41份中晚熟欧洲玉米选系的配合力及杂种优势分析

Analysis of Main Characters and Heterosis of 41 Species of European Maize Germplasm

试验以东北农业大学利用17份欧洲玉米种质选育的41份中晚熟优良自交系为材料,以代表瑞德类群的自交系D1798Z和兰卡斯特类群的HCL645为测验种,采用NCII遗传交配设计组配82个杂交组合,分析产量配合力及杂种优势关系。结果表明,41份欧洲选系的单株产量GCA相对效应值为-20.95%~26.72%,20份材料的一般配合力表现为正效应。DNF26-7-1、DNF03-12-2、DNP03-7-1等28份选系偏向于瑞德类群,DNF06-1-1、DNPA4-5-3-2、DN-2-12-1等13份选系偏向于兰卡斯特类群,其杂种优势模式为瑞德×兰卡斯特。18个杂交组合单株产量对照优势为正值,选系DNF14-9-2、DNR11-10-1和DNF26-6-1与HCL645组配的3个组合对照优势表现突出,育种潜力较大。

Forty one mid-late maize inbred lines of European germplasm were bred by Maize Institute of North-east Agricultural University that were used to create 82 hybrid combinations with two testers belong to Lancasterand Reid groups respectively by NCII method. Aiming to provide the theoretical basis for application of these lines,the combining ability and heterosis were analyzed. The results showed that RGCA of yield per plant was between-20.95%-26.72% among 41 inbred lines and GCA of 20 lines was positive. Twenty eight lines belonged to Reid, thir-teen lines belonged to Lancaster, and the heteroticpattern of European middle-late maturing maize germplasm wasReid × Lancaster. The yield of 18 hybrid combinations had positive over control heterosis. The top three wereHCL645×F14-9-2, HCL645×R11-10-1, and HCL645×F26-6-1, which had over 10% control heterosis. DNF14-9-2, DNR11-10-1 and DNF26-6-1 had vast potential on maize breeding.