Uses of compound (RS)-5-ethyl-2-(4-isopropyl-4-methyl-5-oxo-2-glyoxalidine-2-yl)nicotinic acid and aminium salt thereof as plant chemical hybridizing agent

Abstract

The invention discloses application of a known compound (RS)-5-ethyl-2-(4-isopropyl-4-methyl-5-oxo-2-imidazoline-2-yl) nicotinic acid and ammonium salt thereof used as phytochemistry hybridizing agents, wherein the compound (RS)-5-ethyl-2-(4-isopropyl-4-methyl-5-oxo-2-imidazoline-2-yl) nicotinic acid and the ammonium salt thereof are prepared into dosage forms such as a liquid preparation, a dry suspending agent, a water dispersible granule, emulsifiable solution, wettable powder or other suitable agricultural dosage forms which are diluted to prepare an aqueous solution for spraying leaf surfaces before use; and the dosage of effective active ingredients of the compounds is between 1 and 15 grams per hectare. Experiments prove that the two compounds can be used as highly-efficient, low-cost and low-toxicity chemical hybridizing agents for gramineae and brassica plants.

Description

technical field [0001] The present invention relates to the use of a compound, in particular a known compound (RS)-5-ethyl-2-(4-isopropyl-4-methyl-5-oxo-2-imidazoline- 2-yl) nicotinic acid and its ammonium salt for use in phytochemical hybridization agents. Background technique [0002] There are different degrees of heterosis between varieties in many crops such as wheat, rice, paddy rice, Brassica rape, Chinese cabbage, and cabbage. The application of certain chemical substances (chemical hybridization agents, andricides) can retard the development of plant pollen and inhibit self-pollination, thereby leading to cross-pollination and obtaining plant hybrids. This chemical drug-induced male sterility (chemical andricide) is one of the feasible ways to utilize crop heterosis. The advantages of chemical male killing are obvious. It overcomes the dependence of the sterile line on the genotype, expands the application range of heterosis, and reduces the cumbersome procedures ...

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Problems solved by technology

[0005] (3) The amount of usage is flexible;

In rice, methyl arsinate "andricide No. 1" was tested in China, but it could not continue to be used due to environmental pollution and malecidal effects.

There are few chemical hybridization agents with better effects in Brassica, and the cost of gibberellin is too high. However, the andricide No. 1 and No. 2 (methyl arsenate) used in my country in the past contain arsenic. , There are residues in plants, which may cause environmental pollution, and it is even more unsuitable to use on vegetables

For example, in rapeseed hybrid seed production, it generally needs to be sprayed several times at intervals to ensure sterility throughout the flowering period, the phytotoxicity is relatively heavy, and the seed production yield is low

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