本文报道了梨杂交后代叶、花和抗病性等的遗传现象。结果表明,杂种群体叶面积表现为连续变异,亲子代间叶面积大小有密切相关,杂种叶面积有趋小的遗传倾向。杂种花序上平均花朵数有趋多的遗传倾向。杂种花序分叉性状也倾向于亲本。亲本座果率高低对后代有明显效应,杂种平均座果率有偏低的遗传趋势。亲本的抗病程度对杂种后代也有明显影响。 This article reports on the genetic phenomena such as leaf, flower and disease resistance in the hybrids of pear. The results showed that the leaf area of ​​the hybrid population showed continuous variation, the leaf area size was closely related between parents and offspring, and the leaf area of ​​hybrids tended to decrease. The average number of flowers on the hybrid inflorescence has more genetic predisposition. Hybrid flower bifurcation traits also tend to parents. The fruit rate of the parents had obvious effect on the offspring, the average fruit rate of the hybrids had a low genetic tendency. The disease resistance of the parents also had a significant effect on the offspring of hybrids.