Analysis of Combining Ability of Yield of Fractional Inbred Line of Main Corn Varieties in Inner Mongolia and Study on Their Genetic Relationship

doi:10.7668/hbnxb.2011.02.026

Abstract

Abstract: 200 hybrid corn combinations had been gained by the design of uncompleted diallel crossing NC II,aecording to 5 standard testing varieties(B73,M017,Dan340,Huangza04 and Ye478),which represented main hybrid dominant groups in the north of China,and 40 inbred lines of main corn varieties in Inner Mongolia.Based on plan· ted verifications,the yield combining abilit and yields of F1 had been analyzed,and the genetic relationship had been discussed in this study,either.Experiments show that internal population(DOM),A population(Reid)and population(non-Reid)are the main inbred lines in the Inner Mongolia；the higher GCA effect exist in M3401,Ba816,MZY, K12,and M9271,etc,11 inbred lines,which are better breeding materials.Lan Langpingsitou,M9271 Lanpingsitou and Reid Lan are the main modes of hetemsis.In the experiments to test heterosis of these 200 combinations.it is more possible to gain fine varieties or combinations from M3401×Huangza04,K12×M017,etc seven combinations,the SCA values and yields are higher.

Key words: Maize, Inbred lines, Combining ability, Genetic relationship

CLC Number:

S13.03

SUN Feng-cheng, FENG Yong, SU Er-hu, ZHANG Lai-hou, ZHAO Rui-xia, LIU Zhi-xiong, SHI Hai-bo. Analysis of Combining Ability of Yield of Fractional Inbred Line of Main Corn Varieties in Inner Mongolia and Study on Their Genetic Relationship[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2011, 26(2): 119-123. doi: 10.7668/hbnxb.2011.02.026.

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