通过病害症状和病原形态学特征对吉林省香菜种植区白粉病病原菌进行鉴定,结果为该病由独活白粉菌(Erysiphe heraclei DC.)引起。香菜白粉病为吉林省香菜一新病害,且芫荽属为东北地区白粉菌属级新记录寄主。 The pathogens of powdery mildew pathogen in coriander planting area of ​​Jilin Province were identified through disease symptoms and pathomorphological features. The result was that the disease was caused by Erysiphe heraclei DC. Coriander powdery mildew is a new disease of parsley in Jilin province, and coriander genus is the new record host of powdery mildew genus in northeast China.