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期 刊 ：植物保护学报 2003年

关键词：大豆疫霉根腐病菌；毒性；生理小种；鉴定；抗病育种；病原菌；

Keywords:Phytophthora sojae, physiological race, virulence,

摘 要 ：对采自黑龙江省、吉林省的42株大豆疫霉根腐病茵进行生理小种鉴定，其中11株可被分别鉴定为1号、3号和8号生理小种。1号小种为优势小种，3号、8号小种为国内首次报道。其余31株在鉴别寄主上出现中间类型反应无法鉴定小种，但可以划分为12个毒性类型，病原茵群体具有很高的毒性多态性，其中有些菌株毒性较强。

Abstract:42 isolates of P. sojae obtained from Heilongjiang Province and Jilin Province were identified for their physiological races. 11 isolates were classified into 3 races - races 1, 3 and 8. Race 1 was the relatively prevalent race, and races 3 and 8 were ide

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