小麦黄叶病毒(WYLV)属于井上等(1973)记载的甜菜黄化病毒组(closterovi-us),由玉米蚜(Rhopalosiphum maidis)进行半持久性传播。小麦黄叶病发生在4月前后至收获期,导致小麦和大麦黄化、枯死,燕麦叶片变红到枯死,如若流行起来,则酿成严重减产。它可能成为农业生产上的严重病害。最 Wheat yellow leaf virus (WYLV) belongs to the group of closterovi-us described in Inoue et al. (1973) and is semi-permanently transmitted by the maize aphid (Rhopalosiphum maidis). Wheat yellow leaf disease occurs around April to harvest, resulting in yellowing of wheat and barley, and the death of oat leaves. The oat leaves turn red and die, and if prevailed, cause serious cuts. It may become a serious disease in agricultural production. most