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本研究对３４８份大豆种质资源，包括“七五”、“八五”鉴定出的抗源，各地推广 品种及国外引进品种，人工汁液摩擦法接种ＳＭＶ３号株系进行抗性鉴定。鉴定结果 表明，１１３份资源表现为高抗 ＳＭＶ３，占 ３２． ４７％，１１３份表现为中抗，占 ３２． ４７％， １２２份感病，占３５． ０６％。抗源主要来自于东北春作大豆区和黄淮海夏作大豆区，本实 验南方大豆产区资源抗性较弱。高抗资源主要来源于辽宁、山东、山西、北京以及美国 和韩国。不同品种接种后的症状类型不同，表明症状反应是品种与株系互作的结果。 国外引进资源接种后顶枯症状较多，表明症状反应和品种的地理来源有一定关系。本 文还分折了美国一些抗源对 ＳＭＶ３的抗性反应及抗性基因的关系。
In this study, 348 soybean germplasm resources, including the resistance identified in the “75” and “85”, the promotion varieties from all over the world, and imported varieties from abroad were inoculated with the SMV3 strain by artificial juice method for resistance identification. The identification results showed that 113 resources showed high resistance to SMV3, accounting for 32%. 47%, 113 showed resistance, accounting for 32%. 47%, 122 were infected, accounting for 35%. 06%. The sources of resistance mainly come from the northeast spring soybean field and the Huang-Huai-Hai summer crop soybean zone, and the resource resistance of the southern soybean producing region in this experiment is weak. High resistance to resources mainly from Liaoning, Shandong, Shanxi, Beijing and the United States and South Korea. Different types of symptoms after vaccination are different, indicating that the symptom response is the result of the interaction of varieties and strains. After the introduction of foreign resources, there are more symptoms of top-dead and withering, indicating that the symptoms and the geographical origin of the cultivars have a certain relationship. This article also points out some of the resistance of the United States to SMV3 resistance and resistance genes.