Analysis on Combining Ability of Major Characters in 12 Maize Inbred Lines

maize inbred lines used were crossed according to Griffing's method four, 66 single crosses were got complete random block design taken Analyzed on combining ability and hereditary parameter of 7 characters which are plant height , ear position , ear length ,ear diameter , ear rows , row grains , grain yield The result showed the general characters of inbred lines Gui99,Gui422,Gui517,GuiA200 were better They were fine inbred lines in hybrids were got Higher yield on these inbred lines were crossed General characters of inbred line Gui340 were worse , only after improved , can be utilized Some characters of the left lines were better , could be utilized by selection of parent in maize breeding The line Gui9804 had highest variance of SCA , inbred line GuiA200 , Gui422 , Gui517 had also higher variance of SCA These inbred lines may be obtain high yield crosses