您好，欢迎访问青海省农林科学院 机构知识库！
青海省农林科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

QTL analysis and the development of closely linked markers for days to flowering in spring oilseed rape (Brassica napus L.)

文献类型： 外文期刊

作者： Liu, Haidong 1 ; Du, Dezhi 1 ; Guo, Shaomin 1 ; Xiao, Lu 1 ; Zhao, Zhigang 1 ; Zhao, Zhi 2 ; Xing, Xiaorong; Tang, Guo 1 ;

作者机构： 1.Qinghai Univ, Qinghai Acad Agr & Forestry Sci, Natl Key Lab Breeding Base Innovat & Utilizat Pla, Key Lab Spring Rapeseed Genet Improvement, Xining 810016, Qinghai, Peoples R China

2.Qinghai Univ, Qinghai Acad Agr & Forestry Sci, Natl Key Lab Breeding Base Innovat & Utilizat Pla, Key Lab Spring R

关键词： Spring;Brassica napus L.;Doubled haploid lines;Days to flowering;QTL analysis;Molecular markers

期刊名称：MOLECULAR BREEDING （ 影响因子：2.589； 五年影响因子：2.75 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Days to flowering (DTF) is an important trait impacting cultivar performance in oilseed rape (Brassica napus L.), but the interaction of all loci controlling this trait in spring-type oilseed rape is not fully understood. We identified quantitative trait loci (QTL) for variation in DTF in a doubled haploid (DH) population from the Qinghai-Tibet Plateau that includes 217 lines derived from a cross between spring-type oilseed rape (B. napus L.) line No. 5246 and line No. 4512, the latter of which is responsive to the effective accumulated temperature (EAT). A linkage map was constructed for the DH population, using 202 SSR and 293 AFLP markers. At least 22 DTF QTL were found in multiple environments. Four major QTL were located on linkage groups A7, C2, C8 and C8. Among these QTL, cqDTFA7a and cqDTFC2a were identified in five environments and individually explained 10.4 and 23.0 % of the trait variation, respectively. cqDTFC8, a major QTL observed in spring environments, and a unique winter environment QTL, qDTFC8-3, were identified; these QTL explained 10.0 and 46.5 % of the phenotypic variation, respectively. Minor QTL (for example, cqDTFC2c) and epistatic interactions seemed evident in this population. Two closely linked SSR markers for cqDTFA7a and cqDTFC8 were developed (G1803 and S034). BnAP1, a B. napus gene with homology to Arabidopsis thaliana that was identified as a cqDTFA7a candidate gene, played a major role in this study. The allelic effects of the major and minor QTL on DTF were further validated in the DH population and in 93 breeding genotypes.

  • 相关文献

[1]QTL identification on two genetic systems for rapeseed glucosinolate and erucic acid contents over two seasons. Xu, J. F.,Xu, H. M.,Wen, J.,Shi, C. H.,Long, Y.,Meng, J. L.,Wu, J. G.,Zhao, Z. G..

作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：青海省农林科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台