The Combining Ability Analysis on Yield Characters for Part High Oil Maize Inbred Lines

The North Carolina Ⅱ(NCⅡ) mating design was used to evaluate the combining ability on yield characters,in which 15 high oil maize inbred lines from China Agricultural University were tested using 6 local normal maize inbred lines as the common testers.The result indicated that the inbreds BY812、BY815、GY798 and GY237 had higher general combiner ability in most yield related character.The inbreds GY302、GY923 and GY1007 had lower general combiner ability in most yield related character.Total effect value of combination ability about yield per plant for most high oil maize inbred lines crossed with 81162 and crossed with 444 were both positive values.That for most high oil maize inbred lines crossed with 434 and those crossed with red maize were both negative values.That for BY832 crossed with 6 testers and BY815 crossed with testers were both positive values.That for GY302、GY462、GY923 and BY807 crossed with 6 testers were all negative values.those inbreds couldn't be maked hybrids efficiently in Heilongjiang Province.It need to discover new heterotic patter.