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[目的]分析云南主栽甘蓝型油菜品种间遗传距离与杂种优势的相关性。[方法]利用SSR分子标记技术对云南8个主栽甘蓝型油菜品种间的遗传距离进行分析,并探讨其与田间表现的杂种优势的相关性。[结果]杂交亲本间遗传距离与杂种优势存在一定的相关性,但并不显著。[结论]分子标记技术用于油菜杂种优势预测从而筛选亲本存在一定的困难。
[Objective] The research aimed to analyze the correlation between genetic distance and heterosis in main rapeseed varieties in Yunnan. [Method] The genetic distance among eight main cultivars of Brassica napus in Yunnan was analyzed by using SSR molecular markers and the correlation between them and heterosis displayed in field. [Result] There was some correlation between genetic distance and heterosis in hybrid parents, but not significant. [Conclusion] The molecular marker technique was used to predict the heterosis of rapeseed so that it was difficult to screen the parents.