Quantitative trait locus analysis for kernel width using maize recombinant inbred lines

文献类型: 外文期刊

第一作者: Hui, G. Q.

作者: Hui, G. Q.;Yang, H. P.;Luo, Q.;Zhang, H. M.;Wen, G. Q.;Liu, X. H.;Song, H. X.;Wen, L.;Sun, Y.;Zhang, H. M.

作者机构:

关键词: Maize (Zea mays L.);Kernel width;Quantitative trait locus;Genetic mechanism

期刊名称:GENETICS AND MOLECULAR RESEARCH ( 影响因子:0.764; 五年影响因子:0.912 )

ISSN: 1676-5680

年卷期: 2015 年 14 卷 4 期

页码:

收录情况: SCI

摘要: Maize (Zea mays L.) kernel width is one of the most important traits that is related to yield and appearance. To understand its genetic mechanisms more clearly, a recombinant inbred line (RIL) segregation population consisting of 239 RILs was used for quantitative trait locus (QTL) mapping for kernel width. We found four QTLs on chromosomes 3 (one), 5 (two), and 10 (one). The QTLs were close to their adjacent markers, with a range of 0-23.8 cM, and explained 6.2-19.7% of the phenotypic variation. The three QTLs on chromosomes 3 and 5 had positive additive effects, and to a certain extent increased kernel width, whereas the one on chromosome 10 exhibited negative additive effects and decreased kernel width. These results can be used for gene cloning and marker-assisted selection in maize-breeding programs.

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