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核农学报  2012 

小麦籽粒淀粉主要特性的QTL定位

, PP. 210-216

Keywords: 小麦,淀粉主要特性,QTL,定位

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Abstract:

为给分子标记辅助选择和小麦品质育种提供依据,以小麦杂交组合99G44×京771重组自交系群体(RIL)为材料,利用SSR分子标记技术,采用复合区间作图法对小麦籽粒淀粉主要特性进行了QTL分析。结果表明,检测出1个与总淀粉含量有关的显著加性效应QTSA.-6B,位于6B染色体,位点总贡献率为10.91%;检测出1个与支链淀粉含量有关的显著加性效应QAmp.-1B,位于1B染色体,位点的总贡献率为9.54%;检测出1个与直链淀粉含量有关的显著加性效应QAms.-6B,位于6B染色体,位点总贡献率为7.29%;检测出1个与支/直比有关的显著加性效应QAmp./Ams.-6B,位于6B染色体,位点的总贡献率为12.69%;检测出1个与高峰粘度有关的显著加性效应QPV-1B,位于1B染色体,位点的总贡献率为5.91%;检测出2个与崩解值有关的显著加性效应QBD-1B和QBD-2D,位于1B、2D染色体,位点总贡献率为12.95%;检测出1个与回生值有关的显著加性效应QSB-1B,位于1B染色体,位点总贡献率为6.99%;检测出1个与低谷粘度有关的显著加性效应QTV-3B,位于3B染色体,位点的总贡献率为5.16%;检测出1个与膨胀势有关的显著加性效应QSP-1B,位于1B染色体,位点总贡献率为7.02%。本研究定位的淀粉品质性状的标记可作为小麦品质分子育种的工具。

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