论文部分内容阅读
我省春季麦田发生的一种被称为“小麦黄叶病”的新病毒病,病叶呈不规则条斑或梭条状花叶,黄化。感病适宜土温为15℃左右,发病适温为7—10℃,15℃以上逐渐隐症。病田土和有多粘菌危害的病麦根具有传病作用。此病毒只感染小麦,不感染大麦、黑麦和燕麦。病叶表皮细胞内具有无定形内含体,超薄切片可见风轮状内含体。病毒粒体为线状,最长粒体可达2400nm以上。根据上述特性,此病毒被鉴定为小麦梭条花叶病毒(WSSMV)。
A new type of virus disease called “wheat yellow leaf disease” occurred in the spring wheat field in our province. The diseased leaves showed irregular streaks or shuttle-like mosaic and yellowing. Appropriate soil temperature is about 15 ℃, the incidence of appropriate temperature is 7-10 ℃, 15 ℃ above gradually hidden disease. Sick soil and polymyxa harmful wheat disease has the role of disease. This virus infects only wheat and does not infect barley, rye and oats. Diseased leaf epidermal cells with amorphous inclusions, ultra-thin slices can be seen wind-round inclusion body. Virus mitochondria for the linear, the longest granule up to 2400nm above. According to the above characteristics, the virus was identified as Wheat Spindle Mosaic Virus (WSSMV).