中国不同地区不同寄主的松针褐斑病菌菌株比较

COMPARATIVE STUDIES ON ISOLATES OF LRCANOSTICTA ACICOLA FROM VARIOUS REGIONS AND HOSTS

从福建、广东、广西、江西和安徽湿地松上,江西、浙江、安徽和河南黑松上和广西桐棉松上分离了10个菌株。对它们的形态、培养特性、酯酶同工酶电泳和致病性方面进行了比较。发现从广西相棉松上分离的菌株,在各方面均和其余9个菌株存在着明显不同,而其余9个菌株之间在某些性状上虽表现出一定差异,但基本上还是相似的。初步认为,从广西桐棉松上分离的松针褐斑病菌是一个独立的类型;而其余9个菌株同属于另一个类型。

5 isolates of brown- sport fungus ( Lecanosticta acicola) from Pinus elliottii collected from Fujian, Guangdong, Guangxi, Jiangxi and Anhui provinces and 4 isolates from P. thunbergii collected from Jiangxi, Zhejiang, Anhui and Henan provinces and 1 isolate from P.massoniana colledted from Guangxi province were compared. The result shows that Masson's pine isolate revealed evident difference from the other 9 isolates on the size of conidia cultural features esterase isozyme patterns and pathogenicity and the other 9 isolates are similar in many ways, although there are certain differences among them. It is considered that brown-sport fungus isolated from Guangxi province' s Masson' s pine is an independent pathotype, The other 9 isolates are all a pathotype.