文献类型: 外文期刊
作者: Wen, Y. C. 1 ; Zhang, S. F. 1 ; Yi, B. 2 ; Wen, J. 2 ; Wang, J. P. 1 ; Zhu, J. C. 1 ; He, J. P. 1 ; Cao, J. H. 1 ;
作者机构: 1.Henan Acad Agr Sci, Henan Key Lab Oilseed Crops Genet Improvement, Inst Ind Crops, Zhengzhou 450002, Peoples R China
2.Huazhong Agr Univ, Natl Key Lab Crop Genet Improvement, Natl Ctr Rapeseed Improvement Wuhan, Wuhan 430070, Peoples R China
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.
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Fertilization enhancing carbon sequestration as carbonate in arid cropland: assessments of long-term experiments in northern China
作者:Wang, X. J.;Wang, J. P.;Wang, X. J.;Wang, X. J.;Xu, M. G.;Zhang, W. J.;Wang, J. P.;Yang, X. Y.;Huang, S. M.;Liu, H.
关键词:Soil carbonate;Stable 13C composition;Carbon sequestration;Fertilization;Cropland;Arid region