Identification of QTLs involved in pod-shatter resistance in Brassica napus L.

文献类型： 外文期刊

第一作者： Wen, Y. C.

作者： Wen, Y. C.;Zhang, S. F.;Wang, J. P.;Zhu, J. C.;He, J. P.;Cao, J. H.;Yi, B.;Wen, J.

作者机构：

关键词： Brassica napus L.;linkage map;molecular marker;pod-shatter resistance index;QTL

期刊名称：CROP & PASTURE SCIENCE （ 影响因子：2.286； 五年影响因子：2.507 ）

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收录情况： SCI

摘要： Seed loss caused by pod-shatter during harvesting is one of the main problems in rapeseed production worldwide. Quantitative trait loci (QTLs) for pod-shatter based on genetic mapping would help breeders develop cultivars resistant to pod-shatter. In this study, we constructed a genetic map of Brassica napus containing 107 simple sequence repeat (SSR) markers and 68 sequence-related amplified polymorphism (SRAP) markers using a doubled-haploid (DH) population of 276 lines derived from the cross H155 x Qva. This map covered 1382.8cM with an average marker interval of 7.9cM. In total, 13QTLs for pod-shatter resistance were identified in this DH population at two experimental sites (in Wuhan and Zhengzhou); three of the QTLs were present at both locations. At Zhengzhou, nine QTLs, identified in linkage groups A1, A7, A8, C5, and C8, together explained 49.0% of the phenotypic variation. At Wuhan, four QTLs were mapped on the A1, A4, A7, and C8 linkage groups. These QTLs explained 38.6% of the phenotypic variation. These results may serve as a valuable basis for further molecular dissection of pod-shatter resistance in B. napus, and for development of the markers related to QTLs that may be useful for marker-assisted selection of pod-shatter resistant cultivars.

分类号： S

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