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小麦黄花叶病的病状是黄色花叶。病株细胞内有1至数个内含体。病毒质粒为线状,稍弯曲,大小为13×100-600毫微米,存在于细胞质中。内含体呈风轮状。病毒仅感染小麦属(Triticum)10多种,能通过病根、病土及它们侵出液传染。介体为禾谷多粘霉(Polymyxa graminis),其寄主有小麦等28种禾本科植物。病土加灭菌土1000倍混合仍有致病性,病田表土致病性最强,深到31—40厘米处还会发病。田间3月中旬以后病株不再增加。予防本病以选育选育抗病品种为主,辅以轮作,增施肥料和迟播等。
Wheat yellow mosaic disease symptoms are yellow mosaic. Diseases within the cells 1 to several inclusion bodies. Viral plasmids are linear and slightly curved with a size of 13 x 100-600 nm and are present in the cytoplasm. Inclusion body was wind-shaped. The virus infects only 10 species of Triticum and can be transmitted through diseased roots, pathogenic bacteria and their invading fluids. The mediator is Polymyxa graminis, whose host is wheat and other 28 species of gramineous plants. Pathogenic soil plus sterilization 1000 times mixed still pathogenic, the most pathogenic topsoil pathogenic disease, deep to 31-40 cm at the onset. The number of diseased plants did not increase after mid-March in the field. To prevent this disease breeding and breeding of disease-resistant varieties, supplemented by rotation, fertilization and delayed planting and so on.