甘蓝型油菜结实相关性状分析及QTL定位

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油菜是我国主要的油料作物,提高油菜籽产量和含油量以增加单位面积产油量是当前油菜育种的首要目标。本研究重点分析了甘蓝型油菜主花序不同部位种子数目和重量的差别。为度量这种差别,我们分上部和下部两个区段,重点对角果粒重和角果粒数进行分析,以此衡量基因型之间花序不同部位种子粒数和粒重形成可能的差异。利用加倍单倍体(DH)群体构建的图谱,对上述结实相关性状以及单株产量等13个性状进行了QTL定位分析,同时对蛋白质含量、含油量、总硫甙含量等3个品质相关性状也分上下段进行了QTL定位和分析,主要结果如下:
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