摘要
为研究大豆对SMV抗扩展的遗传机制,以中豆29×中豆32构建的重组自交系群体(RIL)为材料,人工接种SC-3株系。以病情指数为抗性指标,应用主基因+多基因混合遗传模型进行遗传分析,利用复合区间作图法进行QTL定位。结果表明:该RIL群体对SC-3株系的抗性遗传符合B-2-3遗传模型,即抗性由2对等加性主基因控制,加性效应为-9.78,主基因遗传率为97.65%。在3个染色体上检测到3个抗性相关QTL,表型贡献率为10.80%～13.41%。
In order to study the genetic mechanism of resistance in development to Soybean Mosaic Virus（SMV）in soybean[Glycine max（L.）Merr.],a recombinant inbred line（RIL）population consisting of 144 lines derived from Zhongdou No.29 × Zhongdou No.32 was inoculated with the SMV strain SC-3.Genetic analysis was conducted by the major gene plus polygene mixed inheritance model,and QTLs were detected by composite interval mapping（CIM）based on the resistance reaction indicated by disease index.The results showed that the inheritance of resistance to strain SC-3 was controlled by two equality-additive major gene with an additive effect of-9.78 and a heritability of 97.65% for the major genes.Three QTLs were detected on chromosome 6,10 and 13 respectively,explaining 10.80%-13.41% of phenotypic variation.
出处
《大豆科学》
CAS
CSCD
北大核心
2012年第4期511-516,共6页
Soybean Science
基金
国家自然科学基金(30871554,30900906)
现代农业产业技术体系建设专项资金
关键词
大豆
SMV
遗传分析
QTL
Soybean
Soybean Mosaic Virus
Genetic analysis
QTL
