大豆对SMV株系SC-11的抗性遗传及抗病基因的等位性研究  

STUDIES ON INHERITANCE AND ALLELISM OF RESISTANCE GENES TO SMV STRAIN SC-11 IN SOYBEAN

作　　者：李海朝[1] 智海剑[1] 白丽[1] 杨华[1] 马莹[1] 刘宁[1] 王大刚[1] 

机构地区：[1]国家大豆改良中心南京农业大学大豆研究所作物遗传与种质创新国家重点实验室,南京210095

出　　处：《大豆科学》2006年第4期365-368,共4页Soybean Science

基　　金：长江学者和创新团队发展计划;国家自然科学基金(30571176)

摘　　要：利用对我国北方大豆产区流行株系SC-11表现抗病的材料科丰1号、邳县茶豆、大白麻、齐黄22、诱变30、PI96983、Kwanggyo和感病材料南农1138-2、南农18-6配制的抗感和抗抗杂交组合,研究了对SC-11的抗性遗传以及不同材料的抗病基因间的等位性关系。结果表明,科丰1号、邳县茶豆、大白麻、PI96983、Kwanggyo、齐黄22、诱变30与感病品种杂交的F1表现抗病,F2呈3抗∶1感分离比例,F2∶3家系呈1抗∶2分离∶1感病的分离比率,证明它们对SC-11的抗性由单显性基因控制。PI96983×Kwanggyo和齐黄22×诱变30杂交后的F2群体未发现抗感分离,表明PI96983与Kwanggyo以及齐黄22与诱变30对SC-11的抗性基因是等位或紧密连锁的。大白麻与科丰1号、邳县茶豆、诱变30,科丰1号与Kwanggyo,PI96983与邳县茶豆杂交的F2呈15抗∶1感的比例分离,初步表明大白麻与科丰1号、邳县茶豆、诱变30,科丰1号与Kwanggyo,PI96983与邳县茶豆所携带的抗SC-11的基因是不等位的,而且2个抗性基因独立遗传。Seven soybean （Glycine max （L） Merr） cultivars with resistance to SMV strain SC-11, Kefeng 1, Pixianchadou, Dabaima, Qihuang22, Youbian30, PI96983 and Kwanggyo was crossed respectively with a susceptible （S） cultivar （Nannong 1138-2 or Nannong18-6） to determine the inheritance of their resistance （R） reaction to SC-11. Each R parents were also crossed with each other to test the allelism of the resistance genes. The results showed that a dominant gene controlled the resistance to SC-11 in each of Kefengl, Pixianchadou, Dabaima, Qihuang22, Youbian30, PI96983 and Kwanggyo respectively. The absence of S segregation in F2 populations of the crosses PI96983 × Kwanggyo and Qihuang22 × Youbian30, indicated that the single dominant gene in them were alleles at a common locus or very closely linked. Segregation in the F2 populations from Dabaima × Kefengl, Kefengl ×Kwanggyo, PI96983 × Pixianchadou, Dabaima×Pixianchadou, Dabaima× Youbian30 was consistent with a ratio of 15R ：1S. It was inferred that the resistance genes between Dabaima and Kefengl, Pixianchadou, Youbian30; between Kefengl and Kwanggyo; between PI96983 and Pixianchadou were not at same locus.

关 键 词：大豆 大豆花叶病毒 抗性遗传 等位性 

分 类 号：S565.1[农业科学—作物学]