棉花陆海杂交F<,2>群体连锁图谱构建及纤维品质与产量性状QTL定位

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棉花产量、纤维品质等性状都属数量性状,由多个基因控制,易受环境影响,加上棉花纤维品质和产量间存在负连锁的关系,利用常规育种方法改良棉花纤维品质进展非常缓慢,很难满足生产和市场的需要。利用分子标记技术可以寻找与产量、纤维品质等性状QTL紧密连锁的标记,对产量、纤维品质进行标记辅助选择,可以大大提高选择效率,加快育种进程。本研究以陆地棉新陆早7号与海岛棉苏K202(品系)的杂交F2 ;3后代的183份家系为研究材料,以筛选出的多态性SSR引物对183份家系进行扩增,获得标记型数据,结合
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