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草业学报  2010 

水稻饲料营养含量的QTL定位分析

, PP. 142-148

Keywords: 水稻,饲料,营养含量,F2群体,QTL

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Abstract:

应用85个SSR标记,对普通野生稻与粳稻台中65为亲本建立的F2群体进行基因检测,构建了覆盖水稻基因组12条染色体的SSR分子标记连锁图,采用Mapmaker/QTL1.0统计软件对决定水稻饲用营养价值的粗蛋白、粗纤维、粗脂肪、粗灰分、硅酸和可溶性糖含量的基因座位进行了定位分析。结果定位了影响粗蛋白含量的3个QTLs,影响粗脂肪含量的1个QTL,影响可溶性糖含量的3个QTLs,影响硅酸含量的2个QTLs,这9个QTLs分别位于第1,2,4,7,8,9,10和11染色体上。其中主效QTL4个,分别是影响粗脂肪含量的qCEE-1(贡献率56.8%),影响可溶性糖含量的qCWSC-4(贡献率23.1%)和qCWSC-7(贡献率25.0%),影响硅酸含量的qCS-9(贡献率15.9%),其余5个为微效QTL。没有检测到影响粗纤维含量和粗灰分含量的QTL。

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