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1962—1963年和1978—1979年在杭州浙江衣大果园分别对玉露、五云、小林和白凤四品种花芽分化进行观察,结果表明:桃品种花芽分化期依品种和年份的不同而异。最早出现在6月下旬,迟的在8月上旬,开始分化高峰期集中于7月下旬到8月中旬,至9月底花器各部分原始体几乎均已形成。不同类型枝条以及同一枝条不同部位分化进度不一。短枝分化比长枝早,长枝中下部的芽分化比上部早。而且分化各阶段持续时间各异。10月份以后,花芽转入性细胞的分化和发育。从花粉母细胞出现至花粉粒形成约经3个月,但胚珠形成期仅20多天。
The flower bud differentiation of four varieties of Yulu, Wuyun, Kobayashi and Baifeng were observed in 1967-1963 and 1978-1979 respectively in Zhejiang YiDai Orchard. The results showed that the flower bud differentiation period of peach varieties differed in different varieties and years. The earliest appeared in late June, late in early August, began to focus on the peak differentiation in late July to mid-August, until the end of September almost all parts of flower primitives have been formed. Different types of branches and branches of different parts of the same differentiation progress. Spur branching earlier than the long branches, branches in the lower part of the early bud differentiation. And differentiation of the various durations vary. After October, flower buds turn into the differentiation and development of sex cells. From pollen mother cells to pollen grains formed about 3 months, but ovule formation period of only 20 days.