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本文通过对丹桂、晚红蜜、绿化９号、雪桃４种晚熟品种桃，及对照品种庆丰，给大久保桃授粉受精速度的研究，以及它们之间的杂交亲和力、花粉生活力等研究。试验表明：大久保接受４种晚熟桃及对照品种花粉后，受精时间集中在１４～３８ｈ内，而且，各供试父本品种与大久保杂交的受精时间，大都确定在６ｈ的范围内；在杂交亲和力方面发现：晚熟桃与中熟桃的杂交亲和力较低；各供试父本品种的花粉生活力与其和大久保的杂交亲和力，呈一定程度的正相关趋势。
In this paper, we studied the pollination and fertilization rate of Okubo peach, late Hongmei, greening 9, snow peach, and Qingfeng, a hybrid variety of peach cultivars, as well as their hybridization affinity and pollen viability . The results showed that when Okubo accepted four kinds of late-maturing peach and the control variety pollen, the fertilization time was concentrated within 14-38h, and the fertilization time of the hybrids of each tested parent and Okubo was mostly determined within 6h; in hybridization affinity The results showed that the hybrid affinity of late-maturing peach and mid-maturing peach was low. The pollen viability of the tested parent varieties and their compatibility with Okubo hybrids showed a certain degree of positive correlation.