提纯的水稻条纹病毒（云南宜良分离物）在电镜下的形态为多型性，但主要是宽8－10urn，长80－25O的分枝丝状体，有些为直径3urn或8urn的开环环状体，有些为13urn宽，130－190urn长的丝状体，但其基本结构应是直径3urn、长度不等的丝状体。经聚丙烯酸胺凝胶电泳分析，VRNA4编码的病害特异蛋白（SP）分子量为19．9kDa，而VCRNA3编码的外壳蛋白（CP）约为336kDa。在非变性条件下，RSV的4条ssRNAs大小分别为3OXIO（ssRNAI）、互．2XIc（ssR．NAZ）、0．9X10（ssRNA3）和0．8X10Da（SSRNA4），有时出现一条大小为0．58X10Da的单链RNA（ssRNA）；而4条dsRNAs的分子量分别为4．9X10（dsRNAI）、2．8X10（dsRNAZ）、20XIOo（dsRNA3）和1．7X10D。（dSRNA4）。利用制备电泳分离提纯的外壳蛋白免疫家兔，得到了高特异性的抗血清。A蛋白夹心ELISA检测结果表服RSV－CP与水稻草状矮化病毒（RGSV）CP抗血清有微弱的反应，但与RSV、RGSV的SP抗血清没有反应，而RSV－CP抗血清与RSV．SP及RGSV的SP、CP都无血清学关系，这个结果表明RGSV与RSV之间在进化上具有一定的亲缘关系。

An isolate of rice stripe virus (designated as RSVYL) was purified. The particlesshowed to be pleomorphisms under electron microscope, mainly branched filamnts of about 80-250 nm in length and abeut 8 nm in width. There are also some open circular filaments of 3nm and 8 nm in width, and some filaments of 13 nm in width and 130-190 nm in length.The basic morphism of RSV particles should be filaments of 3 nm in width and various length.By SDS-PAGE analysis, the molecular weight of disease-specific protein (SP) encoded by vRNA4 was 19. 9 kDa and tha of coat protein (CP) encoded by vcRNA3 was 33. 6 kDa. Whennucleic acid extrcted from the purified RSV was electrophoresed under nondenaturing condition, the she of four dsRNAs(designated as dsRNA1-4 in order of decreasing size) was 4. 9106, 2. 7106, 2.0106 and 1. 7106 Da, respectively, and that of four ssRNAs (designated as ssRNA1-4 in order of decreasing size) was 3. 0106, 1. 2106, 0. 9 106 and 0. 8106 De, respectively. A fifth Segment with a size of 0. 58106