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Genetic mapping of yield traits using RIL population derived from Fuchuan Dahuasheng and ICG6375 of peanut (Arachis hypogaea L.).
Molecular Breeding ( IF 2.6 ) Pub Date : 2017-02-22 , DOI: 10.1007/s11032-016-0587-3 Yuning Chen 1 , Xiaoping Ren 1 , Yanli Zheng 1 , Xiaojing Zhou 1 , Li Huang 1 , Liying Yan 1 , Yongqing Jiao 1 , Weigang Chen 1 , Shunmou Huang 1 , Liyun Wan 1 , Yong Lei 1 , Boshou Liao 1 , Dongxin Huai 1 , Wenhui Wei 1 , Huifang Jiang 1
Molecular Breeding ( IF 2.6 ) Pub Date : 2017-02-22 , DOI: 10.1007/s11032-016-0587-3 Yuning Chen 1 , Xiaoping Ren 1 , Yanli Zheng 1 , Xiaojing Zhou 1 , Li Huang 1 , Liying Yan 1 , Yongqing Jiao 1 , Weigang Chen 1 , Shunmou Huang 1 , Liyun Wan 1 , Yong Lei 1 , Boshou Liao 1 , Dongxin Huai 1 , Wenhui Wei 1 , Huifang Jiang 1
Affiliation
The genetic architecture determinants of yield traits in peanut (Arachis hypogaea L.) are poorly understood. In the present study, an effort was made to map quantitative trait loci (QTLs) for yield traits using recombinant inbred lines (RIL). A genetic linkage map was constructed containing 609 loci, covering a total of 1557.48 cM with an average distance of 2.56 cM between adjacent markers. The present map exhibited good collinearity with the physical map of diploid species of Arachis. Ninety-two repeatable QTLs were identified for 11 traits including height of main stem, total branching number, and nine pod- and seed-related traits. Of the 92 QTLs, 15 QTLs were expressed across three environments and 65 QTLs were newly identified. Twelve QTLs for the height of main stem and the pod- and seed-related traits explaining more than 10 % of phenotypic variation showed a great potential for marker-assisted selection in improving these traits. The trait-by-trait meta-analysis revealed 33 consensus QTLs. The consensus QTLs and other QTLs were further integrated into 29 pleiotropic unique QTLs with the confidence interval of 1.86 cM on average. The significant co-localization of QTLs was consistent with the significant phenotypic correlations among these traits. The complexity of the genetic architecture of yield traits was demonstrated. The present QTLs for pod- and seed-related traits could be the most fundamental genetic factors contributing to the yield traits in peanut. The results provide a good foundation for fine mapping, cloning and designing molecular breeding of favorable genes in peanut.
中文翻译：
利用富川大化生和花生（Arachis hypogaea L.）的ICG6375衍生的RIL群体对产量性状进行遗传作图。
花生（Arachis hypogaea L.）产量性状的遗传结构决定因素知之甚少。在本研究中，已努力使用重组自交系（RIL）绘制产量性状的数量性状基因座（QTL）。构建了包含609个基因座的遗传连锁图谱，涵盖了总计1557.48 cM，相邻标记之间的平均距离为2.56 cM。本图与Arachis二倍体物种的物理图表现出良好的共线性。从11个性状中鉴定出92个可重复QTL，包括主茎高度，总分枝数以及9个与荚果和种子相关的性状。在这92个QTL中，有15个QTL在三种环境中表达，新确定了65个QTL。十二个主要茎高以及与豆荚和种子相关性状的QTL解释了超过10％的表型变异，表明在改良这些性状方面有很大的潜力进行标记辅助选择。按特征进行的荟萃分析揭示了33个共有QTL。共有QTL和其他QTL被进一步整合到29个多效性独特QTL中，平均置信区间为1.86 cM。QTL的显着共定位与这些性状之间的显着表型相关。证明了产量性状遗传结构的复杂性。目前与豆荚和种子相关性状的QTLs可能是促成花生产量性状的最基本的遗传因素。结果为精细映射提供了良好的基础，
更新日期：2019-11-01
中文翻译：
利用富川大化生和花生（Arachis hypogaea L.）的ICG6375衍生的RIL群体对产量性状进行遗传作图。
花生（Arachis hypogaea L.）产量性状的遗传结构决定因素知之甚少。在本研究中，已努力使用重组自交系（RIL）绘制产量性状的数量性状基因座（QTL）。构建了包含609个基因座的遗传连锁图谱，涵盖了总计1557.48 cM，相邻标记之间的平均距离为2.56 cM。本图与Arachis二倍体物种的物理图表现出良好的共线性。从11个性状中鉴定出92个可重复QTL，包括主茎高度，总分枝数以及9个与荚果和种子相关的性状。在这92个QTL中，有15个QTL在三种环境中表达，新确定了65个QTL。十二个主要茎高以及与豆荚和种子相关性状的QTL解释了超过10％的表型变异，表明在改良这些性状方面有很大的潜力进行标记辅助选择。按特征进行的荟萃分析揭示了33个共有QTL。共有QTL和其他QTL被进一步整合到29个多效性独特QTL中，平均置信区间为1.86 cM。QTL的显着共定位与这些性状之间的显着表型相关。证明了产量性状遗传结构的复杂性。目前与豆荚和种子相关性状的QTLs可能是促成花生产量性状的最基本的遗传因素。结果为精细映射提供了良好的基础，
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