Study on Application Potential of Innovative Maize Inbred Lines

By using the 20 innovative inbred lines and 3 inbred lines of maize,60 crosses were made according to incomplete diallel crosses of 20×3 to study on general combining ability and its genetic parameters of 9 traits,such as grain yield etc...The result indicated that the inbred lines of Taixi 1,Taixi 7 and Taixi 8 with good comprehensive character,so it can breed better hybrid cultivar as a parent.The heterosis expression of all trait studied are mainly controlled by additive gene action but the non-additive gene action are important in plant height,Yield per trial plot,plant height,ear position and grain number row those are obviously influenced by environment.In maize breeding program,ear length,cob diameter and weight per 100 grain should be selected in early generation,but grain yield,plant height and grain number row should be selected in later generation.