信阳市油茶病害及其病原鉴定

摘要

The disease occurrence and pathogenic species of Camellia oleifera in Xinyang City were studied through Geld survey as well as isolation, detection and identification of pathogens. Result shows that the diseases of C. oleifera occur commonly in Xinyang area, and C. oleifera is badly damaged. The main diseases are anthracnose, grey speck disease, brown spot, branch rot, and shoot dieback, and the pathogens are Colletotrichum gloeosporioides, Pestalotiopsis theae, Cylospora sp. , Diplodia sp. , Pestalotiopsis microspora, respectively. Among them, Diplodia sp. is a new pathogen record on C. oleifera trees.%通过野外调查及室内病原分离、检测与鉴定对信阳市油荼(Camellia oleifera Abel)病害发生及病原种类进行了研究.结果表明:信阳油茶病害发生普遍,为害严重.主要病害为炭疽病、灰斑病、褐斑病、枝枯病、枯稍病,病原菌分别为胶孢炭疽菌(Colletotrichum gloeosporioides)、茶拟盘多毛孢菌(Pestalotiopsis theae)、壳囊孢菌(Cytospora sp.)、壳色单隔孢菌(Diplodia sp.)、小孢拟盘多毛孢菌(Pestalotiopsis microspora).其中,壳囊孢菌为油荼病害病原新记录.