Studies On Application And The Engenderance Of Variatied Strain Of Streptomyces Cinereohygroscopicus D-2 With Inhibition Magnaporthe Grisea

Magnaporth grisea, Rhizocotonia.sonali and Xanthomonascampestrispv. oryzae were the three severest diseases in rice. Furthermore, Magnaporth grisea lied in the head of the three severe diseases. Its physiological little strains variabile, heredity and variance rapidness and type showed variability, which included burl plague, fringe neck plague and leaf plague, etc. Magnaporth grisea zyme often lived through the winter in the seed and rice haulm. After reaping rice in former season, if remnants seed and rice haulm could not be eliminated in time, there would provide an area to Magnaporth grisea zyme to live through the winter, which led in it prevailed in large areas in the coming year. Impersonally, Magnaporth grisea zyme probable had been prevailing when the latent period of rice blast making its symptom could be identified in the field. So all of them brought in infinite difficulties to prevention and care jobs. Each year, rice blast almostly brought in severe damnify to rice production in the world, even reaped few grain. Traditional prevention and cure rice blast often used chemical pesticides, but the problem of which polluted in environment becoming severer and severer. In recent years, with research to rice blast resisted pesticide and more and more attention to environment protection, persisted-developed became an austerity problem that human had to face. Many people attached great importance to biological pesticide extensively for its virtues such as high effect, low pollution, function selectively, low rudimentationen even no rudimentationen. Agricultural antibiotic was a big segment in biological pesticide, while hyporawness metabolized offspring that was produced by Streptomyces was possessed of weightily status in agricultural antibiotic. Moreover, many hyporawness metabolized offsprings that came from Streptomyces had been manufactured agricultural antibiotic and energetically generalized on yield, such as validamycin, kasugamycin, zhongshengmycin etc, which gained great effect in plant diseases and insect pests prevention and cure aspect and recognition in great master. Studies aimed to rice blast that was a disease in the world and harmed rice production heavily, then based on the former Streptomyces cinereohygroscopicus individual plant, getting across the method of induction breeding and filtering variated individual plant which had better prevention and cure effect than originalitial individual plant. Carrying through farm test, correlating biological vivid character mensuration research and observing variated individual plant produced irregular effect to rice blast hypha getting across cytology instrument etc. The results as follows:1) Applying to physical induction method, chemical induction method and compound induction method inducted Streptomyces cinereohygroscopicus originalitial individual...