摘要
本文通过１２个（抗×感）杂交组合Ｆ＿１、Ｆ＿２、回交ＣＦ１和基因等位性测交组合Ｆ＿１、Ｆ＿２群体对东北大豆花叶病毒２号株系抗性的分析，明确了４个引用抗原的抗性水平及应用价值。鲁豆４和跃进４抗原的抗性为两对具有抑制作用的显性基因控制，抗、感分离比例为１３：３；徐豆２和辽８１－５０１７抗原的抗性为两对显性互补基因控制，抗、感分离比例为９：７，但在其杂交后代中易出现大量顶枯株。等位性测验表明：吉林２１和跃进４、鲁豆４的抗病基因不在同一座位，并且独立遗传。跃进４和鲁豆４抗原有亲缘关系。
Resistant level and utilization value of resistant parents made definitely by analysis of F_1、F_2 and CF_1 populations from the cross of them with susceptible ones to No. Ⅱ strain of Soybean Mosaic Virus(SMV)and allelic test. 4 resistant-disease parents have genes with dominant or partially dominant effect. Ludou4 and Yue-jin4 have two dominant genes with inhibitary effect operating on No.Ⅱstrain of SMV , Xudou2 and Liao81-5017 are under two dominant complementary genes controlling No. Ⅱ strain of SMV. The allelic test showed that the two genes in Lu-dou4 and Yue-jin4 and one gene in Jilin21 are not the same locus. Yue-jin4 is related to Lu-dou.Their resistant genes might come from the same resistant parent.
