed based on the above findings.

That is, the above-mentioned various purposes are as follows (1)-
It is achieved by (14).

(1) A plant growth regulator containing an iodine-cyclodextrin inclusion compound containing 5 to 35% by mass of iodine based on the total mass of the iodine-cyclodextrin inclusion compound.

(2) The plant growth regulation according to the above (1), wherein the content of iodine in the inclusion product of iodine-cyclodextrin is 19 to 25% by mass based on the total mass of the inclusion product of iodine-cyclodextrin. Agent.

(3) The cyclodextrin is α-
The plant growth regulator according to (1) or (2) above, which is at least one selected from the group consisting of cyclodextrin, β-cyclodextrin, γ-cyclodextrin and chemically modified products thereof.

(4) The cyclodextrin is β-
The plant growth regulator according to (3) above, which is at least one selected from the group consisting of cyclodextrins and chemically modified products thereof.

(5) The iodine-cyclodextrin inclusion compound is prepared by dissolving iodine in a solution containing an iodine dissolution aid at a ratio of 1 mol of iodine to 1.5 to 5 mols of the iodine dissolution aid, and then dissolving the iodine in the solution. 0.42-4. To 1 mol of iodine.
The plant growth regulator according to any one of (1) to (4) above, which is produced by adding 2 mol of cyclodextrin to precipitate an iodine-dextrin inclusion compound.

(6) The iodine-cyclodextrin inclusion compound is obtained by heating the slurry obtained by adding cyclodextrin to a temperature of 80 to 100 ° C. and then cooling it to precipitate the iodine-dextrin inclusion compound. The plant growth regulator according to any one of (1) to (5) above, which is produced.

(7) The iodine dissolution aid is a halide of a hydrogen atom or an alkali metal or alkaline earth metal and a halogen atom, (5) or (6).
The plant growth regulator according to.

(8) The plant growth regulator according to the above (7), wherein the halogen atom is chlorine, bromine or iodine.

(9) The plant growth regulator according to (7), wherein the halide is sodium iodide or potassium iodide.

(10) A method for promoting plant growth, which comprises immersing plant seeds in advance in a solution containing the plant growth regulator according to any one of (1) to (9).

(11) A method comprising spraying the solution containing the plant growth regulator according to any one of (1) to (9) onto the soil in which the plant is grown or the stem, leaves or root of the plant. Method for promoting plant growth.

(12) Spraying the solution containing the plant growth regulator according to any one of the above (1) to (9) onto the soil in which the plant is grown or the stem, leaf or root of the plant, How to increase the sugar content of fruits.

(13) A harvest improver containing an iodine-cyclodextrin inclusion compound containing 5 to 35% by mass of iodine based on the total mass of the iodine-cyclodextrin inclusion compound.

(14) The harvest improving agent as described in (13) above, which is used for improving the harvest of cereals.

[0029]

BEST MODE FOR CARRYING OUT THE INVENTION The first aspect of the present invention is iodine-cyclodextrin containing iodine in an amount of 5 to 35% by mass, particularly preferably 19 to 25% by mass, based on the total mass of the iodine-cyclodextrin inclusion complex. It is a plant growth regulator containing an inclusion compound.

The first plant growth regulator of the present invention can easily maintain the inclusion amount of iodine and control the release thereof, and appropriately adjust the abundance ratio of iodine and cyclodextrin according to the intended use to obtain a desired amount. It is possible to adjust the effect of controlling the growth of plants, the effect of preventing diseases, and the effect of increasing sugar content of fruits. Incidentally, the iodine-cyclodextrin inclusion compound according to the present invention, the desired inclusion amount of iodine-cyclodextrin inclusion product is obtained by adjusting the addition amount of cyclodextrin, the degree of coloring by the inclusion amount of iodine. There is a slight difference between the two, but since they have almost no odor peculiar to iodine, no odor peculiar to iodine is generated even when mixed with soil or the like.

The first plant growth regulator of the present invention is
In mammals, iodine-cyclodextrin clathrates containing iodine, which is one of the essential nutrients, and cyclodextrin clathrates that are approved as food additives, have high safety. Is. Therefore, even if the iodine-cyclodextrin inclusion compound according to the present invention, iodine or cyclodextrin released therefrom by contact with water, etc. is absorbed into the plant, the plant is human or bovine,
It can be safely eaten by mammals such as pigs and sheep, and livestock such as chickens, and livestock that eat such plants (for example, cows, pigs, sheep, chickens, etc.)
Meat can be eaten safely.

As used herein, the term "plant growth regulator" means a substance that affects various physiological phenomena of plants as described above, and examples thereof include a plant growth promoter, a seed treatment agent, and a seed coat. Agents, germination promoters, growth promoters, harvest improvers, photosynthesis promoters, pathogen inhibiting agents, sugar content improvers, foliar treatment agents, irrigation treatment agents and fertilizer compositions.

The inclusion compound of iodine-cyclodextrin according to the present invention comprises a specific ratio of iodine and cyclodextrin. At this time, iodine is not particularly limited, and commercially available products may be used as they are; by heating and distilling potassium iodide and potassium dichromate, or by oxidizing a potassium iodide solution with a copper sulfate solution. Obtained by synthesizing; etc .; electrolyzing iodide present in the ash of seaweed, oxidizing by adding manganese (IV) oxide and sulfuric acid, or oxidizing through chlorine; Or reduce the iodate contained in the spa with sodium bisulfite,
Alternatively, known methods such as precipitation with sodium bisulfite and copper sulfate as copper (I) iodide and oxidation with manganese (IV) oxide and sulfuric acid, or iron (III) oxide and sulfuric acid It may be manufactured by

In the iodine-cyclodextrin inclusion compound according to the present invention, cyclodextrin is also
It is not particularly limited, and a commercially available product may be used as it is, or it may be produced by a known method such as reacting starch with an amylase derived from Bacillus macerans. In the present specification, “cyclodextrin” means 6, 7 and 8 cyclic α- (1 →
4) not only include α-, β- and γ-cyclodextrins composed of linked D-glucopyranose units, but also include, for example, methyl, propyl, monoacetyl, triacetyl and monochlorotriazinyl. It also includes these chemically modified forms such as the body. Specific examples of commercial products of cyclodextrin used in the present invention include CAVAMAX W6 and CAVAMAX W6 Pharma (both manufactured by Wacker Chemicals East Asia Co., Ltd.) α-cyclodextrin; CAVAMA
Β-Cyclodextrin commercially available as X W7 and CAVAMAX W7 PHARMA (both manufactured by Wacker Chemicals East Asia Co., Ltd.); CAVAMAX W8, CAVAMAX W8 Foo
d and CAVAMAX W8 Pharma (both manufactured by Wacker Chemicals East Asia Co., Ltd.)
Cyclodextrin; CAVASOL W7 M, CAVASOL W7 M Phar
ma- and CAVASOL W7 M TL (both manufactured by Wacker Chemicals East Asia Co., Ltd.) methyl-β-cyclodextrin; CAVASOL W7 HP and CAVASO
L W7 HP Pharma (both manufactured by Wacker Chemicals East Asia Co., Ltd.) hydroxypropyl-β-cyclodextrin; CAVASOL W7 A (both manufactured by Wacker Chemicals East Asia Co., Ltd.) monoacetyl- β-cyclodextrin; CAVASOL W7 TA (all manufactured by Wacker Chemicals East Asia Co., Ltd.) and triacetyl-β-cyclodextrin; and CAVASOL
Examples thereof include monochlorotriazinyl-β-cyclodextrin, which is commercially available as W7 MCT (all manufactured by Wacker Chemicals East Asia Co., Ltd.). Among these, considering safety and the like, β-cyclodextrin and γ-cyclodextrin approved as food additives and their chemically modified products are preferably used, and iodine-cyclodextrin inclusion compound is particularly preferably iodine. Considering that it is easy to adjust the inclusion amount of
Cyclodextrins and their chemically modified forms are most preferably used as cyclodextrins.

In the first aspect of the present invention, the iodine-cyclodextrin inclusion compound contains 5-35% by mass of iodine based on the total mass of the iodine-cyclodextrin inclusion compound, but is preferable. The content of iodine is preferably 10 to 30% by mass, more preferably 19% by mass based on the total mass of iodine-cyclodextrin inclusion complex.
Is about 25% by mass. The "iodine-cyclodextrin inclusion compound containing 19 to 25 mass% iodine with respect to the total mass of iodine-cyclodextrin inclusion compound" means that iodine is 1 mol of iodine in cyclodextrin:
It corresponds to the inclusion compound of iodine-cyclodextrin which is included at a ratio of 0.67 to 1 mol of cyclodextrin.

In the present invention, the method for producing the inclusion product of iodine-cyclodextrin is particularly preferably any method capable of producing the inclusion product of iodine-cyclodextrin suitably used in the first plant growth regulator of the present invention. There is no limitation and known methods or combinations thereof can be used in the same manner. Hereinafter, one preferred embodiment of the method for producing an iodine-cyclodextrin inclusion complex according to the present invention will be described, but it goes without saying that the present invention is not limited to the following embodiment.

That is, iodine was dissolved in a solution containing an iodine dissolution aid at a ratio of 1 mol of iodine: 1.5 to 5 mols of the iodine dissolution aid, and then dissolved in 1 mol of iodine to 0.
An iodine-cyclodextrin inclusion compound is produced by adding 42 to 4.2 mol of cyclodextrin to precipitate an iodine-dextrin inclusion compound.

In the above embodiment, iodine is dissolved by using 1.5 to 5 mol of an iodine dissolution aid with respect to 1 mol of iodine (I ₂ ). In this way, by adjusting the amount of the iodine dissolution aid used within a certain range of not less than 1.5 mol ratio and not more than 5 mol ratio of iodine, it is possible to use a conventional amount (for example, 1 mol of iodine dissolution aid to 1 mol). If iodine is dissolved,
It is possible to dissolve all the iodine in a short time (for example, 30 to 60 minutes at room temperature), compared to 2 days or more at room temperature.

Further, conventionally, for example, since the inclusion amount of iodine when the cyclodextrin was added to a solution in which 1 mol of iodine was dissolved per 1 mol of the iodine dissolution aid was also unknown, for example, iodine dissolution was performed. When potassium iodide was used as an auxiliary agent, it could be considered that KI ₃ was formed by KI and I ₂ and this was included in the cyclodextrin as it was. On the other hand, it was found that when iodine and the amount of iodine dissolution aid were adjusted to the above ranges and dissolved, and cyclodextrin was added thereto, I ₂ was included in the cyclodextrin as a result. Moreover, the inclusion amount of iodine and cyclodextrin is not limited to equimolar amounts, and it has been found that the amount of inclusion of iodine in cyclodextrin can be controlled by adjusting the amount of cyclodextrin. That is, when iodine and β-cyclodextrin have an equimolar ratio, the maximum concentration of iodine should be about 18.3 mass% [I ₂ / (cyclodextrin + I ₂ )]. According to an embodiment, an iodine-cyclodextrin inclusion compound having an iodine content of more than 19% by mass can be obtained. In addition, the iodine-cyclodextrin inclusion compound does not have the odor peculiar to iodine. Such a thing has never been known so far. The reason for this is not clear, but unlike the conventional case, it is not limited to the case where 1 mol of iodine is included as it is with respect to 1 mol of cyclodextrin. For example, 2 mol of cyclodextrin face each other to form a larger cage. It is considered that iodine is formed and 3 mol of iodine is clathrated in this.

Examples of such an iodine dissolution aid include a hydrogen atom, an alkali metal such as lithium, sodium and potassium, or an alkaline earth metal such as magnesium, calcium and barium, and fluorine, chlorine, bromine and iodine. A halide with a halogen atom is preferable, and the halogen atom is more preferably chlorine, bromine or iodine. Such iodine dissolution aids include hydrochloric acid, hydrobromic acid, hydroiodic acid, sodium iodide, potassium iodide, magnesium iodide, calcium iodide, barium iodide, sodium chloride, potassium chloride,
Examples thereof include magnesium chloride, calcium chloride, barium chloride, sodium bromide, potassium bromide, magnesium bromide, calcium bromide, barium bromide and the like. Among these, it is preferable to use sodium iodide or potassium iodide from the viewpoint of excellent solubility of iodine. The above-mentioned iodine solubilizer may be used alone or in the form of a mixture of two or more kinds, but is preferably used alone.

In the above-mentioned embodiment, the iodine dissolution aid is used in an amount of 1.5 to 5 mol times that of iodine, more preferably 1.5 to 3.0.
It is used in an amount of mole times, particularly preferably 1.8 to 2.2 mole times. At this time, if the amount of the iodine dissolution aid used is less than 1.5 times the molar amount of iodine, the solubility of iodine will be poor. On the other hand, if it exceeds 5 times the molar amount of iodine, the solubility of iodine will not change and the economy will be low. Unfavorable.

In the above embodiment, 0.42-4.2 mol of cyclodextrin is added to 1 mol of iodine in the iodine-solubilizing agent-containing solution in which iodine is dissolved in the above range. Conventionally, the inclusion amount of iodine with respect to cyclodextrin was thought to be equimolar, but it was found that the inclusion amount of iodine can be controlled in a wide range by adjusting the addition amount of cyclodextrin as in the above embodiment. . The amount of cyclodextrin added is more preferably 0.5 to 2 mol, and particularly preferably 0.67 to 1 mol, based on 1 mol of iodine. At this time, even if the addition amount of cyclodextrin exceeds 4.2 mol, the inclusion amount of iodine in the obtained iodine-cyclodextrin inclusion compound becomes small, while even if it falls below 0.42 mol. This is because it is difficult to further increase the inclusion rate. When cyclodextrin is added, the target product of iodine-cyclodextrin inclusion product is precipitated in the slurry, but it is preferable to stir to promote dissolution. In addition, since the iodine-cyclodextrin inclusion compound precipitated in the solution precipitates, it is filtered or fractionated by centrifugation or the like and dried to obtain the iodine-cyclodextrin inclusion product in the form of crystals or powder. be able to.

This centrifugation may be carried out so long as the target substance can be separated, generally 400 to 900 G, 10 to 40 minutes, more preferably 500 to 800 G, 20 to 50 minutes, particularly preferably 600 to 700 G, 30 to 30 minutes. 60 minutes.

On the other hand, in the above-mentioned embodiment, it was found that when the solution containing cyclodextrin is heated to a temperature of 80 to 100 ° C., the dilatancy of the precipitate thereafter can be suppressed very effectively. The cyclodextrin-added solution is heated to a temperature of more preferably 85 to 95 ° C, particularly preferably 88 to 92 ° C. If the temperature is lower than 80 ° C., the effect of heating is not sufficient and dilatancy is not sufficiently suppressed. On the other hand, the temperature is 10
If the temperature is higher than 0 ° C, the evaporated iodine vapor touches the wall of the vessel and is cooled, and iodine is deposited and fixed, which hinders the operation.
Dilatancy is a phenomenon in which a paste of relatively large particles sucks a liquid into the interior thereof by the action of a sudden strong external force, expands and solidifies, and recovers fluidity again when the external force is removed. That is, it is a phenomenon that occurs because the packing state of particles is temporarily changed by a sudden external force. If the above heating treatment is neglected, not only the wet crystals of the smooth cake cannot be obtained by causing dilatancy of the wet cake of the iodine-cyclodextrin inclusion product when separating the iodine-cyclodextrin inclusion product, but it is dried as it is. When it is dried with a machine, it becomes a large ingot and requires a lot of labor. For this reason, the fact that the operation of the next step is simplified by simply performing heat treatment can be said to be a treatment that greatly contributes to the improvement of production efficiency.

Such heating can be easily carried out by a method in which the outer circumference of the reactor is covered with a heating jacket and a heating medium is circulated in the heating jacket so as to attain the above liquid temperature. The heating time is 0 to 3 hours, preferably 0 to 2 hours, and particularly 0 to 1 hour after the temperature becomes high. Even if it exceeds 3 hours, there is little change in the dilatancy control effect, and production efficiency is reduced.

The slurry containing the precipitate after heating is
In order to deposit the precipitate, it is cooled to a temperature of 0 to 40 ° C, more preferably 5 to 30 ° C, particularly preferably 10 to 20 ° C. The precipitate obtained after cooling can be collected by centrifugation as in the above. Further, the precipitate after fractionation may be washed with water to remove the attached iodine and iodine dissolution aid.

In the above embodiment, the separated liquid obtained by precipitating the iodine-dextrin inclusion compound can be reused as a solution containing an iodine dissolution aid, which is environmentally and economically advantageous. Is preferable. As described above, in the above-described embodiment, iodine and an iodine dissolution aid are dissolved in a specific range, and a desired amount of cyclodextrin is added to the solution, so that an inclusion amount of iodine is included in the iodine-cyclodextrin encapsulation. A contact product can be obtained. In this case, it is important to note that the iodine-cyclodextrin inclusion compound is one that includes only iodine in cyclodextrin, which depends on the inclusion amount of iodine and the amount of iodine dissolution aid used. Does not change either. Thus, the separated liquid after separating the precipitate was found to contain the same amount of iodine dissolution aid as that added at the beginning of the production process of iodine-cyclodextrin inclusion complex, Therefore, if this is reused in a continuous production process, an iodine-cyclodextrin inclusion compound with extremely high productivity can be produced only by newly supplying iodine and cyclodextrin. Moreover, as described above, the inclusion amount of iodine with respect to cyclodextrin does not have any influence on the amount of the iodine dissolution aid used.Therefore, it is possible to change the inclusion amount of cyclodextrin by changing the amount of cyclodextrin to be added in the same line. It is possible to produce a clathrate of an iodine-cyclodextrin inclusion complex.

The first plant growth regulator of the present invention is an iodine produced as described above containing 5 to 35% by mass of iodine based on the total mass of the inclusion compound of iodine-cyclodextrin. -It contains a cyclodextrin inclusion compound as an essential component. In this case, the first plant growth regulator of the present invention may consist of only the iodine-cyclodextrin inclusion compound or may further contain other components. In the latter case, the content of the iodine-cyclodextrin inclusion complex is 10 to 90% by mass, preferably 50% by mass based on the total mass of the plant growth regulator.
-80% by mass. At this time, when the content of the iodine-cyclodextrin inclusion compound is less than 10% by mass, the iodine-cyclodextrin inclusion compound according to the present invention has an effect of promoting plant growth, an effect of preventing diseases, and an effect of increasing the sugar content of fruits. Is not sufficiently exhibited, which is not preferable.

Other components that may be added to the plant growth regulator of the present invention include vitamins A, B, C,
D, E, K and other vitamins; Cellulose, starch, inulin and other sugars; Leucine, isoleucine, valine, threonine, lysine, methionine, phenylalanine, tryptophan, histidine and other amino acids; DNA, R
Nucleic acids such as NA; organic acids; alcohols; nitrogen, phosphorus,
Other fertilizer components such as phosphoric acid, potassium, calcium, magnesium, sulfur, iron, copper, manganese, zinc, chlorine, boron, molybdenum, molybdic acid, silicon, cobalt, sodium; lactose, dextrose, sucrose, sorbitol, mannitol, Excipients such as starch, gum acacia, calcium silicate, microcrystalline cellulose, polyvinylpyrrolidone, cellulose, water, syrup, methylcellulose; diluents, fillers, carriers, talc, lubricants such as magnesium stearate and mineral oil, Examples include wetting agents, emulsifying agents, suspending agents, preservatives such as methyl hydroxybenzoate and propyl hydroxybenzoate, sweetening agents, and flavoring agents. In addition, the plant growth regulator of the present invention, for example, when used for the purpose of preventing plant diseases such as powdery mildew, if necessary, penicillin, cephem, carbapenem and monobactam antibiotics. Other known antibiotics such as β-lactam antibiotics, aminoglycoside antibiotics, macrolide antibiotics, tetracycline antibiotics, chloramphenicol, lincomycin, fosfomycin and peptide antibiotics May be included. These other components may be added alone or in the form of a mixture of two or more kinds.

Further, the plant growth regulator of the present invention is a plant hormone, a fungicide, an insecticide, a rodenticide, a herbicide, an attractant, a repellent, a chemical fertility agent, an agricultural chemical such as a fertilizer, an auxiliary agent, manure, It may be used in combination with fertilizer such as organic fertilizer such as manure and green manure, inorganic chemical fertilizer, gold fertilizer, nitrogen fertilizer, phosphate fertilizer, potassium fertilizer, silicic acid fertilizer, lime fertilizer, compound fertilizer, alkaline fertilizer, acid fertilizer and the like.

The plant growth regulator of the present invention is not particularly limited, but is used for foliar spraying treatment, root spraying treatment, soil mixing treatment, soil irrigation treatment, seed treatment, hydroponics, tissue culture. It can be applied to plants by treatment such as addition to the culture solution.

The form of use of the plant growth regulator of the present invention depends on the type of plant and the purpose of application (for example, germination promoting action, growth promoting action, growth assisting action, harvest improving action, photosynthesis promoting action, pathogenic bacterium inhibiting action, sugar content). It may be a solid or a solution such as an aqueous solution. More specifically, an emulsion (dissolved in an organic solvent and diluted with water with a liquid formulation containing a surfactant to form an emulsion), a wettable powder (a powdered mixture mixed with a clay mineral or a surfactant). Formulation, which becomes a suspension), water solvent (a powdered formulation in which a water-soluble active ingredient is mixed with a filler and a surfactant, which becomes an aqueous solution), solvent (an oil-soluble active ingredient is a filler and a surfactant) A powdery preparation mixed with an agent, which becomes a solution), a powder preparation (preparation mixed with clay mineral), a granule preparation (prepared into a granule by mixing with clay mineral), a tablet, an oil preparation and the like.

In the present invention, the amount of the plant growth regulator used depends on the type of plant, the form of use (eg, application, spraying, foliar application, soil application, etc.), the purpose of application (eg, germination promoting action, Growth promoting action, growth assisting action, harvest improving action, photosynthesis promoting action, pathogenic bacteria inhibiting action, sugar content improving action, etc.), for example, when the plant growth regulator of the present invention is used in the form of an aqueous solution, The growth regulator is 0.1 to 20 mg / ml, preferably 5 to
Used at a concentration of 10 mg / ml. Further, when the plant growth regulator of the present invention is used in soil, the iodine-cyclodextrin inclusion compound is mixed in the soil in an amount of 0.1 to 2 kg / anti, preferably 0.5 to 1 kg / anti. (In addition to the case where the solid matter is mixed with the soil, the case where the solid matter is sprayed on the foliage or the aqueous solution or the like is irrigated into the soil is also included)

The plant to which the plant growth regulator of the present invention is applied is not particularly limited and may be either grass or tree, and can be applied to all plants. For example, rice, wheat, Barley, rye, oats, millet, millet, corn, sorghum, soybean, adzuki bean,
Cereals such as peas, peanuts, kidney beans, broad beans, beans, cowpeas, lentils, root vegetables such as bamboo shoots, radish, burdock, carrots, ginger; spinach, lettuce, cabbage, leek, cabbage, celery, parsley,
Leaf vegetables such as aunt, mioga, chrysanthemum, and mustard spinach;
Peach, strawberry, lemon, summer sweet, blue plum, loquat, apple,
Fruit trees such as pears, watermelons, melons, persimmons, fruits, grapes, grapefruits, mangos, mandarins; pansies, lilies,
Flowers such as tulips, irises, buttons, cyclamen, and roses; turfgrass such as Koishi-shiba, benthushiba, omushiba; Indian rubber tree, croton, dracaena, ananas, palm, monstera, palm, benjamin, phoenix, begonia, poinsettia, anthurium, etc. Ornamental plants such as: tomato, cucumber, loofah, cucumber, Chinese millet, green pepper, okra, eggplant, pumpkin, green beans, asparagus, broccoli, cauliflower, moloheiya, edamame and the like. Particularly when the plant growth regulator is a harvest enhancer, grains, particularly preferably rice,
It is preferably used to improve the yield of wheat and barley.

In the present invention, the application period of the plant growth regulator is not particularly limited, such as before sowing, at sowing, seedling, growing season, flowering season and maturation stage.

The plant growth regulator of the present invention can also control the residual amount of iodine contained in the iodine-cyclodextrin inclusion complex by heating (warming) or the like. This is because when the temperature of the soil rises due to solar heat after premixing / spraying the plant growth regulator / the solution thereof of the present invention into the soil, iodine from the iodine-cyclodextrin inclusion compound in the plant growth regulator is increased. Increase the release amount of. By appropriately controlling the temperature of the soil by utilizing such a phenomenon, the growth of plants can be promoted more efficiently, the sugar content of fruits can be improved, and the excellent bactericidal and antifungal effects of iodine can be obtained. It can be effectively used to prevent plant diseases caused by bacteria and mold. In addition to the above advantages,
Due to the deodorizing effect of cyclodextrin, which is the other component of the inclusion compound of iodine-cyclodextrin, there is little or no off-flavor on soil, plant stems, leaves or roots even after long-term storage.

As described above, the amount of iodine released from the iodine-cyclodextrin inclusion complex (that is, the amount of iodine remaining in the iodine-cyclodextrin inclusion complex) may be controlled by controlling the temperature. The temperature of the soil in this case is
There is no particular limitation as long as iodine is released to the extent that it can impart desired characteristics to soil, for example, sterilization / antifungal properties, but does not affect the odor of soil. is not. Specifically, the soil temperature is 20 to 7
It is 0 ° C, particularly preferably 40 to 60 ° C. The means for achieving such a soil temperature is not particularly limited, but for example, in summer, the field surface is covered with a film such as mulch film to increase the soil temperature by using solar heat; embedded in soil in advance. To raise the soil temperature by introducing steam or heated gas into the heated pipe; and to add the lime nitrogen and organic matter to the soil to raise the soil temperature by utilizing the heat generated by contact with fermentation heat and water And so on.

The plant growth regulator of the present invention, particularly the iodine-cyclodextrin inclusion compound contained as an essential component, has the effect of promoting the growth of plants from seeds, as described in more detail in the Examples below. It has been found. Accordingly, a second aspect of the present invention comprises presoaking the seeds of the plant in a solution containing the first plant growth regulator of the present invention, and / or comprising the first plant growth regulator of the present invention. A method for promoting the growth of plants, which comprises spraying the solution onto the soil in which the plants are grown or the stems, leaves or roots of the plants. In the present invention, both the above-mentioned seed soaking and solution spraying can efficiently promote the growth of plants, and thus the above-mentioned two steps may be used alone or in combination of the above-mentioned two steps. .

In the present invention, the plant growth regulator is dissolved, dispersed or suspended in a solvent to prepare a solution (including a dispersion or suspension) containing the plant growth regulator. Considering that the cyclodextrin inclusion product can be uniformly and maximally contacted with the seed, it is preferable to dissolve the plant growth regulator in the solvent. The solvent that can be used at this time is not particularly limited as long as it can dissolve the plant growth regulator, and examples thereof include water; alcohols such as methanol, ethanol and isopropyl alcohol. Of these, water is particularly preferred. This is because in the presence of water, some iodine is released from the iodine-cyclodextrin inclusion complex and released into the soil, or is absorbed by the surface of the stem, leaf or root, and as a result, odor is emitted to the soil. Because a small amount of iodine is replaced with water molecules and released without affecting the effects of the above, this exerts a plant growth promoting effect, antibacterial / mildew-proofing properties (disease preventive effect) and sugar content improving effect. is there. At this time, the water is sufficient to be the water originally contained in the soil or generally added for the purpose of breeding the plant, and it is not particularly necessary to add it separately from the outside for the purpose, but if necessary. Water may be added as appropriate. Note that, as described above, even when water is not present during the heating of soil, iodine is appropriately released from the clathrate by heating treatment, etc., although it is a trace amount, and as a result, the plant is also heated. Has the effect of promoting growth, antibacterial and antifungal properties (effect of preventing diseases) and improving sugar content.

In the present invention, the concentration of the plant growth regulator in the solution is not particularly limited as long as it is a concentration capable of effectively promoting the growth of the target plant, but is preferably 0.1 to 20 mg / ml, more preferably Is 5-10 mg
/ Ml.

The amount of the plant growth regulator used is not particularly limited as long as it is a concentration capable of effectively promoting the growth of the target plant, but is preferably 0.5 to 100 per day.
The iodine-cyclodextrin inclusion complex is added in an amount of mg, preferably 10 to 20 mg. At this time, if the amount of the plant growth regulator used is less than 0.5 mg, the amount of the plant growth regulator is too small to efficiently contact seeds or stems, leaves, roots, etc., and therefore the plant growth promoting effect. Can't get enough. On the contrary, even if it exceeds 100 mg, the effect corresponding to the addition is not obtained, it is not economical, and it may not be completely dissolved in the solvent to generate a precipitate. In addition, since iodine is released from the clathrate as the vapor pressure of iodine increases by heating, the amount of iodine-cyclodextrin clathrate added is not necessarily within the above range, and the iodine release It needs to be decided considering the amount.

As one aspect of the growth promoting method of the present invention,
Pre-soaking the seeds of the plant in a solution containing a plant growth regulator. As a specific example of the seed treatment method in this case, a method of dissolving a plant growth regulator in water at the above predetermined concentration to prepare an aqueous solution, and immersing the seed in this aqueous solution for several minutes to several days; After soaking the seeds in an aqueous solution of the agent for several minutes to several days, the seeds are dried, and the seeds are further coated with a resin or the like, and the plant growth regulator of the present invention is slowly treated with the iodine-cyclodextrin inclusion complex. Release property may be imparted. The resin used in the latter method is not particularly limited as long as it does not inhibit the object of the present invention, and in order to further promote the effect, it contains the plant growth regulator of the present invention. Good. For example, seeds can be coated with a mixture of an inorganic substance such as diatomaceous earth, calcium carbonate and talc and a plant growth regulator with a binder such as starch, gelatin and polyvinyl alcohol.

Another embodiment of the growth promoting method of the present invention includes a step of spraying a solution containing a plant growth regulator onto the soil, or the stem, leaves or root of the plant where the plant is to be grown. As a specific example in this case, a plant growth regulator is dissolved in water at the above-mentioned predetermined concentration to prepare an aqueous solution, and the aqueous solution is added to soil or a plant stem, leaf or root at 0.1 to 20 mg / day. cm ² surface area, preferably 5-10
Spray so that an amount of mg / cm ² surface area of iodine-cyclodextrin inclusion complex is added. At this time, as the spraying, the predetermined amount of the aqueous solution may be sprayed at once, or may be sprayed several times (for example, 2, 3 or 4 times). At this time, if necessary, the aqueous solution may contain other components as described above. In addition, since iodine is released from the clathrate as the vapor pressure of iodine increases by heating, the amount of iodine-cyclodextrin clathrate added is not necessarily within the above range, and the iodine release It needs to be decided considering the amount.

Thus, it is easy to pre-soak the seeds of the plant in the solution containing the plant growth regulator or spray the solution containing the plant growth regulator onto the soil or the stem, leaves or root of the plant where the plant is grown. Different treatment methods can significantly promote plant growth. The type of plant at this time is
It is not particularly limited, and it may be either grass or tree, and specific examples include the examples listed above.

The plant growth regulator of the present invention, particularly the iodine-cyclodextrin inclusion compound contained as an essential component, has the action of preventing plant diseases such as powdery mildew as described in more detail in the following examples. It turned out that there is. Therefore, a third aspect of the present invention is a method for preventing plant diseases, which comprises spraying a solution containing the first plant growth regulator of the present invention onto the soil, or the stem, leaves or root of a plant on which the plant is grown. Is. In the following description, description of the same parts as those in the first and second embodiments of the present invention will be omitted here.

The exact mechanism of the second method of the present invention is unknown, and the present invention is not limited by the following, but when the plant growth regulator of the present invention is introduced into an aqueous medium such as water, Iodine contained in the plant growth regulator-Iodine and water molecules clathrated in the inclusion complex cyclodextrin is substituted, as a result, a small amount of iodine in the soil that does not affect the odor, etc., Alternatively, it is considered that it is released and absorbed on the surface of the stem, leaf, or root of the plant, whereby the antibacterial property by iodine is exerted, and the plant disease caused by bacteria can be significantly prevented (suppressed). Further, even when the plant growth regulator of the present invention is used in a dry state, by heating or the like as described above, iodine is a degree to prevent contamination of undesirable organisms such as bacteria and mold. The clathrate releases a sufficient amount of iodine that does not add odor to the soil, which also exerts its antibacterial properties, resulting in significant prevention (suppression) of plant diseases caused by bacteria. it is conceivable that.

As a specific example of the method for preventing plant diseases of the present invention, a plant growth regulator is added to water in an amount of 0.1 to 20 mg / m 2.
l, preferably 5 to 10 mg / ml to prepare an aqueous solution, and the aqueous solution is applied to the soil, plant stem, leaves or root at 0.1 to 20 mg / cm ² surface area per day, preferably 5 to An amount of 10 mg / cm ² surface area of iodine-cyclodextrin inclusion compound was added,
To spray. At this time, the spraying may be performed by spraying the predetermined amount of the aqueous solution at once or several times (for example, 2, 3 or 4).
It may be sprayed separately. At this time, if necessary,
The aqueous solution may contain other components as described above. In addition, since iodine is released from the clathrate as the vapor pressure of iodine increases by heating, the amount of iodine-cyclodextrin clathrate added is not necessarily within the above range, and the iodine release It needs to be decided considering the amount.

In the present invention, particularly when the plant disease is powdery mildew, it is preferable to further include potassium bicarbonate in the solution containing the plant growth regulator. Potassium bicarbonate is known to be effective against powdery mildew caused by mold such as leaves when combined with an emulsifier,
Although potassium bicarbonate itself does not have a bactericidal activity for controlling pathogenic bacteria and pests, an excess of potassium in the cells of the pathogenic bacteria eventually exerts an effect of suppressing the disease, but at this time, iodine according to the present invention is used. This is because the inclusion product of cyclodextrin is considered to function in place of the emulsifier. At this time, the amount of potassium bicarbonate added was iodine-
It is not limited as long as the synergistic effect with the cyclodextrin inclusion compound is significantly obtained, but with respect to the iodine-cyclodextrin inclusion compound contained in the plant growth regulator,
Preferably 10 to 90% by mass, more preferably 50 to 8%
It is 0 mass%.

Thus, plant diseases can be significantly prevented by a simple treatment method of spraying a solution containing a plant growth regulator onto the soil or the stem, leaves or root of the plant on which the plant is grown. , As plant diseases at this time, plant viral diseases such as dwarf disease (rice, wheat), striped leaf blight (rice), goblet disease (potato), mosaic disease (potato, tobacco, tomato, radish) ;
Diseases caused by agricultural pests that cause direct and indirect damage to crops such as Meichu, leafhoppers, etc .; as well as wilt disease (sweet potato, spinach, tobacco, carnation), vine cracking disease (sweet potato, cucumber), purple leaf blight (Sweet potato), black blight (sweet potato, potato), scab (potato), seedling blight (currants), plague (currants, strawberries, tobacco), black spot rot (melon), wilt of half body (Eggplant, tomato), bacterial wilt (eggplant), white silkworm (tomato, green beans), wilt (tomato, spinach, parsley, carnation), bacterial wilt (tomato), chlorosis (strawberry, cruciferous vegetables, Celery), root rot (spinach, carrot, pea), clubroot (brassica vegetables), root constriction (brassica vegetables), yellowing disease (brassica vegetables, Lely),
Filamentous fungi such as dry rot (carrot), black root (tobacco), dwarf disease (tobacco), powdery mildew (wheat, cucumber, adzuki bean, buckwheat, tobacco, peach, grape), blast (rice), etc. ,
Examples include diseases caused by bacteria such as ascomycetes.
Among these, the plant growth regulator of the present invention is a parasite of powdery mildew and the incomplete fungus Biliclaria oryzae, which damages many plants and causes lesions such as powdered rice on the surface of leaves and young branches. Especially effective for blast disease caused by

The plant growth regulator of the present invention, particularly the iodine-cyclodextrin inclusion compound contained as an essential component, increases the sugar content of fruits such as watermelon, strawberry and lemon as described in more detail in the following examples. It was also found to have the effect of Accordingly, the third aspect of the present invention is a method for increasing the sugar content of fruits, which comprises spraying a solution containing the first plant growth regulator of the present invention onto the soil, the plant, the stem, the leaves or the root of the plant where the plant is grown. Is.

Specific examples of the method for increasing the sugar content of fruits of the present invention include a plant growth regulator in water of 0.1 to 20 mg / m 2.
l, preferably 5 to 10 mg / ml to prepare an aqueous solution, and the aqueous solution is applied to the soil, plant stem, leaves or root at 0.1 to 20 mg / cm ² surface area per day, preferably 5 to An amount of 10 mg / cm ² surface area of iodine-cyclodextrin inclusion compound was added,
To spray. At this time, the spraying may be performed by spraying the predetermined amount of the aqueous solution at once or several times (for example, 2, 3 or 4).
It may be sprayed separately. At this time, if necessary,
The aqueous solution may contain other components as described above. In addition, since iodine is released from the clathrate as the vapor pressure of iodine increases by heating, the amount of iodine-cyclodextrin clathrate added is not necessarily within the above range, and the iodine release It needs to be decided considering the amount.

As described above, the sugar content of fruits can be significantly increased by a simple treatment method of spraying a solution containing a plant growth regulator onto the soil in which the plants are grown or the stems, leaves or roots of the plants. Fruits that can increase sugar content include watermelon, strawberries, lemons, peaches, summer sweets,
Blue plum, loquat, apple, pear, melon, oyster, fig, grape, grapefruit, mango, mandarin orange, etc.

[0073]

EXAMPLES The present invention will be described in detail below with reference to examples.

Example 1 A 200 l GL reactor was charged with 100 liters of water and 9.88 kg (59.5 mol) of potassium iodide and dissolved at room temperature. Then 7.56 kg (29.8 mol) of powdered iodine
Was charged and dissolved by stirring for 60 minutes.

Β-cyclodextrin 22.68
After charging kg (20 mol), the mixture was stirred at room temperature for 30 minutes, heated to 90 ° C., and immediately cooled to 20 ° C.

The precipitated iodine-β-cyclodextrin inclusion product was centrifuged, and the separated liquid adhering thereto was washed with water to obtain a wet crystal iodine-β-cyclodextrin inclusion product in a 200 l GL conical dryer at 4.7 kPa. , 7
It was dried at 5 ° C. for 2 hours. As a result, dry iodine-β-
28.92 kg (yield 95.6% by mass) of a cyclodextrin inclusion compound (hereinafter referred to as "CDI") was obtained. The iodine content of this product was 22.4% by mass, and no odor peculiar to iodine was felt.

Example 2 The CDI obtained in Example 1 was dissolved in water to a concentration of 10 mg / ml (hereinafter referred to as "CDI aqueous solution"). As shown in Table 1 below, wheat and barley seeds were added to this CDI aqueous solution or distilled water, respectively.
After soaking for a total of 72 hours, the lengths of the stems and roots after 72 hours were measured. The same experiment was repeated 3 times at intervals of several months, and the average lengths of stems and roots are shown in Table 1 below. In addition,
In Table 1 below, “−” indicates that the seed was immersed in distilled water, and “◯” indicates that the seed was immersed in the CDI aqueous solution.

[0078]

[Table 1]

From the results shown in Table 1 above, it can be seen that when both wheat and barley seeds are immersed in the CDI aqueous solution, the seed development is suppressed.

Example 3 The CDI obtained in Example 1 was dissolved in water to a concentration of 10 mg / ml (hereinafter referred to as "CDI aqueous solution (1)"). Wheat and rye seeds were each dipped in the CDI aqueous solution (1) for 72 hours.
Next, these seeds were sown on soil and grown in a greenhouse for 21 days. At this time, water was sprinkled once a day. After 21 days, the developed wheat and rye were plucked, and the weight of the stem and the root was measured. In addition, the thing which used the distilled water instead of the CDI aqueous solution (1) was made into the comparison control. The results are shown in Table 2 below.

[0081]

[Table 2]

From the results shown in Tables 1 and 2 above, C
The seeds soaked in the DI aqueous solution are suppressed in their growth while being soaked in the CDI aqueous solution, but after being sowed in the soil, they grow beyond the growth of the control plant, and the growth rate is high in a short period of time. It is shown to grow at a rate.

Example 4 In the same manner as in Example 3, wheat seeds were soaked in the CDI aqueous solution (1) for 72 hours and then allowed to grow in a greenhouse for 4 weeks to obtain wheat stem length and root length and dryness. The weight was measured. The dry weight is expressed as the weight when the lengths of the stems and roots of wheat are measured and the stems and roots are heated and dried under reduced pressure at 90 ° C. for 15 hours. The results are shown in Table 3 below.
Shown in.

[0084]

[Table 3]

Example 5 In the same manner as in Example 3, spring barley seeds were dipped in the CDI aqueous solution (1) for 72 hours and then grown in a greenhouse for 4 weeks, and the number of leaves of each spring barley was counted. , The weight of the ears was measured. In addition, the said experiment was performed 4 times and made the average value the result. The results are shown in Table 4 below.

[0086]

[Table 4]

From this, it can be seen that spring barley treated with the CDI aqueous solution showed an increase in the number of leaves and the weight of the panicle as compared with the control which was not treated with the CDI aqueous solution.
It is considered that DI has an effect of improving yield.

Example 6 The CDI obtained in Example 1 was dissolved in water to a concentration of 2 g / 100 ml (hereinafter referred to as “CDI aqueous solution (2)”). Oat and barley seeds were dipped in this CDI aqueous solution (2) for 72 hours. Next, the seeds of oats and barley treated in this way were sown on 1 ha of land respectively, and 10
It was grown for a week. The harvested amount of oats and barley thus grown was measured. As a result, the yield of oats and barley was about 1.2 per ha, respectively.
% And about 2.4% increase.

Example 7 50 liters of flower and vegetable soil made by Healthy Earth Co., Ltd. (this contains the minimum nutrients necessary for the initial development) and 50 liters of red ball soil were mixed, This was used as the base soil. About 8 liters of this base soil was put into 12 planters. Of these, 4 planters had calcium-containing organic fertilizers (trade name: professional use,
Manufacturer: KYOKUTO (existing), seller: Fuji Organic Co., Ltd. (200 g each) was added, and this planter was called "pro-use". In addition, for the other four planters, humic acid-containing organic fertilizer (trade name: Earth Saver, manufacturer: KYOKUTO, distributor: Fuji Organic Co., Ltd.)
200 g each was added, and this planter was called "Earth Saver". Furthermore, each of these planters was divided into four sets, with three types of planters having different types of organic fertilizers as one set. Among these, two sets of planters were each seeded with 100 seeds of kissme radish radish at an appropriate interval. In the remaining two sets of planters, 100 seeds of white cherish (radish radish) were sown at appropriate intervals.

Separately, 1 g of CDI obtained in Example 1 was used.
Dissolved in water to a concentration of / 100 ml (hereinafter,
"CDI aqueous solution (3)").

20 ml of the thus-prepared CDI aqueous solution (3) was sprayed to each planter of each set every week on the above-mentioned planters. Further, as a comparative control, water was used instead of the CDI aqueous solution (3). Four weeks later, the germination rate was calculated by counting the number of shoots of the 20-day radish germinated on each planter. The results are shown in Table 5 below.

[0092]

[Table 5]

From these results, it was confirmed that the germination rate of both Kisumi Twenty-day Radish and White Cherish was improved by the treatment with the CDI aqueous solution.

The weight and the diameter of each of the 5 germinated Kisumi 20-day radish were measured.
5 radish removed from planter sprayed with 3% CDI aqueous solution
The average weight of the book is 20.9 g and the average diameter is 1.
It was 55 cm. On the other hand, the average weight of 5 radishes extracted from a planter sprayed with only water is 11.89.
The average diameter was 0.57 cm, and it was shown that the weight and the diameter of the radish were significantly increased by the treatment with the CDI aqueous solution.

Example 8 In the same manner as in Example 7, two planters containing only the base soil, two planters for professional use and one for earth saver were prepared.

To these six planters, 14 and 10 seeds of Yamashiro Kuro Sando rape beans and Sanshaku Sasage seeds (both manufactured by Tohoku Co., Ltd.) were sown, respectively. Of these, to each one planter, separately, 20 ml each of the CDI aqueous solution (4) prepared by dissolving the CDI obtained in Example 1 in water to a concentration of 1 g / 100 ml was added to the planter every week. Sprayed. As a comparative control, water was used instead of the CDI aqueous solution (4). After 2 weeks, all the seeds had germinated, so the lengths of these above-ground stems were measured.

As a result, the CDI was required for the growth of the base soil.
Although the growth promotion effect by CDI was not observed, the stem growth promotion effect by CDI was observed in the pro-use planters and the plant of Earth Saver to which the organic fertilizer was added.

Example 9 In the same manner as in Example 7, two planters containing only the base soil, two planters for professional use and one for earth saver were prepared.

Six seedlings of Saba chrysanthemum were sown on 6 of these planters. Of these, 1 g / g of the CDI obtained in Example 1 was separately added to one planter of each type.
20 ml each of the CDI aqueous solution (5) dissolved in water to a concentration of 100 ml was sprayed on the planter every week. Further, as a comparative control, water was used instead of the CDI aqueous solution (5). Two weeks later, the germination rate was calculated by counting the number of buds of Obana shungiku that germinated on each planter.
The results are shown in Table 6 below.

[0100]

[Table 6]

From the results shown in Table 6, it was confirmed that the germination rate of Obana harugiku was improved under all the conditions under the condition where CDI was added, as compared with the condition where CDI was not added.

Example 10 Three pro-use planters were prepared in the same manner as in Example 7.

Separately, 1 g of CDI obtained in Example 1 was used.
A CDI aqueous solution (6) was dissolved in water to a concentration of / 100 ml.

Immediately after sowing, 1) 20 ml of CDI aqueous solution (6); 2) 10 ml of potassium bicarbonate and 10 ml of CDI aqueous solution (6) respectively; and 3) 20 ml of water as a control, immediately after sowing the slender leek. The whole plant (including the root) was sprayed once a week for 4 weeks (4 times, 80 ml in total). In this example, water was given to all planters in sufficient amounts every day. Twenty random slender green onions were pulled out every 30 days, and the total dry mass of each was measured. The results are shown in Table 7 below.

[0105]

[Table 7]

From Table 7, it was found that the combination of CDI and potassium bicarbonate can improve the yield of slender leek.

Example 11 In Example 10, the seeds of Kujo Daikon were used in place of the seeds of the slender green onions, and the plants were grown for 5 months, and the total amount of the onion bodies and roots after 1 month and 5 months was increased. The dry weight and average length were measured respectively. The results are shown in Table 8 below.

[0108]

[Table 8]

From Table 8, it was found that the combination of CDI and potassium bicarbonate can significantly improve the weight and length of Kujo leek.

Example 12 Watermelon and strawberry seeds, 5 seeds each, in a field (2 tsubo)
The seeds were sown in two places, and in one field, the CDI aqueous solution (7) obtained by dissolving the CDI obtained in Example 1 in water to a concentration of 1 g / 100 ml was added to 125% in terms of solid content.
The amount of g was sprayed uniformly every week, and the other field was sprayed with the same amount of water every week in the same manner. When watermelon and strawberry became, the sugar content of them was measured. On average, the sugar content of watermelon was increased from 10 Brix% to 14 Brix% by treating with CDI, and the sugar content of strawberry was C Brix.
By treating with DI, 8 Brix% to 11B
Since it was increased to rix%, it is considered that CDI has an action of increasing the sugar content of fruits.

Example 13 A 0.1% by mass aqueous solution of CDI obtained in Example 1 was added to 50 parts.
The flower was sprayed with 0 liters / Are, 5 times at intervals of 15 days since the flowering of the lemon. For each of the CDI-treated and untreated groups of lemons thus obtained, 10
When the sugar content and acidity were measured individually, the acidity of lemon showed almost the same value regardless of whether or not CDI was treated, but the sugar content of lemon was about 7 (Brix%) to about 10.5 on average. (Brix%). CD from now on
It is considered that I has the effect of increasing the sugar content without changing the acidity of lemon, that is, improving the sweetness ratio (= sugar content / acidity).

[0112]

INDUSTRIAL APPLICABILITY The present invention provides a plant growth regulator containing an iodine-cyclodextrin inclusion complex containing 5 to 35% by mass of iodine based on the total mass of the iodine-cyclodextrin inclusion complex; Consisting of pre-soaking the seeds of the plant in a solution containing the agent, and / or spraying the solution containing the plant growth regulator onto the soil, or the stems, leaves or roots of the plants on which the plants are grown, A method for promoting plant growth; a method for preventing plant diseases, which comprises spraying a solution containing the plant growth regulator onto the soil, or the stem, leaves or root of the plant on which the plant is grown; and the plant growth regulator. The present invention relates to a method for increasing the sugar content of fruits, which comprises spraying a solution containing the same onto the soil in which the plants are grown or the stems, leaves or roots of the plants.

Since the plant growth regulator of the present invention contains an iodine-cyclodextrin inclusion compound in which iodine is included in cyclodextrin by appropriately adjusting the amount of cyclodextrin with respect to iodine, it is unstable and suitable for long-term storage. In addition, iodine can exist in a stable form for a long period of time, and due to the mixing ratio of iodine and cyclodextrin, the original function of iodine is to promote plant growth, antibacterial and antifungal properties (disease preventive effect), and improved sugar content. The effect and the deodorizing effect which is the original function of cyclodextrin can be appropriately adjusted and simultaneously exerted.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Tate Iwao             3-3-3 Nihombashi Muromachi, Chuo-ku, Tokyo             Nichiho Chemical Co., Ltd. (72) Inventor Keiji Terao             28-2 Taihatahigashi-cho, Suma-ku, Kobe-shi, Hyogo F-term (reference) 4H011 AA01 AA03 AB03 BA04 BB18                       BC08 DA02 DC08 DD03 DE15                       DF04 DG03

Claims (8)

[Claims] 1. A plant growth regulator containing an iodine-cyclodextrin inclusion compound containing 5 to 35% by mass of iodine based on the total mass of the iodine-cyclodextrin inclusion compound. 2. The plant growth regulator according to claim 1, wherein the content of iodine in the inclusion product of iodine-cyclodextrin is 19 to 25% by mass based on the total mass of the inclusion product of iodine-cyclodextrin. 3. The plant growth regulator according to claim 1 or 2, wherein the cyclodextrin is at least one selected from the group consisting of β-cyclodextrin and chemically modified products thereof. 4. A method for promoting plant growth, which comprises immersing plant seeds in advance in a solution containing the plant growth regulator according to any one of claims 1 to 3. 5. A method comprising spraying a solution containing the plant growth regulator according to claim 1 onto the soil, the stem, the leaves or the root of the plant on which the plant is grown.
Method for promoting plant growth. 6. A method comprising spraying a solution containing the plant growth regulator according to claim 1 onto the soil, or the stems, leaves or roots of the plant on which the plant is to grow.
How to increase the sugar content of fruits. 7. A harvest improver containing an iodine-cyclodextrin inclusion compound containing 5 to 35% by mass of iodine based on the total mass of the iodine-cyclodextrin inclusion compound. 8. The harvest enhancer according to claim 7, which is used for enhancing the harvest of cereals.