Identification and characterization of a high kernel weight mutant induced by gamma radiation in wheat (Triticum aestivum L.)

文献类型: 外文期刊

第一作者: Cheng, Xuejiao

作者: Cheng, Xuejiao;Chai, Lingling;Chen, Zhaoyan;Xu, Lu;Zhai, Huijie;Peng, Huiru;Yao, Yingyin;You, Mingshan;Sun, Qixin;Ni, Zhongfu;Cheng, Xuejiao;Chai, Lingling;Chen, Zhaoyan;Xu, Lu;Zhai, Huijie;Peng, Huiru;Yao, Yingyin;You, Mingshan;Sun, Qixin;Ni, Zhongfu;Cheng, Xuejiao;Chai, Lingling;Chen, Zhaoyan;Xu, Lu;Zhai, Huijie;Peng, Huiru;Yao, Yingyin;You, Mingshan;Sun, Qixin;Ni, Zhongfu;Cheng, Xuejiao;Chai, Lingling;Chen, Zhaoyan;Xu, Lu;Zhai, Huijie;Peng, Huiru;Yao, Yingyin;You, Mingshan;Sun, Qixin;Ni, Zhongfu;Cheng, Xuejiao;Chai, Lingling;Chen, Zhaoyan;Xu, Lu;Zhai, Huijie;Peng, Huiru;Yao, Yingyin;You, Mingshan;Sun, Qixin;Ni, Zhongfu;Zhao, Aiju

作者机构:

关键词: Wheat;Kernel weight;Mutant;SSR marker;QTL

期刊名称:BMC GENETICS ( 影响因子:2.797; 五年影响因子:3.263 )

ISSN: 1471-2156

年卷期: 2015 年 16 卷

页码:

收录情况: SCI

摘要: Background: Inducing mutations are considered to be an effective way to create novel genetic variations and hence novel agronomical traits in wheat. This study was conducted to assess the genetic differences between Shi4185 and its mutant line Fu4185, produced by gamma radiation with larger grain, and to identify quantitative trait loci (QTLs) for thousand kernel weight (TKW). Results: Phenotypic analysis revealed that the TKW of Fu4185 was much higher than that of Shi4185 under five different environments. At the genomic level, 110 of 2019 (5.4 %) simple sequence repeats (SSR) markers showed polymorphism between Shi4185 and Fu4185. Notably, 30 % (33 out of 110) polymorphic SSR markers were located on the D-genome, which was higher than the percentage of polymorphisms among natural allohexaploid wheat genotypes, indicating that mutations induced by gamma radiation could be a potential resource to enrich the genetic diversity of wheat D-genome. Moreover, one QTL, QTkw.cau-5D, located on chromosome 5DL, with Fu4185 contributing favorable alleles, was detected under different environments, especially under high temperature conditions. Conclusions: QTkw.cau-5D is an environmental stable QTL, which may be a desired target for genetic improvement of wheat kernel weight.

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