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我国小麦主推品种穗发芽抗性鉴定及相关分子标记的评价

DOI: 10.7668/hbnxb.2010.04.002, PP. 6-11

Keywords: 小麦,穗发芽,分子标记

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Abstract:

为了培育抗穗发芽品种,对我国10个小麦主产省份的75个品种进行了穗发芽抗性鉴定,同时利用3个分子标记Vp1B3、Xbarc310和Barc294对上述品种进行了分子检测.结果表明,不同品种间穗发芽抗性存在明显差异.Vp1基因的等位变异与穗发芽抗性关系不密切,Vp1B3标记难以用于品种的穗发芽抗性筛选.主效QTL(QPhs-3AS)与种子休眠关系密切,Xbarc310和Barc294可作为穗发芽抗性选择的重要参考,且Barc294较Xbarc310的选择效果好.上述结果为抗穗发芽小麦品种的改良和推广提供了重要信息.

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