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甘蓝型油菜(Brassica napus L.)是常异花授粉作物。大量研究和实践表明,利用其杂种优势比普通品种一般增产20—30％,甚至更高。油菜杂种优势表现在F_1代的综合经济性状上,而杂种优势育种的关键问题是亲本选配,在母本相对固定情况下,主要是选配父本。因此,研究亲子间相关对指导杂种组合亲(父)本选配具有重要意义。本研究利用3个雄性不育系和7个父本设计了不完全双列杂交试验,分析了杂种一代优势及其与父本间在一些主要经济性状上的相关性。
Brassica napus L. is an evergreen pollination crop. A lot of research and practice show that the use of its heterosis than the average general increase of 20-30%, even higher. The heterosis of rape showed in the comprehensive economic traits of F_1 generation, while the key problem of heterosis breeding was the matching of parents. In the case of relatively fixed female parent, it was mainly the matching father. Therefore, it is of great significance to study the relationship between parents and children to guide the parent-father combination. In this study, three male sterile lines and seven male parents were used to design an incomplete diallel cross test to analyze the heterosis and its correlation with some major economic traits among male parents.