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本试验初步明确水稻白叶枯病黄叶型症状的发生与病原菌的致病力以及水稻品种的感病性有密切的关系。相关系数均达到极显著水准。凡致病力强的菌株(Ⅳ、Ⅴ群)侵染感病的品种,一般都容易发生黄叶型症状,而致病力中和弱的菌株(Ⅲ、Ⅱ、Ⅰ群)浸染感病的品种,或致病力强的菌株浸染抗病的品种,都不会发生黄叶型症状。
The experiment initially clarified that the occurrence of yellow leaf symptoms of bacterial leaf blight was closely related to the pathogenicity of pathogenic bacteria and the susceptibility of rice varieties. Correlation coefficients reached a significant level. All virulent strains (Ⅳ, Ⅴ group) susceptible to susceptible varieties are generally prone to yellow leaf-type symptoms, and weak pathogenicity and weak strains (Ⅲ, Ⅱ, Ⅰ group) infected with susceptible Varieties, or strong pathogenic strains dip resistant varieties, will not occur yellow leaf-type symptoms.