JPH0787845A - Plant growth promoter and method for promoting plant growth - Google Patents

Abstract

PURPOSE:To promote seed germination and rooting and promote plant growth by raising a plant in an atmosphere containing specific compound(s) such as eugenol. CONSTITUTION:A plant is raised in an atmosphere containing at least one kind of compound (plant growth promoter) selected from eugenol, beta- caryophyllene, geranyl acetate, citronellol, alpha-pinene, cis-3-hexenol, isoeugenol, linalool, linalool oxide, phenethyl alcohol, benzyl alcohol, Betula winter bud essential oil component, geraniol and benzyl acetate. The concentration of the plant growth promoter(s) in the atmosphere is pref. 1-100ppm.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a plant growth promoter and a method for promoting plant growth. More specifically, in cultivating useful plants in horticulture, etc., by cultivating the facility under an atmosphere of a specific compound, The present invention relates to a promoter for accelerating plant growth and a plant growth promoting method using the promoter.

[0002]

2. Description of the Related Art Conventionally, the use of plant hormones has been studied as a method for promoting the growth of plants. Examples of plant hormones include auxins, gibberellin, ethylene and the like. Although not a plant hormone, steviol, Sativenediol, and helmintsporic acid (Helmint) have gibberellin-like activity.
hosporic acid) is being studied. In addition, there are 2-chloroethylphosphonic acid and its derivatives as a composition that stimulates the internal synthesis of auxin or auxin inducer.

However, among these plant hormones, weeding with auxin, ripening of fruits with 2-chloroethylphosphonic acid, and seedlessing of grapes with gibberellin have been put to practical use, but plant hormones are expensive. In addition, it is rarely used for the purpose of accelerating the growth of plants because it may affect the growth of plants depending on the method of use.

Other than plant hormones, plant growth promoters containing resorcinol, orcinol, etc. as a main component (JP-A-62-9083) and plant growth regulators containing cresol, chlorophenol, etc. as a main component. (Japanese Patent Publication No. 60-500816) is proposed. For the latter, by combining a derivative such as cresol or chlorophenol with 2-chloroethylphosphonic acid,
It is described that the use of a small amount promotes the growth, but the use of an excessive amount adversely affects the growth inhibition of plants.

Further, as a utilization of natural extracts, N. fries
And P. Glasare et al. Used Pinu of Pinaceae to promote the growth of wood-destroying fungi.
It has been announced that terpenoids and cyclic aldehydes extracted from s silvestris are effective. On the other hand, PFRice et al. Found that wood dry distillation showed growth inhibition in higher plants but growth promotion in basidiomycetes, and a bioassay using kidney beans revealed that it was an oxidative decomposition product of wood fat. Aldehydes are announced as inhibitors.

[0006]

DISCLOSURE OF THE INVENTION Phenol derivatives are
Since it works both to promote growth and to inhibit growth of plants, it is necessary to pay sufficient attention to the concentration used. In addition, phenolic resins, plasticizers, pharmaceuticals, agricultural chemicals,
When dyes and the like are used, plants cultivated in institutional horticulture are often directly used for food, so it is necessary to consider safety from the viewpoint of use. Moreover, the relationship with the plant species applied is very subtle. Recent facility gardening is
The high cost of equipment and maintenance costs to the product is a problem, and if a cheap and safe plant growth promoter is obtained, it can be used to accelerate the harvest time of plants and contribute to cost reduction. it can. In addition, it is important to promote plant growth in general plant cultivation. Therefore, it is an object of the present invention to provide an inexpensive and safe plant growth promoter and a method for promoting plant growth using the plant growth promoter.

[0007]

The present invention provides eugenol, β-caryophyllene, geranyl acetate, citronellol, α-pinene, cis-3-hexenol, isoeugenol, linalool, linalool oxide, phenethyl alcohol, benzyl alcohol, birch. A plant growth promoter containing one or more compounds selected from the group consisting of winter bud essential oil component, geraniol and benzyl acetate as an active ingredient, and cultivating a plant under an atmosphere containing the compound. This is a method for promoting plant growth.

[0008] Plants emit some volatile substances when damaged by insects. The volatile substances can be a warning signal to other plants of the same species and can cause the plants to produce substances that inhibit the feeding of pests. Further, it is known that a certain compound exhibits a growth promoting action on a specific plant, but exhibits a growth inhibiting action on another species of plant. Among the transmitters among these plants, growth inhibitory substances have been studied. Mainly, phenolic compounds such as juglone and caffeic acid, alkaloids such as caffeine and lycolicidinol, coumarin derivatives such as bergapten, cineole and borneol as volatile substances. Etc. are known. However, no growth-promoting substance has been identified yet.

In view of this fact that plants exchange information with volatile substances, the present inventors have conducted research and development on plant growth promoters using natural volatile substances in order to solve the above problems. As a result, surprisingly, caryophyllene of the terpene compound, linalool, phenethyl alcohol and the like phenolic compound eugenol, by cultivating the plant in the atmosphere of isoeugenol, with the germination of the seeds, while promoting rooting, It has also been found to promote subsequent growth.

These compounds are all natural products,
It has already been used as a flavoring agent for foods and cosmetics, and its safety has been confirmed. Examples of the plant growth promoter used in the present invention include terpene alcohols (citronellol, linalool, fentyl alcohol, geraniol, etc.), terpene esters (geranyl acetate, linalyl acetate, etc.), terpene hydrocarbons (β-caryophyllene, α
-Pinene, myrcene, etc.), phenols (eugenol, isoeugenol, etc.), aliphatic alcohols (cis-
3-hexenol, decanol, etc.), aliphatic aldehyde (trans-2-hexenal, decanal, etc.), fatty acid (butyric acid, isobutyric acid, valeric acid, isovaleric acid, etc.), other amyl acetate, γ-decalactone, linalool oxide,
Examples thereof include benzyl acetate, benzyl alcohol, phenethyl alcohol, benzaldehyde, piperonal, and birch essential oil components of winter birch.

These show different growth promoting patterns. For example, β-caryophyllene grows roots and stems from low to high concentrations, while benzyl acetate, benzyl alcohol, phenethyl alcohol, trans-2.
-Hexenol, cis-3-hexenol, geranyl acetate showed the highest growth promotion at 0.1 μl / 760 ml, and higher and lower concentrations reduced the growth promotion except geranyl acetate. Further, geranyl acetate has a growth promoting effect on roots at a high concentration.
α-pinene, linalool, geraniol, linalool oxide, piperonal have two maximum growth points,
0.5 μl / 760 ml and 10 μl / 760 ml, 0.1 μl / 7 respectively
60 ml and 1 μl / 760 ml, 0.1 μl / 760 ml and 10 μl /
760 ml, 0.1 μl / 760 ml and 2.5 μl / 760 ml, 0.1
It has maximum growth points at μl / 760 ml and 1 μl / 760 ml.

Isobutyric acid is 1 μl / 760 ml, myrcene is 5 μl / 760 ml, and benzaldehyde is 0.5 μl / 76.
0 ml and amyl acetate have maximum acceleration points at 0.5 μl / 760 ml, respectively. So from these compounds,
The strength of the scent when a person enters the facility, selecting one having an appropriate effect and effect on humans, preferred ones are eugenol, isoeugenol, β-caryophyllene, linalool, linalool oxide, citronellol, It was found to be phenethyl alcohol, geranyl acetate, benzyl acetate, geraniol, birch essential oil components of winter sprout, α-pinene, cis-3-hexenol and benzyl alcohol.

The method of using these compounds may be determined in consideration of the properties of the compound, the scene of use, the purpose of use, etc. Depending on the compound, it can be volatilized as it is, but other solutions, wettable powders, emulsions, etc. It can be used as a powder, a granule, or the like. In actually using the compound of the present invention for promoting the growth of plants, it is possible to change its content in the promoter over a wide concentration range depending on the situation of the target plant, the use scene, or the form of the preparation. As a matter of course, generally, a preferable concentration range is 1 ppb to 100 ppm. Also,
As a method for volatilizing these compounds, a method of volatilizing naturally by simply putting the formulations of respective concentrations in a container and simply placing them in an appropriate place, or a method of flowing in air volatilizing the compound to a constant concentration is adopted. To be done. In the case of the latter method, it is preferable that the air contained in the container is slowly stirred to make it uniform.

Next, there are various kinds of plants targeted by the present invention, for example, rice grown in pallets, tomato grown in greenhouse, eggplant, melon, cucumber, lettuce, spinach, komatsuna and the like. It can also be used for beans, radish radish, barley, mediso, mushrooms, etc. shipped as sprouts.

[0015]

EXAMPLES Next, the present invention will be described in detail with reference to examples. The plant growth test method was carried out by the following method. (1) Container: plastic culture pot, volume 7
60ml (2) Pot culture conditions: 1) 3ml in pot to saturate the humidity in the container
Add sterilized water. 2) Spread 2 blotters on a Petri dish (diameter 90mm) and pour 6ml of sterilized water to put the sample. 3) Add the fragrance component to the container with odor paper (7/140 m
m) and add the ingredients of each stage of the test. 4) The number of cultured individuals per pot is set to 10 and repeated 3 times. (3) Culture conditions: 1) To prepare germination conditions in advance, the specimens were kept at 20 ° C. for 24 hours.
Immerse in sterilized water for hours. 2) Incubate with Phytotron for 72 hours at 20 ° C. (4) Analytical sample: Specimens used for analysis should be within the normal growth rate of those in the control section rather than those with good growth.

Example 1 The growth status of roots and stems of pea seeds was investigated.
As shown in Table 1, linalool, linalool oxide,
Geraniol, cis-3-hexenol, benzyl alcohol, geranyl acetate, benzyl acetate, eugenol,
β-caryophyllene, citronellol, birch essential oil of winter sprout, phenethyl alcohol and α-pinene were added in an amount of 0.05 μl / 760 ml, 0.1 μl / 760 ml, respectively.
5 μl / 760 ml, 1.0 μl / 760 ml, 5.0 μl
/ 760 ml, 10 μl / 760 ml, 50 μl / 76
0 ml, 100 μl / 760 ml and 200 μl / 76
Measured at a concentration of 0 ml, for almost all compounds,
Root and plant height growth was measured. Although the optimum plant height varies depending on the additives, Table 1 shows the growth when various compounds were used at a concentration of 0.1 μl / 760 ml.
Table 2 shows the results of measuring the length and diameter of roots and stems in the presence of each concentration of benzyl acetate, and Table 3 shows the results of measuring the lengths and diameters of roots and stems in the presence of each concentration of geraniol. Show. Furthermore, the growth promotion or inhibition (stem length) of peas in the presence of benzyl alcohol, β-caryophyllene, phenethyl alcohol, geraniol, and eugenol is shown in FIG. 1, linalool, linalool oxide, α-
FIG. 2 shows that pea growth promotion or suppression (stem width) in the presence of pinene, geraniol, and cis-3-hexenol is shown in FIG.
Fig. 3 shows the growth promotion or inhibition of the roots and stems of peas in the presence of each concentration of geraniol, and Fig. 4 shows the growth promotion or inhibition of the roots and stems of peas in the presence of each concentration of benzyl acetate. Shown respectively.

[0017]

[Table 1]

[0018]

[Table 2]

[0019]

[Table 3]

[0020]

[Table 4]

[0021]

[Table 5]

Example 2 When radish and lettuce were tested in the same manner as in Example 1 instead of peas, plant height and root growth of these plants were observed by using the compound of the present invention.

[0023]

Industrial Applicability According to the present invention, there is provided a plant growth promoting agent for accelerating the growth of useful plants for institutional horticulture and the like, and a plant growth promoting method using the promoter.
According to the method of the present invention, production (harvest) of a target plant
Because it can be done quickly, it has a great practical effect.

[Brief description of drawings]

FIG. 1 is a graph showing (stem length) promotion or inhibition of pea growth in the presence of various concentrations of various compounds.

FIG. 2 is a graph showing (stem width) promotion or inhibition of pea growth in the presence of various concentrations of various compounds.

FIG. 3 is a graph showing growth promotion or inhibition of pea roots and stems in the presence of various concentrations of geraniol.

FIG. 4 is a graph showing growth promotion or suppression of root and stem growth of peas in the presence of various concentrations of benzyl acetate.

Claims (3)

[Claims] 1. Eugenol, β-caryophyllene, geranyl acetate, citronellol, α-pinene, cis-3-.
A plant growth promoter containing one or more compounds selected from the group consisting of hexenol, isoeugenol, linalool, linalool oxide, phenethyl alcohol, benzyl alcohol, birch winter essential oil component, geraniol and benzyl acetate as an active ingredient. . 2. A method for promoting plant growth, which comprises cultivating a plant under an atmosphere containing the compound according to claim 1. 3. The vapor concentration of the compound is 1 ppb to 1000 pp.
The method for promoting plant growth according to claim 2, wherein the method is m 2.