数字农科院2.0

陆地棉重组近交系"中G6" QTL的初步定位

文献类型: 中文期刊

作者: 张先亮;王坤波;宋国立;刘方;黎绍惠;王春英;张香娣;王玉红

作者机构:

关键词: 陆地棉;重组近交系;QTL;SSR

期刊名称:棉花学报

ISSN: 1002-7807

年卷期: 2008 年 20 卷 3 期

页码: 192-197

收录情况: CSCD

摘要: 利用2个陆地棉种质材料爱字棉1517与德州047构建了重组近交系.田间调查显示,两亲本田间性状差异多数达到显著或极显著,群体性状数据完全符合受多位点控制的数量性状遗传的特征.分子标记多态性筛选结果表明,两亲本亲缘关系相对较近,利用SSR构建高密度遗传连锁图有一定困难,但对于所定位的QTL位点,其准确性将会有一定程度提高.试验构建了一张包括51个标记分为15个连锁群的遗传连锁图,总长504.05 cM,覆盖棉花基因组总长度的10.08%.利用两年田间数据检测到QTL位点15个,其中生育期性状3个,纤维品质性状7个,产量性状5个.与标记图距在1 cM以内的QTL位点7个,这将对分子标记辅助育种具有一定的参考价值.

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