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1982—1985年,对江苏省83个棉花黄萎病菌(Verticillium dahliae Kleb.)菌株进行了致病力的测定,其中致病力强的落叶型菌株13个,占测定菌株数的15.7％,主要分布在南通县恒兴乡和常熟市徐市乡、董浜乡;致病力中等的叶枯型菌株45个、致病力弱的黄斑型菌株25个,分别占测定菌株数的54.2％和30.1％,这两类菌株广泛分布江苏省各主要产棉区。试验表明棉花抗病品种“4278”是一个比较理想的鉴别寄主,对3种致病力类型的菌株的鉴别力都比较强。无论从棉花上或者从其它植物上都可以得到对棉花致病力不同的菌株,只是各类型菌株所占的比例有所不同。
From 1982 to 1985, the pathogenicity of 83 strains of Verticillium dahliae Kleb. In Jiangsu Province were determined. Among them, 13 were pathogenic deciduous strains, accounting for 15.7% of the total number of tested strains, mainly They were distributed in Hengxing Township of Nantong County and Xuxiang Township and Donghaixiang Township of Changshu City. There were 45 pathogenic leaf blight strains and 25 pathogenic weak yellow spot strains, accounting for 54.2% of the total number of tested strains and 30.1%, these two strains are widely distributed in Jiangsu Province, the major cotton producing areas. The results showed that the cotton variety “4278” was an ideal host for identification and the discriminating power of the three strains of pathogenicity was relatively high. In both cotton and other plants can be obtained on the pathogenicity of different strains of cotton, but the proportion of each type of strain is different.