大麦条纹花叶病是由大麦条纹花叶病毒(BSMV)引起,种子传染。此病后期在叶上表现的条纹症状,与真菌性的大麦条纹病(Helminthosporium gramineum Rabh)相近似,故又称大麦伪条纹病。 大麦条纹花叶病在世界上分布普遍,美国、加拿大、墨西哥、巴西、以色列、日本、巴基斯坦、苏联、澳大利亚以及欧洲各国都有发生。该病除为害大麦外,还能侵染小麦、燕麦、黑麦、玉米等70余种禾本科植物及甜菜等双子叶植物。据报道,国外因该病造成的产量损失,大麦一般为60％,小麦为75％。尤为重要的是,该病主要以种子带毒 Barley stripe mosaic disease is caused by barley stripe mosaic virus (BSMV), a seed infection. Barley stripe disease, also known as barley, is similar to the fungal barley stripe disease (Helminthosporium gramineum Rabh) in the late stage of the disease. Barley stripe mosaic disease is widespread in the world, with the United States, Canada, Mexico, Brazil, Israel, Japan, Pakistan, the Soviet Union, Australia and all European countries. In addition to the disease harmful to barley, but also infect wheat, oats, rye, corn, more than 70 kinds of grasses and sugar beet and other dicots. It is reported that the yield loss caused by the disease abroad is generally 60% for barley and 75% for wheat. More importantly, the disease is mainly poisoned by seeds