QTL mapping for adult-plant resistance to powdery mildew in Chinese elite common wheat Chuanmai104
文献类型： 外文期刊
第一作者： Liu, Z.
作者： Liu, Z.;Wang, Q.;Wan, H.;Li, J.;Yang, W.;Liu, Z.;Yang, F.;Wei, H.;Xu, Z.;Ji, H.;Xia, X.
作者机构：
关键词： Wheat; Powdery mildew; Chuanmai104; Adult-plant resistance; QTL
期刊名称：CEREAL RESEARCH COMMUNICATIONS （ 影响因子：0.85； 五年影响因子：1.067 ）
ISSN： 0133-3720
年卷期：
页码：
收录情况： SCI
摘要： Powdery mildew, caused byBlumeria graminisf. sp.tritici, is a major fungal disease of wheat worldwide. The economic and environmentally friendly strategy is developing the wheat varieties with resistance to powdery mildew in wheat-breeding program. Chuanmai104 (CM104,Triticum aestivumL.), derived from synthetic hexaploid wheat, was an elite wheat variety with high adult-plant resistance to powdery mildew. The phenotype of powdery mildew resistance was conducted on a set of 234 recombinant inbred lines (RIL, F-8) derived from the cross of CM104 and high susceptible wheat landrace Baimaomai (BMM) in five environments in this study. Three QTLs were identified on chromosomes 7D and 4A by the high-density wheat 50 K single-nucleotide polymorphism array, designed asQPm.saas-7DS,QPm.saas-4ALandQPm.saas-4AS, respectively. Of the three QTLs,QPm.saas-7DSderived from BMM andQPm.saas-4ALderived from CM104 were minor locus,QPm.saas-4ASderived from CM104 was detected as a new major locus for adult-plant resistance to powdery mildew in all environments and localized in a 1.06 Mb interval of the genomic region on chromosome arm 4AS referenced to Chinese Spring genome explained up to 26.5% of the phenotypic variances. The newly major locusQPm.saas-4ASwould be supplied as a resistant source in wheat-breeding program.
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