花生亲本材料遗传评价研究

选用8个亲本按NCⅡ配制16个组合,研究了F1-F4:5代产量性状和F4种子品质性状的遗传变异情况,测定了F4:5384个株系、56个品系的产量。结果表明:①各性状的一般配合力变异大于特殊配合力变异,杂种均数的遗传分量中以加性效应为主,这与前人研究结果一致。②亲本产量配合力在杂种世代间表现不一致,早代测定以F3较为适宜。③亲本性状值与一般配合力效应呈正相关,表明亲本性状优劣对杂种后代表现有一定影响。④优良品系的分布很集中,主要分布在母本963-4-1和父本88-1202的序列组合中,显示出优良亲本在育种效果上的突出优势。⑤963-4-1和88-1202是很好的高产育种亲本,904-79和佐治亚的育种利用价值也较高。

Genetic Evaluation of Parental Material in Peanut

Sixteen combinations crossed by NC II design with eight peanut parents.The variations of five yield traits in F1,F2,F3,F4,and F4:5 generations and two qualitative traits of F4 seed were studied,and the yield experiment of 384 F4:5 and 56 F4:6 lines were conducted.The results showed that: 1) the general combining ability(GCA) variations were bigger than the special combining ability(SCA) variation in the seven traits,and therefore the additional effect predominated in the traits;2) GCAs of parent among generations were inconsistent and GCA test with F3 was more appropriate in earlier generation;3) the phenotypic value and GCA effect of parents was positive relative,so the parental trait would influence the performance of descendant;4) the high yield lines mainly derived from the serial combinations crossed with 963-4-1 or 88-1202;5) two high yielding parents,963-4-1 and 88-1202,were evaluated in the investigation,as well as 904-79 and Georgia had a higher use value in peanut breeding.