JPS6191106A - Plant growth regulator for potatoes - Google Patents

Abstract

PURPOSE:The titled plant growth regulator for potato, etc., capable of carrying out efficiently photosynthesis of plant, and showing increasing effects on yield of potatoes by application, containing a specific compound as an active ingredient. CONSTITUTION:A plant growth regulator containing one or more of a compound shown by the formula I (R<1> is H, CH3, C2H5, formula II, or formula III; R<2> is H, CH3, CH2=CH, or formula IV; X is CN, COOH, COOCH3, COOC2H5, or CONH2), preferably N-allylglycine, vinylglycine, and its salt, etc. The compound shown by the formula I, for example, is obtained by adding cooled allylamine to dehydrated ether, adding bromoacetic acid ethyl ester to it to give N-allylglycine ethyl ester. It is dropped in KOH in ethanol at room temperature to give N-allylglycine K salt. It is prepared into formulation such as powder, aqueous suspension, etc., and its aqueous solution is applied to vegetative parts of potatoes before or after flowering.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a novel tuber growth regulator.

More specifically, the general formula is R' -NH-CH-X (wherein R1 is It, C11+, Czlls, C1
1:+C1l・CIICIIZ.

or Cl1z=CIIC)lz, R2 is II, CH
3, Ctlz=CH, or C) lzcll=cll,
X is CN, C0OH, C00CHi, 000C2H
The present invention relates to a growth regulator for potatoes, characterized in that it contains at least one or two or more compounds selected from the group consisting of the compounds represented by the following formulas (representing 5 or C0NI12) and salts thereof:

[Prior art]

Conventionally, it has been known that immersing sweet potato seedlings in a dilute solution of choline chloride as a growth regulator for sweet potatoes and other tubers significantly promotes rooting. On the other hand, the present inventors discovered that the compound represented by the above general formula efficiently performs photosynthetic action on 03 plants, and filed a patent application. After that, the present inventors conducted a specific field test on potatoes, and found that the above-mentioned compound attached to potatoes had a yield increasing effect, and they were unable to complete the present invention.

[Problem to be solved by the invention 3 Humans and other animals survive by using various organic substances produced by plants as food. Plants use sunlight energy in the chloroplasts in their leaves to extract tJ! from carbon dioxide in the air and water from the soil. I am making a kind. This process is called photosynthesis or carbon dioxide assimilation.

Sugars produced through photosynthesis are transported to various parts of the plant through leaf veins and phloem tubes, where they are transformed into complex organic substances such as carbohydrates, proteins, and fats. These organic substances are used for the maintenance of the plant's own life such as maintenance of plant tissues and respiration, and are stored in seeds, fruits, stems, roots, etc. Humankind has made extensive research efforts into how to increase the storage capacity of plants. For example, efforts are being made to increase the yield index through breeding.

The present inventors have been conducting research for many years on methods for improving crop yields by efficiently performing photosynthesis itself using drugs. As a result, we discovered that at least one or more compounds represented by the general formula shown above can efficiently carry out photosynthesis in plants, and we also conducted specific field tests on potatoes. As a result, the present invention was completed by discovering that the above-mentioned compound is effective in increasing the yield of potatoes.

[Means to solve the problem]

Examples of the compound represented by the general formula that is an active ingredient in the present invention include compounds represented by the following substituents as R', R'', or X.

R'R''X Cl1□= C11CII□ )I
CNC1h==CIICIh HC00Cd
lsC1lz-CIICII□ 11
C00KCIl□= CII CII□ CIl
, CNCl1z-CIICII□ C1
13C00C2H5CIl□=Cl1CIIz
C1h to CH3COO; CHCHz CL
C0NH2C2II S
l Summer CN, C113
C1l=CIIC1h HC00C2H5CI
I x CII = CII CII □
II CNIf C
Hz=CHC00HIf C113C)l=
cHC00I+ Among these compounds, preferred compounds are N-allylglycine or vinylglycine, etc.
A particularly preferred compound is N-allylglycine.

Examples of N-allylglycine or its salt and its lower alcohol include the following compounds.

(1) N-allylglycine, (2) N-allylglycine hydrochloride, (3) N-allylglycine sodium salt, (4) N-allylglycine 11 salt, (5) N-allylglycine choline salt, (6) N-allylglycine ethyl ester and these compounds as active ingredients can be produced, for example, by the following method.

Production Example 1゜Synthesis of N-allylglycine ethyl ester 27! A mechanical stirrer, a cooling tube, a dropping funnel, and a thermocouple were attached to a three-bottle flask, and sufficiently dehydrated ether (700 ml) was added thereto and ice-cooled, and the system was kept in a nitrogen atmosphere. When the inside of the system has cooled down sufficiently, allylamine (1
66 g, 2.9 mol) was added and stirring was continued for a while. Next, bromoacetic acid ethyl ester (230 g
, 1.4 mol) was added slowly. The reaction is exothermic, and if the dropwise addition is rapid, the ether will reflux violently, so care must be taken. A white slurry will be generated during the dripping process.

After the dropwise addition was completed, the temperature was maintained and the mixture was stirred for 3 hours.

At the end of the reaction, the slurry was filtered to remove the solvent, and N-allylglycine ethyl ester 1 was distilled under reduced pressure.
5g (yield: 80x) was obtained. The boiling point of this substance is 79-80
℃ (14-15 mmHg).

Production Example 2゜Synthesis of N-allylglycine potassium salt 500ml of ethanol was placed in a 3I separable flask.
and add 62 g (1.15 mol) of potassium hydroxide to it.
was added and completely dissolved. After dissolving KO)l, add N-allylglycine ethyl ester 1651 using a dropping funnel.
7 (1.15 mol) was added dropwise at room temperature. A white slurry was produced during the dropwise addition. After the completion of the dropwise addition, the slurry was refluxed for 1 hour to completely dissolve the produced slurry. - When the device was used at night, a white solid was produced, which was filtered with suction.
The obtained crystals were thoroughly washed with ethanol and then dried under reduced pressure to obtain 150 g of white crystals, with a yield of 80x.

The active ingredient of the present invention may be powder, aqueous or oily.
It is formulated and used in a conventional dosage form such as a liquid.

Examples of formulations of the agent of the present invention are shown below.

Formulation example.

50 g of the salt N-glycine was dissolved in about 100 ml of pure water, and concentrated hydrochloric acid was added thereto to adjust the pH to 7.0. Next, as a surfactant, 10 g of polyoxyethylene oleyl ether, lauryl sulfate triethanolamine Lo
g, add pure water to make a total of 250 g, and add N-
A formulation containing 20% allylglycine as salt was obtained. This is usually used after being diluted 100 to 400 times.

The amount of the agent of the present invention obtained as described above varies depending on the type of tuber, growth stage, method of use, time of use, etc., but if it is sweet-bitter in terms of -C, the foliage should be used 1 to 2 months after transplanting the seedlings. Spray the aqueous solution on the area.

For potatoes, apply an aqueous solution to the stems and leaves of the potato before and after flowering.
IS1. to clothe In this case, the amount used is l as the active ingredient.
0.05 to 4 kg per ha, preferably 0.1 to 4 kg
Spray 2 kg as an aqueous solution.

The agent of the present invention can also be used in combination with liquid fertilizer, insecticide, and fungicide. It is preferable to spray an aqueous solution containing a surfactant in order to make it easier for the chemicals to adhere to and penetrate the crops.

In addition, as a result of confirming the amount of photosynthesis using proloblasts of wheat using the agent of the present invention, it was found that the amount of photosynthesis increased by 20-3% by treatment with 10-20mM allylglycine.
It was confirmed that the increase was 0%.

〔Example〕

Next, the present invention will be explained in more detail using test examples.

Test Example 1゜ Potatoes (Waseshiro) at the peak of flowering, which had grown for two months after being planted in the field, were treated with various concentrations of the present invention agent in which a surfactant was added.
It was sprayed at a rate of 2000 #/a.

The seeds were harvested every 1.5 months after spraying, and the weight of the potatoes and the number of potatoes weighing 20 g or more were measured. The test results are shown in Table 1.

Table 1 Test Example 2゜Sweet and bitter (Japanese sardines) were planted in the field and grew for one month.
1 per ha of the present invention agent at each concentration with a surfactant added to
It was sprayed at a rate of 0.0001. Two months after the spraying, sweet and bitter plants were harvested, and the weight of 30 g or more was measured. Table 2 shows the test results.

Table 2

Claims (1)

[Claims] The general formula includes ▲ mathematical formulas, chemical formulas, tables, etc. ▼ (However, in the formula, R^1 is H, CH_3, C_2H_5,
CH_3CH=CHCH_2, or CH_2=CHC
H_2, R^2 is H, CH_3, CH_2=CH, or CH_3CH=CH, X is CN, COOH, COOC
A growth regulator for potatoes characterized by containing at least one or two or more compounds selected from the group consisting of compounds represented by H_3, COOC_2H_5 or CONH_2) and salts thereof