【摘要】 利用黄淮海地区分属于不同杂种优势群的21个普通玉米自交系为母本,以引进中国农业大学选育的8个ALEXHO高油玉米自交系为父本,采用NCⅡ遗传设计,测定并分析了高油玉米杂交当代单株产量和籽粒油分含量的配合力。结果表明:GY246A的单株产量和籽粒油分含量的GCA均为极显著最大正值,具有较高的直接组配价值,其次为GY246B和GY220。8085泰、246、P138、8622和87-1单株产量和籽粒油分含量的GCA均为极显著正值或显著正值,应进一步利用这些自交系与ALEXHO高油玉米自交系较强的杂种优势。246×GY246B、Q1261×GY246A和478×GY956在单株产量和油分含量的SCA均较高,其中246×GY246B单株产量居首位,较对照增产25.96%,油分含量为6.6%,具有较高的生产利用价值。更多还原

【Abstract】 Based on NCⅡdesign,168 crosses were made from 21 normal corn inbreds from different heterotic groups in Huanghuaihai Region as female parents and 8 ALEXHO high oil corn inbreds from China Agricultural University as male parents,which were grown in a randomized complete-block design experiment with three replications,and the GCA and SCA of per-plant yield and kernel oil content of F1 Embryo were analyzed.The results were as follows:the GCA of per-plant yield and kernel oil content for GY246A were significant at 0.01 level,showing the direct utilization value in breeding,followed by GY246B and GY220.The GCA of per-plant yield and kernel oil content for 8085tai,246,P138,8622 and 87-1 were significant at 0.01 level or 0.05 level,so their heterosis could also be used in breeding.The SCA of per-plant yield and kernel oil content in crosses 246×GY246B,Q1261×GY246A and 478×GY956 were higher than in other crosses.The per-plant yield of 246×GY246B was the highest among all the crosses,25.96% higher than CK hybrid,and its oil content was 6.6%,presenting a great utilization value in corn production.更多还原