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小麦兰矮病是分布在我国北方冬麦地区,陕北群众称之为“黑疸”灾害的一种病毒病害,由条斑叶蝉(Psammotettix striatus L.)介体传播。主要症状是叶色浓绿、挺硬,茎节矮缩,穗不抽展,穗实率低。新叶片萎化,色淡,背面呈油绿色。病毒质粒线状,16×100～1200毫微米。叶蝉最短获毒期30分钟,体内循回期最少3天,植株体内潜育期11～37天,平均24.2天。中间寄主植物以谷子和狗尾草为主要显性寄主,初步认为是新的病毒病害。
Wheat blue dwarf is a virus disease distributed in the winter wheat region of northern China. The disease is called “black jaundice” in northern Shaanxi. It is transmitted by Psammotettix striatus L. mediator. The main symptoms are dark green leaf color, very hard, stalk dwarf, spike non-pumping, spike solid rate is low. New leaves are faded, pale, the back was oily. Virus plasmid linear, 16 × 100 ~ 1200 nm. Leafhopper was the shortest toxic period of 30 minutes, the body of at least 3 days follow-up period, the potential incubation period of 11 to 37 days, an average of 24.2 days. The host plant in the middle of millet and setaria as the dominant dominant host, initially considered to be a new virus disease.