JPS6156103A - Germination inhibitor for ear - Google Patents

Abstract

PURPOSE:To germination inhibitor the wheat and barley, etc., having improved germination inhibitory action in ears, having neither toxicity to men and beasts nor phytotoxicity to crops, usable safely, comprising an ester of a saccharide or a sugaralcohol and a specific fatty acid as an active ingredient. CONSTITUTION:A germination inhibitor for ear comprising at least one ester of a monosaccharide such as glucose, etc., a disaccharide such as sucrose, etc., a trisaccharide such as raffinose, etc., or a sugaralcohol of them such as maltioto, etc. and 8-16C, preferably 10-12C fatty acid as an active ingredient. Caprylic acid(8C), pelargonic acid(9C), capric acid(10C), undecanois acid(11C), lauric acid(12C), myristic acid(14C), palmitic acid(16C), etc. may be cited as the fatty acid. In application to wheat, etc., the active ingredient is processed into 10-10,000ppm aqueous solution, and directly applied to ears after heading in an amount to give 10-50l/a. In application period, the inhibitor is sprayed 1- several times usually one month before harvesting.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an ear germination inhibitor for wheat. Specifically, the present invention relates to an ear germination inhibitor for wheat that contains an ester of a sugar or a sugar alcohol and a specific fatty acid as an active ingredient.

[Prior art]

The panicle germination phenomenon occurs when long rains and high temperatures are encountered for 7 hours during the harvesting period, which results in a significant decline in quality as well as a decrease in yield. For this reason, practical tests have been conducted using alpha-naphthalene acetic acid (NAA), maleic acid hydrazide, and the like to prevent ear germination of wheat. However, such products that have been tried so far have had drawbacks such as low ability to prevent panicle germination, or sterility occurs after treatment with chemicals, leading to deterioration in quality after harvesting.

Furthermore, in order to prevent ear germination, chemicals must be sprayed just before harvesting, so special safety considerations are required for edible wheat. None of the agents to date have been fully satisfactory in terms of their effectiveness and safety in preventing panicle germination, and none have been put into practical use as panicle germination inhibitors.

[Problem that the invention seeks to solve]

The object of the present invention is to provide and put to practical use an agent for preventing ear germination of wheat, which has an accurate effect of preventing ear germination and can be safely used without toxicity to humans or livestock or chemical damage to crops.

[Means to solve the problem]

The ear germination inhibitor of the present invention contains at least one ester N' selected from monosaccharides, trisaccharides, trisaccharides, or esters of these sugar alcohols and fatty acids having a carbon number of r to /6.
It is contained as an active ingredient in.

The saccharide and sugar alcohol of the fatty acid ester used in the present invention may be monosaccharides, trisaccharides, trisaccharides, or any of these sugar alcohols.For example, monosaccharides include ribose, glucose, and fructose; Examples of trose, maltose, and trisaccharides include raffinose and gentianose, and examples of -1 sugar alcohols include teha, mannitol, nrubitol, and maltitol. The fatty acid used in the ester of sugar or sugar alcohol with fatty acid has a concentration of g to /o. Specific examples include caprylic acid (carbon number g), pelargonic acid (carbon number 2), capric acid (fii! prime number 10
), undecanoic acid (carbon number //), lauric acid (carbon number 7.2), but among these, especially those with carbon number 10 to
7.2 is preferable. In addition, if the number of carbon atoms is less than r or exceeds carbon number/Jt, a large amount of the chemical must be used to achieve a sufficient effect of preventing panicle germination.
It's not sweet.

The types and varieties of wheat to which the ear germination inhibitor of the present invention can be applied are not particularly limited, and include, for example, wheat (Norin No. 61, Pikari Komugi), file wheat, pearl barley, oat, and rye.

Application of the drug of the present invention to wheat Vi Usually, the above-mentioned sugar or sugar alcohol fatty acid ester is added to the concentration/Opp.
An aqueous solution of m~/0000 ppm is sprayed onto the eared ears in an amount of lO~so t/a. The timing of spraying is arbitrary, but usually 7 months before harvest.
~ It is desirable to spray several times.

In addition, if necessary, the active ingredient of the present invention can be mixed with a solid, each of the 9 glaze carriers, a diluent, a spreading agent, a dispersant, etc. according to the preparation method of general agricultural chemicals, and can be used as a powder or as an irrigation agent. It can be used in formulations such as emulsions, and can be used in combination with fungicides, insecticides, plant regulators, various fertilizers, etc., if necessary.

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

Test example: Wheat (variety Norin 6) growing in the field was
Seven days before and seven days before harvesting the sugars or sugars from the various fat levels listed in the table, they were uniformly spread over the entire barrel. Then, the entire Otaru was harvested and a germination test was conducted in a petri dish using the following conventional method. That is, place a filter paper on a petri dish, moisten it thoroughly with water, place 9 pieces of wheat on top of it, and then cover it with a moist filter paper to maintain a small amount of humidity.
After being left in the dark for 10 days, the germination rate (%) was investigated and the results are shown in Table 1. In addition, this test was conducted with 3 shears per 7 plots, and the average germination rate was determined.

Comparative Example A germination test was conducted using sucrose stearate in the same manner as in the test example, and the germination rate was 0%.

Table 1: Hong Testing (701st session) [Effects of the Invention] As is clear from the above test examples, sufficient prevention of panicle germination can be achieved by treatment with the agent of the present invention.

Sender: Mitsubishi Chemical Industries, Ltd. Representative Patent Attorney Hase - (7 others)

Claims (1)

[Claims] (1) Wheat products containing as an active ingredient at least one ester selected from monosaccharides, disaccharides, trisaccharides, or esters of these sugar alcohols and fatty acids having 8 to 16 carbon atoms. panicle germination inhibitor