论文题目: Characterization of the temporal and spatial expression of wheat (Triticum aestivum L.) plant height at the QTL level and their influence on yield-related traits
论文编号:
作者: Na Zhang(张娜), Xiaoli Fan, Fa Cui(崔法), Chunhua Zhao, Wei Zhang(张玮), Xueqiang Zhao, Lijuan Yang, Ruiqing Pan(潘瑞青), Mei Chen, Jie Han, Jun Ji(纪军), Dongcheng Liu, Zongwu Zhao, Yiping Tong, Aimin Zhang, Tao Wang, Junming Li(李俊明)
刊物名称: Theoretical and Applied Genetics
卷期页码: Published online, ,
发表年度: 2017
DOI: http://doi.org/10.1007/s00122-017-2884-6
摘要: Plant height (PH) is a complex trait in wheat (Triticum aestivum L.) that includes the spike length (SL) and the internode lengths from the first to the fifth internode, which are counted from the top and abbreviated as FIRITL, SECITL, THIITL, FOUITL, and FIFITL, respectively. This study identified eight putative additive quantitative trait loci (QTL) for PH. In addition, unconditional and conditional QTL mapping were used to analyze the temporal and spatial expression patterns of five stable QTL for PH. qPh-3A mainly regulated SL, FIRITL, and FIFITL to affect PH during the booting–heading stage (BS–HS); qPh-3D regulated all internode lengths to affect PH, especially during the BS–HS; before HS, qPh-4B mainly affected FIRITL, SECITL, THIITL, and FOUITL and qPh-5A.1 mainly affected SECITL, THIITL, and FOUITL to regulate PH; and qPh-6B mainly regulated FIRITL to affect the PH after the booting stage (BS). qPhdv-4B, a QTL for the response of PH to nitrogen stress, was stable and co-localized with qPh-4B. All five stable QTL, except for qPh-3A, were related to the 1000 kernel weight and yield per plant. Regions of qPh-3A, qPh-3D, qPh-4B, qPh-5A.1, and qPh-6B showed synteny to parts of rice chromosomes 1, 1, 3, 9, and 2, respectively. Based on comparative genomics analysis, Rht-B1b was cloned and mapped in the CI of qPh-4B. This report provides useful information for fine mapping of the stable QTL for PH and the genetic improvement of wheat plant type.
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Characterization of the temporal and spatial expression of wheat (Triticum aestivum L.) plant height
农业资源研究中心 辅仁网/2017-07-23
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