我国水稻上一种类似条纹叶枯病的探讨

 为了弄清我国类似水稻条纹叶枯病的病原及其生物学特性,自1984年起,选用我国的病株进行了有关测试.人工接种,该病原物能侵染水稻、早稻和小麦,不能侵染玉米、高粱和苏丹草.在大量的病组织超薄切片和分离提纯液的电镜观察中,均未见到分枝丝状体病毒,病株汁液和提纯液与日本的RSV抗血清均为阴性反应.此外,本实验还从类菌原体、类病毒和虫毒等方面进行了测试,除虫毒拟有一定的可能性外,其余都可以排除在真正病原之外。

ON THE RSV-LIKE DISEASE OF RICE IN CHINA

Since 1983,the writers had collected a great number of typical RSV-like rice samples from Beijing and Hangzhou paddy rice fields.Many ultrathin sections were prepared from the diseased rice leaves and observed under electron microscope.No virus particles either spherical or filamentous were ever observed.The extract of the disease rice plants was not reactive with the RSV antiserum sent from Japan.However,the agent of the RSV-like disease could be specifically transmitted by the same vector plant-hopper(Laodelphax striatellus) of RSV from rice plant to rice plants and to wheat plants but not to maize plants or any other graminous plants so far tested.