采用世代平均数分析的多元回归法，对HR195抽穗期的优势表现及基因效应进行了分析，同时探讨了HR195对杂交一代抽穗期的作用及其遗传机理。结果表明，HR195抽穗期表现为迟熟不完全显性，并受到离散早熟基因的影响。在同早熟亲本杂交时，其杂交一代抽穗期以加性效应占优势，同时受到较大的显性效应和上位性效应作用，使F1略偏向晚熟亲本。而同迟熟亲本杂交，F1代抽穗期以显性效应占绝对优势，同时受到一定的加性效应和上位性效应的影响，使F1代表现超早熟现象。利用HR195与早、迟熟不育系组配，其F1代将早熟性和丰产性较好地结合了起来，对建立高产高效农业有重要价值。 Based on the multiple regression analysis of average generations, the dominant performance and gene effect of heading date of HR195 were analyzed. The effect of HR195 on the heading date of hybrid generation and its genetic mechanism were also discussed. The results showed that the heading date of HR195 was immature and incompletely dominant, and was affected by the gene of discrete precocious puberty. When crossed with the early parents, the heading date of hybrid generation was dominated by additive effect, and at the same time, it was affected by larger dominant effect and epistatic effect, which made F1 slightly biased late-maturing parents. However, with the late-maturing parents, the F1 generation of heading date dominated the dominant effect, and at the same time, it was affected by some additive and epistatic effects, making F1 represent the over-premature phenomenon. The combination of HR195 with early and late maturing male sterile lines, F1 generation combines early maturity and high yield, which is of great value to establishing high yield and high efficiency agriculture.