抗虫棉与早熟陆地棉品种间产量及纤维品质性状的配合力分析

摘要

用5个早熟陆地棉品种作母本,3个抗虫棉品种作父本,按照不完全双列杂交设计(NCⅡ设计)组配15个杂交组合.对亲本及杂交组合的产量和纤维品质共11个性状进行配合力分析.结果表明,单株铃数、衣分、纤维长度、比强度、马克隆值和纤维伸长率主要受基因加性效应控制,籽棉产量和皮棉产量主要受基因非加性效应影响.新陆早45号是突出的高衣分丰产亲本,新陆早48号是结铃性较好的丰产亲本,72-72是优良的抗虫棉亲本,组合新陆早48号×111-43和新陆早42号×N78在综合农艺性状上优势明显,但纤维品质相对而言没有明显改良.%In this study, 15 crosses were made between five non-Bt precocious upland cotton as female and three Bt cotton varieties as male with the incomplete diallel cross design(NC Ⅱ design) ,the combining ability of 11 traits related to yield and main fiber quality of Fi were analyzed. The results indicated that boll number per plant , lint percentage,fiber length , fiber strength,fiber elongation rate and micronaire value were mainly controlled by gene additive effect, while seed cotton yield and lint yield were affected by non-additive effect respectively. Xinluzao 45 and Xinluzao 48 were the parents with high lint percentage and high boll-setting respectively, and line 72-72 was an excellent cotton with insect-resistance. Among the 15 combinations, Xinluzao 48 ×111-43 and Xinluzao 42×N78 showed apparent advantage in many agronomic traits. However, the fiber quality was less improved through heterosis.