香果树芽的生长发育与花芽分化

香果树为我国的二类保护树种,其花芽为混合芽着生于春梢上部,当年分化,当年开花。在浙江临安4月中旬到5月底为花序分化期,6月上旬至7月中旬为小花各花器分化期,7月中旬至8月上旬为大小孢子分化发育期,8月上中旬开花。从开始分化到开花历时4个月左右。在同一花序上主、侧轴顶花先分化,下部侧生花后分化,属向心式分化,花序为圆锥状聚伞花序。

Differentiation and development of floral bud of Emmenopterys henry i Oliv.

Emmenopterys henryi Oliv. belongs to the second category of the national protective species of China, the floral bud (mixed bud) of which inserts on the spring tip of branch and differentiats and blossoms in the same year. In Lin'an of Zhejiang, inflorescence differentiation phase of E. henryi is from the middle of April to the end of May, the part of floret differentiation phase from the beginning of June to the middle of July, megaspore and microspore differentiation phase from the middle of July to the beginning of Augst, and blossoms at the beginning or middlee of Augst. About 4 months is needed from differentiation to blossom. The inflorescence of E. henryi is conical cyme, belongs to centripetal differentiation.