Validation of the quantitative trait locus underlying soybean plant height using residual heterozygous lines and near-isogenic lines across multi-environments
文献类型: 外文期刊
第一作者: Yan, Long
作者: Yan, Long;Zhang, Yuanyuan;Yang, Chunyan;Chen, Qiang;Liu, Bingqiang;Di, Rui;Zhang, Mengchen;Yan, Long;Song, Qijian;Cregan, Perry B.;An, Yongqiang Charles;Wu, Chengjun
作者机构:
关键词: Soybean;Plant height;QTL;Multi-environments;RHLs;NILs
期刊名称:EUPHYTICA ( 影响因子:1.895; 五年影响因子:2.181 )
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收录情况: SCI
摘要: Illustrating the consistency and pleiotropic effects of a quantitative trait locus (QTL) across multi-locations is important for breeding. In this study, a QTL qPH_6_1, underlying soybean plant height, was positioned on chromosome 6 using a BC2F5 family, which was developed using 'Jidou 12' as recurrent parent, and 'Xinbada 2' as donor parent. The residual heterozygous lines (RHLs) derived from BC2F5 plants that segregated at qPH_6_1 were used to validate and pinpoint the QTL at both locations. For RHLs, qPH_6_1 explained approximately 80% of the variance for plant height and number of nodes, and was positioned in a 3.5 cM interval co-segregated with Satt557, Satt489, Satt134 and Satt289. The analysis of near-isogenic lines, developed from RHLs, also showed that qPH_6_1 had a significant impact on plant height and number of nodes across the other ten locations in 2 years. A larger genetic effect was observed at locations in north China than in south. While, qPH_6_1 could only explain 1.6-30.4% of the phenotypic variation for 100-seed weight, protein content, oil content, and grain yield, and their effects varied with locations. The results provide information for breeding widely adapted soybean cultivars.
分类号: S3
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