Study on Application Potential of 5 Maize Genetic Improved Lines
Yang WeiGuang · Jilin Nongye Daxue xuebao · 2007
According to incomplete diallelcross,30 crossing combinations were made between 5 fine maize inbred lines of genetic improvement from abroad maize materials and 6 domestic backbones of maize inbred lines in 5 major systems.An experiment with the augmented NC Ⅱ designs was conducted to investigate heterosis and combining ability in 9 major agricultural characteristics.The results showed that the general agricultural characteristics of Maize Inbred Lines of Genetic Improvement were outstanding.The advantage was commutative between abroad group and domestic Tangsipingtou group or Ludahonggu group.They could become a heterotic pattern.The value of heterosis and SCA and TCA of the combination that crossed with 8415 and J5918 were the highest among these combinations.It is a high-yield crossing combination.This result showed to improve the abroad germplasm by genetic means is an effective way to broaden Chinese corn germplasm base.