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大豆粒形性状与百粒重的QTL定位

Journal of Northeast Agricultural University(2019)

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Abstract
文章选用东农46和L-100杂交构建的F2:10、F2:11代大豆重组自交系群体127个家系为作图群体,通过全基因组重测序技术,开发bin标记,构建高密度遗传连锁图谱,结合两年四点的大豆粒形性状和百粒重表型数据,利用IciMapping 4.0软件的完备区间作图法作加性QTLs和QTLs间上位性互作检测.结果表明,经粒形性状和百粒重主效QTLs检测,获得81个与大豆粒长、粒宽、粒厚、粒体积和百粒重相关QTLs,分布于18条染色体,贡献率1.66%~30.70%,其中贡献率最高位点分别为qSL-4-2(23.85%)、qSW-1-1(15.40%)、qST-1-2(17.66%)、qSV-15-1(30.70%)和q100-SW-19-1(15.43%);经相关性状加性×加性上位性互作检测,获得43对大豆粒形性状和百粒重加性×加性上位互作效应QTLs,贡献率1.41%~23.19%.
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