【摘要】 经田间采集、分离培养、室内鉴定及致病性测定。本文报道了寄生于菊科Comp ositae和桑科M oraceae等9种草本植物上的3种尾孢菌及其病害:蒿褐斑病(C ercospora artenm isiae Y.L.Guo&Y.Jiang)、蓟褐斑病(Cercosp ora cirsii Ellis&Everh.)和草褐斑病(Cercospora humuligena Y.L.Guo&L.X u)。上述病害在国内外均未见报道,属国内3种新病害,其中9种草本植物为国内新纪录寄主。并对每一种病害的症状和病原形态进行了描述。更多还原

【Abstract】 Three fungous diseases were found first on nine forage grasses in China in the paper,through field collection,isolation culture,test of pathogenicity and retro-isolation.Among which Cercospora artenmisiae on Artemisia sp.,C.cirsii on Cirsium sp.and C.humuligena on Humulus scandentis were new diseases within China.9 kinds host of Cercospora were new records host plants in China.Diseases symptom and morphology were described of each diseases its causal agent.更多还原