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Acta Phytopathologica Sinica
2003,33
(1)
30-34
银杏疫病病原种的鉴定
作 者：
周志权;廖咏梅;林敏敏
单 位：
广西大学农学院;广西科学院生物研究所
关键词：
银杏疫病;病原鉴定;烟草疫霉
摘 要：
从引起银杏疫病的病原疫霉菌株中 ,选取 2个代表菌株进行分类鉴定。根据病原菌形态特征、生理特性、寄主范围和菌体可溶性蛋白质电泳测定等 ,认为引起银杏疫病的病原疫霉为烟草疫霉 (PhytophthoranicotianaeBredadeHann)。该病原菌寄主范围较广 ,生长温度大于 35℃ ,异宗配合 ,自然条件下桂北银杏产区不能产生卵孢子 ,但在低温等不良环境下形成大量厚垣孢子。注意这些特性 ,对有效开展病害防治有十分重要的意义。
译 名：
Identification of Phytophthora species causing gingko wilt
作 者：
ZHOU Zhi-quan 1,LIAO Yong-mei 2, LIN Min-min 2 ( 1 Institute of Biology, Guangxi Academy of Sciences,Nanning 530003, China; 2 Agricultural College, Guangxi University, Nanning 530005,China)
关键词：
gingko wilt; pathogen identification; Phytophthora nicotianae
摘 要：
Two typical Phytophthora strains which cause gingko wilt were chosen for taxonomic and identification experiment. According to morphological characteristics, physiological properties, host range and soluble protein electrophoresis, the pathogen was identified as P. nicotianae Breda de Hann. The pathogen has wide host range and its growth temperature is higher than 35℃. It is heterothallic and can not produce oospores in natural gingko growing region in the north of Guangxi. But it can produce a large number of chlamydospores in adverse environments such as low temperature. This cha- racteristics has an important significance to develop an effective method for controlling the disease.
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