【摘要】 以261个小麦品种(系)组成原始群体,利用其多态性分子标记信息,通过模拟核心种质抽提的方法精选了100个品种(系),对入选种质进行了群体遗传结构分析,并对属于3个亚群100个品种(系)的PPO基因的等位变异进行了检测,分析发现100个小麦品种(系)中Ppo-A1 a、Ppo-A1 b、Ppo-D1 a和Ppo-D1 b的基因频率分别为43%、57%、72%、28%,为小麦PPO活性的分子标记辅助选择(MAS)提供了基础资料。更多还原

【Abstract】 To obtain desirable hybrid parents for improving the quality of wheat flour color,261 wheat cultivar lines from our country′s gene pool were selected as a original population and their genetic polymorphism were analyzed based on molecular markers in wheat genome.A proposed core germplasm group of wheat lines was constructed which included 100 cultivar lines,the proposed core germplasm group was divided into three sub-groups by population genetic structure analysis.The allele diversity at two PPO gene loci were checked in 100 lines of the proposed core gernplasm group,the results showed that the frequencies of Ppo-A1a 、Ppo-A1b、Ppo-D1a and Ppo-D1b were 43%、57%、72%、and 28% in the 100 cultivars lines respectively.The data has supplied a basic information for improvement of wheat PPO activity in the marker-assisted selection.更多还原