Identification of Corynespora leaf spot pathogen of Salvia splendens
一串红叶斑病的病原菌鉴定

The Corynespora leaf spot of Salvia splendens was found in the screenhouses covered with black plastic shade nettings for cultivating ornamental plants in the Institute of Hangzhou Agricultural Sciences. The fungal pathogen infected stems and leaves of the host plants and caused stem rot and leaf spots, resulting in earlier defoliation and plant wilting or even death. The morphological observation and rDNA ITS sequence analyses proved that the isolates of the causal agent were C. cassiicola. The pathogenicity tests confirmed that Salvia splendens is a natural host of C. cassiicola. Seed inspection showed that C. cassiicola contaminating rate was only 1%.