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对新疆主要植棉区的 30个棉花黄萎病菌菌株及陕西省农科院植保所赠送的 4个标准菌株进行致病性分化和营养亲和性研究。结果表明 ,新疆棉花黄萎病菌致病性分化明显 ,可分为强、中、弱3种类型 ,34个菌株中的 32个菌株可分为 2个亲合群 ,另外两个菌株暂未划定亲合群
Thirty cotton Verticillium dahliae isolates from four major cotton-growing areas in Xinjiang and four standard strains donated by the plant protection institute of Shaanxi Academy of Agricultural Sciences were studied for pathogenicity differentiation and nutrient affinity. The results showed that the pathogenicity of Verticillium dahliae in Xinjiang was obvious, which could be divided into three types: strong, moderate and weak. 32 of the 34 strains could be divided into two affinity groups and the other two strains were not yet defined Affinity group