热带亚热带玉米自交系与温带玉米杂种优势的分析

Analysis of hybrid advantages between maizeinbred line in tropical and sub-tropical zones and maize in temperate zones

选用gc1086、gc1087和gc1088 3个热带亚热带群体与1085、1095、1096、1097、1101和1102共6个中国温带骨干自交系进行不完全双列杂交试验,并对8个主要农艺性状的SCA进行了分析.结果表明:植株性状特殊配合力总体表现优良的组合为1781、1778、1779、1768、1766.产量性状表现较好的组合有1794、1792、1787和1777.来自母本gc1087的组合可以选育出高产玉米品系;来自母本gc1088的组合可以选育出饲料玉米品系.

Three tropical population, gc1086, gc1087, gc1088, and six semi-tropical population,1085, 1095, 1096, 1097, 1101, 1102 made up combinations by incomplete diallel crossing, eight agriculture traits were analysed. The results showed that plant traits of 1781,1778, 1779, 1768, 1766 were higher in SCA, on the whole, and the yield trait of 1794, 1792, 1787, 1777 was higher in SAC. The results also showed that high yield lines can be selected from the combinations, gc1087, of female parents, and forage maize lines can be selected from the combinations, gc1088, of female parents.