Identification of Anthracnose Pathogen on Euonymus japonicus and Its Sensitivity to Chemical Fungicides in Beijing
作者单位：Institute of Plant ProtectionBeijing Academy of Agriculture and Forestry Sciences College of Life SciencesYangtze University
会议名称：《中国植物病理学会2023年学术年会》
会议日期：2023年
摘 要：As an evergreen shrub,Euonymus japonicus plays important roles in urban landscape *** is one of important limiting factors affecting the healthy growth of ***,seriously influencing the improvement of urban landscape ***,the Colletotrichum species associated with anthracnose on *** are *** this study,a total of 274 anthracnose leaf samples from 55 locations in 12 districts of Beijing were collected and the field symptoms were classified into ten *** a total of 194 strains were isolated and recognized as eight Colletotrichum species according to morphological characteristics and multi-locus phylogenetic *** them,C aenigma,***,*** and *** were first discovered to infect leaves of *** in the world,*** was first discovered to infect leaves of *** in *** analysis found that ***,*** and *** were dominant pathogens of anthracnose on ***,with *** possessed highest isolation ratio and widest distribution area,which deserve precautions in *** pathogenicity assay indicated that wounding was conducive to the pathogenicity of Colletotrichum *** *** *** varying degrees of pathogenicity on leaves of ***,amongwhich *** was the most virulent either by mycelial discos or conidial suspensions *** addition,fungicide assay based on the mycelial growth showed that prochloraz was effective on the three dominant pathogens of anthracnose on ***,with the EC average values 0.406 5 mg/L,0.407 9 mg/L and 0.072 9 mg/L,*** findings provide a contribution to the prevention and control of anthracnose on *** by better understanding the involved Colletotrichum species.