RAPD标记预测油菜杂种优势的研究

A Study on Predict of Heterosis for Brassica napus by RAPD

用杂交油菜黔油12号的父母本及杂交种作材料,对亲本和杂交种的产量、经济性状考察和DNA多态性标记,进行杂种优势的研究和比较。结果表明:产量、经济性状中亲优势、超亲优势、杂种优势指数与DNA多态性预测杂种优势的中亲优势、超亲优势、杂种优势指数结果趋势基本一致。笔者认为大多育种者在一定时期内,一般以核心亲本或骨干(系)亲本作为育种的主要材料,利用DNA多态性表达亲本的遗传差异的显著特点,提出以核心亲本建立1个DNA多态性图谱库,不断补充新材料和新引物的DNA多态性结果,用分子标记预测杂种优势值得进一步研究和探讨。

The study is comparing heterosis of the yield and economic characteristics of Qianyou No. 12 with the heterosis of its DNA polymorphism. The results showed that the MP（ Mid-parent heterosis）, the HP（ overparent heterosis） and the heterosis index of yield and economic characteristics of the Qianyou No. 12 is consistent with the heterosis predicted by PCR. In a certain period time, most researchers take the core parents as the main breeding material. Using the remarkable features of genetic differences expressed by DNA polymorphism to establish a DNA genome map database, and continually adding DNA polymorphism genome results of new material and new primer, the work of heterosis predicted by RAPD should be studied further.