Studies of reidentification of several kinds of Botryosphaeria sp. causing the tree cankers and diebacks.

对引起针叶树枯梢病、白杨枯梢病、桤木枯梢病、核桃褐枯病、枫树粗皮病和日本落叶松枯梢病的病原真菌进行了重新鉴定。序列分析和形态特征观察结果表明，所有供试菌株和样品均属于葡萄座腔菌属（Botryosphaeria sp.），但针叶树枯梢病、桤木溃疡病、核桃褐枯病和枫树糙皮病的形态特征观察结果与序列分析结果雅阁，未鉴定出菌株。

I performed reidentification of the pathogenic fungi that is causing the tree cankers and diebacks on Guignardia dieback of Conifers, Guignardia canker of Poplar, Guignardia canker of Alder, Brown blight of Walnuts, Rough bark of Maples and Shoot blight of Japanese larch. As a result of sequence analysis and the observation on morphological characteristics, all isolates and all specimen which did test for this experiment were included in Botryosphaeria sp. However, Guignardia dieback of Conifers, Guignardia canker of Alder, Brown blight of Walnuts, and Rough bark of Maples were not identified, because result of the observation on morphological characteristics did not accord with sequence analysis.