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在形态学、生理学和酯酶同工酶诸方面比较了苜蓿黄萎病菌即黄萎轮枝孢Ｖｅｒｔｉｃｉｌｉｕｍａｌｂｏ－ａｔｒｕｍ苜蓿菌系与Ｖ．ｄａｈｌｉａｅ、Ｖ．ｎｉｇｒｅｓｃｅｎｓ、Ｖ．ｎｕｂｉｌｕｍ和Ｖ．ｔｒｉｃｏｒｐｕｓ等近似种的异同。结果表明，上述菌种无性态形态特征和酯酶同工酶谱带明显不同，生长的适宜温度与ｐＨ值范围也有差异。菌丝休眠体的形态是区分各近似种的重要形态鉴别特征，酯酶同工酶电泳图谱可作为辅助鉴别特征。在鉴别其中最重要的两个种即Ｖ．ａｌｂｏ－ａｔｒｕｍ和Ｖ．ｄａｈｌｉａｅ时，对高温（３０℃）和低ｐＨ值的耐受性也可作为参考指标。酯酶同工酶电泳有可能成为快速鉴定苜蓿黄萎病菌的新方法。
In terms of morphology, physiology and esterase isoenzyme, Verticillium wilt Verticiliumalbo-atrum and V. verticilli wilt pathogens were compared. dahliae, v. nigrescens, V. nubilum and V. Similarities and differences between tricorpus and other similar species. The results showed that the morphological characteristics and esterase isozymes of the above strains were significantly different, the appropriate temperature for growth and pH range are also different. Mycelium dormant body morphology is to distinguish the important morphological characteristics of the identification of similar species, esterase isozyme electrophoresis map can be used as auxiliary identification features. In identifying the two most important species that V. albo-atrum and V. dahliae, tolerance to high temperature (30 ° C) and low pH can also be used as a reference. Esterase isozyme electrophoresis may become a new method for the rapid identification of Verticillium dahliae.