广东省火龙果腐烂病病原鉴定

Identification of pathogen causing fruit rot of Hylocereus undatus in Guangdong Province

通过对来自广东省湛江市的发病火龙果果实的病原进行分离、致病性测定及形态学观察,将引起广东省火龙果腐烂病的病原鉴定为仙人掌平脐蠕孢Bipolaris cactivora,该种真菌为中国大陆新记录种。该病原菌的鉴定,对控制中国大陆火龙果腐烂病的发生和扩散有重要的理论指导意义。

In the summer of 2009,fruit rot of Hylocereus undatus occurred heavily in storehouses in Zhanjiang district of Guangdong Province.The pathogen causing the disease was identified as Bipolaris cactivora based on systematic analysis including isolation,pathogenicity test and morphological observation.To our best knowledgement,it is the first report of B.cactivora infecting H.undatus in China mainland.