高粱生育期遗传模型测验

采用增广ＮＣⅡ设计，对高粱生育期遗传模型进行了测验。结果表明，高粱生育期的遗传不符合加性──显性模型，基因的显性效应不明显．但上位性效应却比较明显；控制生育期的增效、减效等位基因在不育系和恢复系的分配比率，有极显著差异；生育期的遗传．增效等位基因即晚熟基因为显性．且这种显性为超显性。

GENETIC MODEL TEST OF GROWING PERIOD OF SORGHUM

The genetic model test of growing period of sorghum was Carried out by Augmented NC Ⅱ design.The results show the heredity of growing period of sorghum don not agree with additive──dominant model,and the dominant effect of gene is not significant. The ratio of distribution of the allele that control growing period is significantly different between sterile line and restoring line. For the heredity of growing period,the additive effect allele,a lateliness mature gene,is dominant,and the dominance is epistatic dominance.