论文部分内容阅读
(一)油桐花芽形成过程中,先开始花序的分化。花序上各小花的分化顺序是:主轴顶生花、二级花轴顶生花、花轴上部侧生花、花轴下部侧生花。小花上各都器官是由外向内分化,即“向心式”的分化。(二)根据桐花分化过程及形态变化可分为八个形态发育期:前分化期,花序始分期,花序分化期,花萼分化期,花瓣形成期,雄蕊分化期,雌蕊发育期,胚珠出现期。(三)在重庆北碚的条件下,从6月上旬至11月底,是米桐花芽形成时期,6至7月份主要是分化花序。花瓣和雄蕊的形成主要在8月份。9月以后是雌蕊和雄蕊的发育时期。
(A) tung tree flower bud formation process, the first inflorescence began to differentiate. Inflorescence on the order of the florets are: spindle top flowers, two flowers top axis flowers, flowers on the lateral side of the flowers, flower axis lower flowers. Every organ in the flower is differentiated from outside to inside, ie “heart-shaped”. (B) According to the process of flower differentiation and morphological changes can be divided into eight morphological development stages: pre-differentiation, inflorescence staging, inflorescence differentiation, calyx differentiation, petal formation, stamen differentiation, pistil development, ovule emergence period. (3) From the beginning of June to the end of November under the conditions of Beibei of Chongqing, it is the period of flower bud formation of Meitongxiong, and the main inflorescences are from June to July. The formation of petals and stamens mainly in August. After September is the developmental period of pistils and stamens.