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首次从大花菟丝子感病藤茎上分离到半裸镰孢、腐皮镰孢、细交链孢和茶褐斑拟盘多毛孢等４种病原真菌。室内致病性试验结果表明这４种真菌均能使日本菟丝子和大花菟丝子感病而死，致病力由强到弱的顺序是：腐皮镰孢、半裸镰孢、茶褐斑拟盘多毛孢和细交链孢。
For the first time, four pathogenic fungi such as Fusarium solani, Fusarium solani, Alternaria alternata, and Coprinus comatus were isolated from the corydalis. The results of indoor pathogenicity test showed that all the four kinds of fungi could cause the Japanese dodder and the big dodder to be susceptible to death. The order of pathogenicity from strong to weak was Fusarium solani, Fusarium solani, Polymyxa and Alternaria alternata.