选用丹东农业科学院选育的10个自交系及国内3个主要自交系，采用NCⅡ(不完全双列杂交)设计的原理和方法对组配的40个杂交种进行配合力分析，并估算其遗传参数。结果表明：丹787、C8645、DH34和丹598是一般配合力(GCA)效应值表现优良的自交系，筛选出高产组合丹859×DH34、丹787×丹598、丹787×昌7-2。穗位高、雄穗分枝数、穗上叶数、穗上叶距等性状可以进行早代选择，产量、第1叶叶长等性状不宜早代选择。

Ten inbred lines that selected by Dandong academic of agricultural sciences and other 3 main inbred lines were made in the study. This paper carried on the combining ability analysis of the 13 inbred lines allocate with 40 hybrids by NCⅡ method, and estimated the genetic parameters. The results showed that inbred lines of Dan787, C8645, DH34 and Dan598 had the higher general combining ability which crossed high yield hybrids of Dan859×DH34, Dan787×Dan598, Dan787×chang7-2. The agronomic traits of ear height, tassel branch numbers, leaf distance uppermost ear and leaf distance uppermost ear should be selected earlier, but yield, the first leaf length should be selected later

辽宁省“十一五”玉米育种科技攻关“玉米高产、优质、专用、多抗新品种选育”项目(2006201001)