作物学报 ›› 2018, Vol. 44 ›› Issue (01): 32-42.doi: 10.3724/SP.J.1006.2018.00032
方雅洁1,2,朱亚军2,3,吴志超2,陈凯2,3,申聪聪3,石英尧1,*,徐建龙2,3,4,*
FANG Ya-Jie1,2,ZHU Ya-Jun2,3,WU Zhi-Chao2,CHEN Kai2,3,SHEN Cong-Cong3,SHI Ying-Yao1,*,XU Jian-Long2,3,4,*
摘要:
以400份籼稻变异丰富的种质资源材料在2个环境下考察外观与加工品质性状表型,利用404K高密度SNP基因型进行全基因组关联分析,挖掘影响外观与加工品质性状的重要位点。结果表明,粒型和籼米的外观和加工品质密切相关,垩白性状降低稻米的精米率和整精米率,除粒型外,籼稻的外观和加工品质明显受到环境影响。全基因组关联分析共鉴定到39个QTL,其中17个为新位点,6个新位点(qMRR9、qGL2、qGL10、qGW1、qGLWR1和qGLWR2.1)在2个环境下均被检测到,暗示这6个位点在水稻外观与加工品质上可能是不依赖于环境稳定表达的QTL。此外,21个控制稻米外观品质的位点很可能具一因多效。结合前人研究结果,我们推论qSW5、GSE5和GS3在籼稻外观和加工品质性状上扮演着关键性角色。研究结果为克隆新的外观与加工品质基因以及通过分子手段加速培育优质高产籼稻新品种提供了指导信息。
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