13个玉米自交系配合力及遗传参数分析

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，采用按NC11（不完全双列杂交）设计的原理和方法对组配40个杂交种进行配合力分析，并估算其遗传参数。结果表明：DY-7、DY-1、DF．2和DF-1是GCA效应值表现优良的自交系。并筛选出高产组合DY．5×DF-2、DY-7×DF-1、DY-7×昌7—2；穗长、穗粗、穗行数、百粒重、株高、穗位等性状可以进行早代选择。产量、出籽率、行粒数，不宜早代选择。

Analysis of Combining Ability and Genetic Parameters on 13 Maize Inbred Lines

10 Inbred lines that selected by Dandong Academic of Agricultural Sciences and other 3 main inbred lines were made in the study. The 13 inbred lines were designed by P1 × P2 uncompleted diallel cross of NC Ⅱ method to study on general combining ability and genetic parameters. The results showed that inbred lines of DY-7, DY -1,DF-2 and DF-1 had the higher general combining ability which crossed high yield hybrids of DY-5 ~ DF-2, DY-7 ~ DF-1, DF-7 ~ chang7-2. The agronomic traits of ear length, ear diameter, rows per ear, 100-kernels weight, plant height, ear height should be selected earlier, but yield, shelling percentage and kernels per row should be selected later.