牡丹(Paonia buffruficosaAndr)性喜冷凉,土层深厚,耐旱而怕潮湿,大而艳丽的花冠深受人民的喜爱。洛阳地处中原,具有牡丹生长得天独厚的自然条件,因此素有“洛阳牡丹甲天下”的美誉,每年“牡丹花会”中外游客云集洛阳,为古都增辉,也促进了中原经济的振兴。另外牡丹根皮可药用,花蕊还可提取香精。随着牡丹的开发利用和商品化生产,研究牡丹的花芽分化规律,对花期调节,改善花的素质具有重要的意义。材料和方法供试材料取自洛阳市第一苗圃牡丹 Peony (Paonia buffruficosaAndr) like hi cool, deep soil, drought and fear of damp, large and colorful corolla loved by the people. Luoyang is located in the Central Plains. It has unique natural conditions for the growth of peony. It is known as “Luoyang Peony.” Every year, “Peony Fair” attracts tourists from both China and foreign countries. Luoyang is the capital of the ancient capital and also promotes the revitalization of the Central Plains economy. In addition peony root bark can be medicinal, flowers can also extract essence. With the development and utilization of peony and commercial production, the research on flower bud differentiation of peony is of great significance to the regulation of florescence and the improvement of flower quality. Materials and Methods The test materials were taken from Peony, the first nursery in Luoyang