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大豆疫霉病是我国的重要对外检疫对象之一,而我国东北又是大豆的原产地,按照植物病理学中寄主与病原菌在原产地长期共存共同进化的基本理论,在我国东北极有可能有大豆疫霉菌的存在,只是因为分离技术及生态等方面的原因,较长时期内一直未能分离到这一病菌。我们自1985年以来,应用改进后的选择性培养基,经多次到东北大豆产区采样分离,于1989年在病大豆根部经采样分离及纯化而获得的菌株
Phytophthora sojae is one of the important external quarantine objects in our country, and the northeast of our country is the origin of soybean. According to the basic theory of coexistence and evolution of hosts and pathogenic bacteria in the origin of plant pathology in the pathogenesis of northeast China, The existence of Phytophthora sojae, only because of the separation technology and ecological reasons, has not been able to isolate the bacteria over a long period of time. Since 1985, we have improved the selective medium, after repeated sampling and separation to the northeastern soybean producing areas, in 1989 the soybean root samples were isolated and purified strains obtained