Assisted Selecting Parents of Hybrid Combination Based on SSR Polymorphism
- 生命科学－已发表论文 
[中文文摘]本研究利用 6 0对SSR引物对籼稻品种佳辐占与 6个候选亲本品种进行相互之间的多态性分析。结果表明 :佳辐占与明恢 6 3之间的多态性程度最高 ,达到 2 2 7% ;其次是与明恢 86之间的多态性程度 ,达 19 6 % ,而与其他品种的多态性程度较低。多态性程度高的品种间的杂交组合 ,其杂种优势明显高于多态性程度低的品种间的组合。初步表明 ,根据SSR多态性程度的高低选配亲本 ,其配制杂交组合可以获得较高的杂种优势。[英文文摘]In this research, the authors attempt to select the parents for hybrid combinat ion by using SSR polymorphism. Indica rices, Jiafuzhan and other six candidate parents, were employed to be detected and analyzed DNA polymorphism by using sixty pairs of SSR primers. It showed that the degree of polymorphism between Jianfuzhan and Ming hui 63 was highest , it reaches 22.7%, and of that between Jianfuzhan and Minghui 86 ranks the second, it reaches 19.6% . it is lower of the degree of polymorphism between Jiafuzhan and other 4 variet ies. The heterosis of the combinat ion w as according to the degree of polymorphism between parents, the higher polymorphic degree betw een parent s the hig her heterosis the combinat ions. The results showed that it was feasible to select the parents of hybrid combinat ions based on SSR polymorphism for evaluat ing the heterosis of the hybrid combinations.