【摘要】 <正> 生育期是高粱的主要经济性状之一,也是高粱育种目标中的一项重要内容。开展高粱生育期遗传研究可有效地指导育种计划的制订与实施。有关高粱生育期遗传机制的报道较多。J.R.Quinby等（1945）曾用迈罗高粱鉴别出三个熟性基因位点Ma₁、Ma₂、Ma₃,后来（1961）更多还原

【Abstract】 The growth days of the progenies was controlled by their parents, and in the same level with the means of their parents. The growth days of the progeny would seperate widely if their parents is much different in genotype and growth stage. The heterosis of growth days is lower, and most of them are negative.The broad heritability of growth days is very higher than ear stem, stem diameter and ear length. The growth days decline to stable in F₅ in ordinary crosses,but it will not be in the crosses of wild race × culture race and Chinese Sorghum × foreign sorghum. Flower date of F₅ is more variable than the parents. The early sorghum crosses which have a much different genotype appears a obviously early maturity. The growth days of progeniess is significantly positive correlation with individual parent.更多还原