烤烟自育DH系主要农艺性状的配合力分析

Analysis of Combining Ability for Main Agricultural Characters of Self-breeding Tobacco Double Haploid Line

利用杂种优势是提高烤烟产量和改进品质的重要途径之一,配合力育种是杂种优势利用的主要育种手段之一。为了快速准确地预测F1杂种优势,促进强优势杂交组合的选育,采用NCⅡ遗传交配设计,用自育的GDH84、GDH88、GDH64、GDH02等4个烤烟DH系为父本,国外引进的K326、Va116、NC82、G-28、K730、Coker147等6个烤烟品种为母本,组配了24个杂交组合,进行了配合力分析。探讨了10个亲本和24个F1的一些主要性状的配合力效应,筛选出理想亲本和强优势组合,为烤烟杂交育种正确选用亲本提供依据。

Heterosis is one of the important approaches to increase tobacco yield and improve tobacco quality,and combining ability breeding is one of the main breeding methods for utilization of heterosis.To quickly and accurately predict the heterosis of F1 and to promote selecting good hybrid combinations with strong advantages,using NCⅡ genetic design method to analysis of combining ability of 24 hybrid combinations,which were crossed by four self-breeding tobacco double haploid lines（DH-line） GDH84,GDH88,GDH64 and GDH02 and six foreign introduced tobacco varieties K326,Va116,NC82,G-28,K730 and Coker147.The combining ability effects of some main characters of the 10 parents and 24 F1 were discussed to select the ideal combinations of parents and strong advantage and to provide references for correct selecting parents for hybrid breeding of tobacco.