摘要
用８ 个大豆品种作为一组株系鉴别寄主，将黄淮豆区８ 省市２０２ 个毒株划分为７ 个株系（ｙ１ ～ｙ７） 。ｙ１ 及ｙ２ 为弱毒株系，仅侵染感病品种（１１３８２ 、文丰５ 号） ；ｙ３ 、ｙ４ 、ｙ５ 为中毒株系，分别侵染感病和中抗品种（ 齐黄１０ 号、徐豆１ 号、诱变３０ 、鲁豆４ 号） ；ｙ６ 及ｙ７ 为强毒株系，除侵染以上品种外，还侵染高抗品种（ 齐黄２２ 、密荚１ 号） 。全区弱毒株系占５５ ．９ ％ ，中毒株系占２８ ．７ ％ ，强毒株系占１５ ．３ ％ 。江苏、山东、河南、河北、安徽和北京市以弱毒株系为主（４３ ．５ ％ ～８８ ．９ ％ ） ，山西省以中毒株系为主（５０ ．０ ％ ） ，陕西省弱毒株系、中毒株系各占５０ ．０ ％ ，山东、河南、河北３ 省强毒株系所占比例较高（２２ ．４ ％ ～３３ ．３ ％ ） 。
Two hundred and two samples of soybean mosaic virus(SMV)collected from seven provinces and one city were identified and classified into seven strains(y 1-y 7) based on disease reaction on eight soybean cultivars. The y 1 and y 2 were the low virulence strains, which only infected susceptible cultivars (1138 2 and Wenfeng 5). The y 3, y 4 and y 5 were the moderately virulence strains, which infect susceptible and moderately resistant cultivars (Qihuang 10,Xudou 1,Youbian 30 and Ludou 4). The y 6 and y 7 were the high virulence strains, which not only infected above six cultivars but also two resistant cultivars (Qihuang 22 and Mijia 1). The low virulence strains, moderately virulence strains and high virulence strains account for 55.9%,28.7% and 15.3% of SMV in Huang Huai area,respectively. Most strains of SMV in Jiangsu, Shandong, Henan, Hebei, Anhui and Beijing were low virulence ( 43.5% -88.9%). In Shanxi province, moderately virulence strain was predominant (50.0%). The low virulence strains and moderately virulence strains were 50.0% each in Shaanxi province. The rate of high virulence strains was higher in Shandong, Hebei and Henan provinces (22.4%-33.3%). The distribution of SMV strains in Huang Huai area was stable to some extent.
出处
《植物病理学报》
CAS
CSCD
北大核心
1999年第2期115-119,共5页
Acta Phytopathologica Sinica
基金
山东省自然科学基金
关键词
大豆花叶病毒
株系鉴定
株系分布
黄淮区
soybean mosaic virus,identification of strains,distribution of strains
