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７个类型１８个杂交组合桃杂种后代果实成熟期分布研究结果表明：桃果实早熟、中熟、晚熟分别由各自的主基因遗传控制，修饰基因有影响主基因的作用。不同组合类型中，中熟×早熟、中熟×中熟、中熟×晚熟、晚熟×中熟、晚熟×晚熟、晚熟×早熟的杂种后代出现早、中、晚熟单株的分离比率分别为４∶３∶１、０∶３∶１、０∶１∶１、０∶１∶１、０∶０∶１和１∶０∶１。桃成熟期的遗传力ｈ２＝０．８０，超亲遗传现象明显。在桃成熟期育种中，亲本之一为早熟品种的，其后代出现早熟单株的比率较高；亲本之一为中熟品种的，其后代出现中熟单株的比率较高；任何组合后代都有晚熟单株，晚熟×晚熟组合的，其后代出现晚熟单株的比率最高。
The results of maturity distribution of hybrid progenies of seven hybrids showed that peach fruit was premature, middle-maturing and late-maturing respectively controlled by its own major gene, and the modified gene had the effect on the main gene. Among the different combinations, the segregation rates of early, middle and late-maturing hybrids of middle-maturing, medium maturing, medium maturing, medium maturing × late maturing, late maturing × medium maturity, late maturing × late maturing, late maturing × maturing hybrid progenies were 4 : 3: 1, 0: 3: 1, 0: 1: 1, 0: 1: 1, 0: 0: 1 and 1: 0: 1. Peach mature heritability h2 = 0.80, super-progeny genetic phenomenon. In the peach maturity breeding, one of the parents was a precocious variety, and the rate of emergence of early-maturing individuals was higher in the offspring. One of the parents was a middle-maturing variety and the offspring had a higher rate of maturing plants. Both late-maturing plants, late-maturing × late-maturing combinations, the late generation of the highest rate of late-mature plants.