阅读说明：本技术 冠菌素在诱导农作物幼苗防御斜纹夜蛾中的应用 (Application of coronatine in inducing crop seedlings to defend prodenia litura ) 是由 何其明 任丹 荣波 王艳玲 李玉珠 何洁 黄梅 杜波 杨艳芹 万琼 于 2019-11-04 设计创作，主要内容包括：本发明涉及冠菌素在诱导农作物幼苗防御斜纹夜蛾中的应用,属于农作物病虫害绿色防控技术领域。本发明解决的技术问题是提供一种冠菌素的新用途,即冠菌素在诱导农作物幼苗防御斜纹夜蛾中的应用。本发明冠菌素可以诱导农作物幼苗防御,从而抑制或延缓寄居在该农作物上的斜纹夜蛾幼虫的生长发育,其用量少,效果好,环境污染小,为斜纹夜蛾的绿色防控提供了新的选择。(The invention relates to application of coronatine in inducing crop seedlings to defend prodenia litura, and belongs to the technical field of green prevention and control of crop diseases and insect pests. The invention aims to provide a new application of coronatine, namely an application of coronatine in inducing crop seedlings to defend prodenia litura. The coronatine can induce crop seedling defense, so that the growth and development of spodoptera litura larvae inhabiting on crops are inhibited or delayed, the dosage is small, the effect is good, the environmental pollution is small, and a new choice is provided for green prevention and control of spodoptera litura.)

1. Application of coronatine in inducing crop seedling to defend prodenia litura.

2. Use of coronatine according to claim 1 for inducing crop seedlings to defend against prodenia litura, characterized in that: the crops are pakchoi, cucumber, lettuce, asparagus lettuce, cotton or tobacco.

3. Use of coronatine according to claim 1 for inducing crop seedlings to defend against prodenia litura, characterized in that: spraying coronatine on the leaf surface of crops.

4. Use of coronatine according to claim 3 for inducing crop seedlings to defend against prodenia litura, characterized in that: the spraying concentration of coronatine is 0.001-1 ppm.

5. The application of coronatine in preparing an inducer is characterized in that: the resistance inducer can induce crop seedling defense, so as to inhibit the growth and development of spodoptera litura larvae inhabiting the crops.

6. Use of coronatine according to claim 5 for the preparation of a decoy agent characterized in that: the resistance inducer also comprises a carrier acceptable in pesticide formulation processing.

7. Use of coronatine according to claim 5 or 6 for the preparation of a decoy agent characterized in that: the crops are pakchoi, cucumber, lettuce, asparagus lettuce, cotton or tobacco.

8. A method for preventing and controlling crop prodenia litura is characterized by comprising the following steps: when the seedlings of the crops are planted, 0.001-1ppm coronatine aqueous solution is sprayed on the leaf surfaces of the crops.

9. The method for controlling crop prodenia litura according to claim 8, wherein: the crops are pakchoi, cucumber, lettuce, asparagus lettuce, cotton or tobacco.

Technical Field

The invention relates to application of coronatine in inducing crop seedlings to defend prodenia litura, and belongs to the technical field of green prevention and control of crop diseases and insect pests.

Background

The green prevention and control of crop diseases and insect pests is an effective way for promoting the safe production of crops, reducing the use amount of chemical pesticides, adopting environment-friendly measures such as ecological control, biological control, physical control and scientific medication to control the effective behavior of pests, implementing the green prevention and control is a major measure for implementing public plant protection and green plant protection, developing modern agriculture, constructing 'resource saving and environment-friendly' two types of agriculture, and promoting the safety of agricultural production, the quality safety of agricultural products, the agricultural ecological safety and the agricultural trade safety.

Spodoptera litura (Fabricius) is a species of Spodoptera of Lepidoptera, Spodoptera litura, is a crop pest, is brown, has many patches on the front wing, and is named because of the gray and wide twill. The prodenia litura is mainly harmed by larvae, the larvae are edible and are mixed, the food consumption is large, the larvae which are hatched just before are harmed by leaf backs, the leafy flesh is eaten, and only the epidermis is left; after 3-year larvae, the leaves are incised, incomplete and even completely eaten, and the silkworms eat buds to cause defects and easily burst into disasters. At present, the method for preventing and controlling prodenia litura comprises the steps of preventing and controlling by using medicaments, such as spraying imidacloprid, dichlorvos and the like before 3 instars of larvae; trapping and killing adults or utilizing natural enemies of adults such as ladybug and spider for catching and killing.

Coronatine (COR) is a novel plant growth regulating substance formed by coupling a coronaric acid (CMA) containing an amino acid and coronaric acid (CFA) having a polyketone structure by an amide bond. The compound can effectively promote the biosynthesis of plant secondary metabolites, improve the stress resistance of plants, such as drought resistance of corn, peanut, banana and winter wheat during overwintering, cold resistance of wheat and cucumber, salt tolerance of cotton and the like, increase the yield of taxol, soybean flavonoid and the like, improve tobacco quality, have a paddy field weed control effect, and can soak seeds to cultivate strong rice seedlings and promote corn seed germination and the like by using low-concentration coronatine.

Disclosure of Invention

The invention aims to provide a new application of coronatine, namely an application of coronatine in inducing crop seedlings to defend prodenia litura.

Preferably, the crops are pakchoi, cucumber, lettuce, asparagus lettuce, cotton or tobacco.

Preferably, the coronatine is sprayed on the foliage of crops.

Preferably, the spraying concentration of the coronatine is 0.001-1 ppm.

The second technical problem solved by the invention is to provide another new application of coronatine, namely the application of coronatine in preparing resistance inducer.

The coronatine can be applied to the preparation of resistance inducer, and the resistance inducer can induce the defense of crop seedlings, thereby inhibiting the growth and development of spodoptera litura larvae inhabiting the crops.

Preferably, the resistance inducer also comprises a carrier acceptable in pesticide formulation processing.

Preferably, the crops are pakchoi, cucumber, lettuce, asparagus lettuce, cotton or tobacco.

The invention also provides a method for preventing and controlling the prodenia litura of crops.

According to the method for preventing and treating the spodoptera litura of the crops, the coronatine aqueous solution with the concentration of 0.001-1ppm is sprayed on the leaf surfaces of the crops when the seedlings of the crops are planted.

Preferably, the crops are pakchoi, cucumber, lettuce, asparagus lettuce, cotton or tobacco.

Compared with the prior art, the invention has the following beneficial effects:

the method utilizes coronatine to delay the growth and development of spodoptera litura larvae, has the advantages of low consumption, good effect and low environmental pollution, and provides a new choice for green prevention and control of spodoptera litura.

Detailed Description

The invention relates to a new application of coronatine, in particular to an application of coronatine in inducing crop seedlings to defend prodenia litura.

Researches show that the coronatine can induce crop seedling defense, so that the growth and development of spodoptera litura larvae inhabiting the crops are inhibited.

Plant-induced defenses can alter the behavior of herbivores and their natural enemies, and application of exogenous compounds (elicitors) can induce plants to produce this defense response. The inventor finds that the application of coronatine on crops can induce the crop seedlings to generate defense reaction, so that the growth and development of spodoptera litura larvae on the crops are slow, and the aim of preventing and treating the spodoptera litura is fulfilled.

Preferably, the crops are pakchoi, cucumber, lettuce, asparagus lettuce, cotton or tobacco.

Preferably, the coronatine is sprayed on the leaf surfaces of crops, can induce crop defense and inhibit the growth and development of spodoptera litura larvae.

Preferably, the spraying concentration of the coronatine is 0.001-1 ppm.

The method for applying coronatine of the present invention can adopt the conventional application method of pesticides in the field, for example, spraying coronatine solution to the leaf surface of crops, and the leaf surface is fully moistened without dripping water.

The invention provides another new application of coronatine, namely the application of coronatine in preparing an inducer.

The coronatine can be applied to the preparation of resistance inducer, and the resistance inducer can induce the defense of crop seedlings, thereby inhibiting the growth and development of spodoptera litura larvae inhabiting the crops.

Preferably, the resistance inducer also comprises a carrier acceptable in pesticide formulation processing.

The resistance inducer can be prepared into various common dosage forms according to the conventional production method in the field of pesticide formulation processing. For example, coronatine is mixed with one or more carriers, and prepared into aqueous solution, powder, granules and other dosage forms as required.

The carriers acceptable in the processing of pesticide dosage forms refer to carriers acceptable in the field when the pesticide dosage forms are prepared, and the carriers can be configured with coronatine to be conveniently applied to sites to be treated, or can be added into the carriers to be conveniently stored, transported or operated. The carrier may be a pesticide carrier conventional in the field of pesticide formulation processing, for example, a dispersant, wetting agent, binder, emulsifier, and the like.

Preferably, the crops are pakchoi, cucumber, lettuce, asparagus lettuce, cotton or tobacco.

The invention also provides a method for preventing and controlling the prodenia litura of crops.

According to the method for preventing and treating the spodoptera litura of the crops, the coronatine aqueous solution with the concentration of 0.001-1ppm is sprayed on the leaf surfaces of the crops when the seedlings of the crops are planted.

Preferably, the crops are pakchoi, cucumber, lettuce, asparagus lettuce, cotton or tobacco.

The following examples are provided to further illustrate the embodiments of the present invention and are not intended to limit the scope of the present invention.