Abstract: Six generations of different ear axis color maize inbred lines Zi330 and PH4CV were used in thestudy， ear axis color was classed by eyeballing． P1 ， P2， F1 ， F2， B 1 and B 2 were used to study the inheritance of maizeear axis color with joint analysis of multiple generations． The results were as follows: maize ear axis color trait presented “ w“ distribution in the B1 and F2 population， and partial normal distribution in the B 1 populations， indicatingthat the trait was controlled by few major genes; the inheritance of maize ear axis color trait fitted the model of additive-dominance-epitasis two pairs of major genes ( B-1 Model) ; the additive effects of the major genes a and b were0． 72 and － 0． 82 respectively which showed a high breeding value; the dominant effects were 0． 745 and 0． 13 respectively， it expressed gene a showed dominant to gene b; the epistemic effect of dominant dominant of two pair ofmajor genes was － 0． 715， it improved that dominant effects played a major role; Signify inheritabilities of majorgenes reached 94% ． All these provided a theoretical basis for maize breeding．

Key words: Maize(Zea mays L． ) , Ear axis color, Genetic

CLC Number: 

• S513