普通野生稻稻米加工品质和外观品质性状QTL定位

被引:24
作者
刘家富 [1 ]
奎丽梅 [2 ]
朱作峰 [2 ]
谭禄宾 [2 ]
王桂娟 [2 ]
黎其万 [1 ]
束继红 [1 ]
孙传清 [2 ]
机构
[1] 云南省农业科学院
[2] 中国农业大学植物遗传育种系,农业生物技术国家重点实验室,农业部农作物基因组学与遗传改良重点开放实验室,北京市作物遗传改良重点实验室
关键词
普通野生稻; 稻米; 加工品质; 外观品质; QTL定位;
D O I
暂无
中图分类号
Q943.2 [植物基因工程]; S511.9 [野生稻];
学科分类号
071007 ; 090102 ; 0901 ;
摘要
利用以籼稻(Oryza sativa ssp.indica)品种特青为遗传背景的云南元江普通野生稻(O.rufipogon Griff.)(简称元江普野)渗入系为材料,采用单标记回归分析和渗入片段叠代法,对出糙率、整精米率、垩白粒率、垩白度、长宽比等5个品质性状的QTL进行了分析,初步定位了16个QTL,有10个QTL来自野生稻的等位基因能改良群体的品质性状。在第5染色体RM598附近检测到了同时影响长宽比和垩白粒率的QTL,来自野生稻的等位基因能增加长宽比和降低垩白粒率,贡献率也较高。在第8染色体RM152附近检测到降低垩白粒率和垩白度的QTL,其贡献率分别为14%和9%。研究结果不仅为品质性状分子标记辅助选择提供参考,而且充分显示了利用野生稻的优异基因改良栽培稻品质性状的巨大潜力。
引用
收藏
页码:90 / 96
页数:7
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