摘要
通过对具有太谷核不育基因的小麦异交原始群体和二向选择后的部分子群体进行薄层等电聚焦电泳分析，结果如下：在选择四代中，不同选择方向的群体之间已显示出一定的子群体分化，异交群体内有相当高的遗传变异水平，多态位点百分率、位点的等位基因平均数和平均杂合度分别为１００％、３２９０７和０５７６３．经Ｆ检验，六个子群体的平均杂合度及位点的等位基因平均数均无显著变化．群体内具有很高的多态水平，比较六个子群体，只有４０２％的遗传多样性发生于群体之间，而另有９５９８％的遗传多样性存在于子群体内部．根据聚类分析结果，以Ｌ４子群体的分化程度最高．可见选择是有效的．
Genetic diversity of seven isozyme loci was studies by thin layer polyacrylamide gel isoelectrofocusing in outbreeding populations of winter wheat. Using the male sterile gene Ta1 the outbreeding population of winter wheat were formed, and five cycles of disruptive selection for four characters was analyzed. The result suggested strategies for the population improvement of wheat. The cluster analysis showed that selection was effective.
基金
国家自然科学基金
