为明确福建省番茄晚疫病菌生理小种组成结构，利用5个鉴别寄主对2014年分离自福建省的78株番茄晚疫病菌的生理小种进行测定。研究结果表明，供试的番茄晚疫病菌由 T1、 T1，2、T1，5、 T1，3，4、 T1，2，5、 T1，2，3，4和T1，2，3，4，5共7个小种组成，其中T1，2地理分布最广，出现频率最高，占鉴定总数的28.20％，为福建省番茄晚疫病菌优势小种，毒力频率分析显示，对5个抗番茄晚疫病基因 Ph‐1、 Ph‐2、 Ph‐3、 Ph‐4和 Ph‐5有毒力的毒性基因出现频率依次为100％、64.1％、35.09％、35.09％和26.92％，表明 Ph‐1和 Ph‐2在福建省已丧失抗性。%Thephysiologicalracesof Phytophthorainfestansisolatedin2014fromtomatoesinFujianwerestudied. Seven physiological races from the 78 isolates were identified in 5 hosts .Among them ,T1 ,2 was the most widely distributed and predominant in the province with an appearance frequency of 28.20% .The occurrence frequency of the virulent genes resistant to Ph‐1 , Ph‐2 , Ph‐3 , Ph‐4 and Ph‐5 were 100% ,64.1% ,35.09% ,35.09% and 26.92% ,respectively .It appeared that the tomato cultivars carrying Ph‐1 and Ph‐2 genes had become susceptible to the prevalent races of P .infestans in Fujian .
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