9个糯玉米自．交系主要品质性状的配合力效应及遗传参数分析

摘要

以9个糯质自交系为试材，以田间试验和实验室测定相结合，采用不完全双列杂交，对糯玉米6个鲜食品质性状的一般配合力（GCA）、特殊配合力（SCA）和遗传参数进行了研究。结果表明：各性状GCA、SCA差异均达到极显著水平；感官品质主要由显性基因决定，其余性状受基因的加性效应影响大，但在程度上存在差异。在鲜食品质性状方面，多数性状上一般配合力表现较高的自交系有通366、通系5、通361、衡白522；特殊配合力在多数性状上表现较高的组合有（通366×通系5）、（衡白522×通系5）、（通366×通361）、（通366×新红361）、（T2×通361）。%Nine inbred lines of waxy corn were used as test materials in NC II mating design to study the general combining ability （GCA）, specific combining ability （SCA） and genetic parameters of 6 table quality traits of waxy com. The results show that the differences between GCA and SCA of all traits were very significant. The sense quality was controlled mainly by non-additive gene while there were both additive gene and non-additive gene actions on the other traits. Tong 366, Tong 5, Tong 361 and Hengbai 522, these inbred lines were comparatively high in GCA of most traits, while Tong 366 ×Tong 5, Hengbai 522×Tong 5, Tong 366×Tong 361, Tong 366×Xianghong 361 and T2×Tong 361, these combinations were rather high in SCA of most traits.