Hyperparasitic fungus separation, identification and fungicide for preventing and treating puccinia striiformis

Abstract

The invention belongs to the technical field of agricultural biological prevention and treatment and microbial preparation, and discloses hyperparasitic fungus separation, identification and fungicide for preventing and treating puccinia striiformis. According to the invention, a hyperparasitic strain used for identification is a bacterial system found under natural conditions; the hyperparasitic bacteria are separated from white parasitic bacteria and tawny parasitic bacteria on the surface of the puccinia striiformis; infection and harm of the puccinia striiformis to wheat plants can be effectively inhibited; the generation and activity of the puccinia striiformis are also reduced by the isolate; the invention has a very high application value in production; the parasitic bacteria can significantly inhibit the growth and development of the puccinia striiformis and the generation of spores; and furthermore, the culture mode of the hyperparasitic bacteria is simple and easy to operate, so that the hyperparasitic bacteria are of a potential novel bacterial system, which can be widely applied to prevention and treatment of the puccinia striiformis.

Description

technical field [0001] The invention belongs to the technical field of agricultural biological control and microbial biological preparations, and in particular relates to a hyperparasitic fungus for preventing and treating wheat stripe rust, an isolation and identification method, and a bacterial preparation. Background technique [0002] At present, the closest prior art: wheat stripe rust is a major disease that harms global wheat production areas caused by Puccinia striiformis f.sp. Tritici, Pst, and wheat stripe rust is a A low-temperature airborne disease that can harm the entire growth cycle of wheat. The control of wheat stripe rust mainly depends on the use of chemical pesticides, but excessive reliance on chemical pesticides is at the cost of sacrificing the environment. [0003] In summary, the problems in the prior art are: [0004] (1) The creation speed of disease-resistant varieties is limited, and the utilization rate of disease-resistant varieties is reduce...

AI Technical Summary

Problems solved by technology

[0004] (1) The creation speed of disease-resistant varieties is limited, and the utilization rate of disease-resistant varieties is reduced

[0005] (2) Excessive use of chemical pesticides seriously affects the safety of food production in my country

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