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用以农大139为共同亲本的14个杂交组合的F_1及相应亲本的资料,进行了同亲回归(c.p.r.)分析。文中简述了c.p.r.法的基本原理,并估算了F_1代抽穗期、株高、千粒重及单株粒重等8个性状的c.p.r.系数、配合力及遗传力等遗传参数。 结合试验结果,讨论了有关亲本选配及组合淘汰等问题。
The data of F_1 and corresponding parents from 14 cross combinations of Nongda 139 were used for cousin regression (c.p.r.) analysis. In this paper, the basic principle of c.p.r. method was briefly described. The genetic parameters such as c.p.r. coefficient, combining ability and heritability of F_1 generation heading date, plant height, 1000-grain weight and grain weight per plant were estimated. Combined with the results of the experiment, the issues of matching and elimination of parents were discussed.