论文部分内容阅读
金缕梅的腋芽 (叶芽 )由前出叶和叶原基构成 ,顶芽由叶原基构成。其叶原基被两枚布满绒毛的托叶紧密包住。叶芽的叶原基分化期为 5～ 11月 ,6～ 8月高温季节曾一度停止分化 ,最后只分化出 4枚叶原基。花芽 (腋芽 )由前一年分化的 1枚前出叶、 2枚退化叶和翌年 4月开始分化的 1枚总苞叶、 3枚苞叶和 3朵小花构成 ;小花由 2枚小苞、 4枚萼片、 4枚花瓣、 8条雄蕊和 2心室雌蕊构成。花芽发育主要在 4～ 9月 ,于 6月形成雌蕊以后发育暂时停止 ,进入 9月以后再开始形成胚珠和花粉 ,于次年 2月开花。
The witch hazel axillary buds (leaf buds) from the former leaves and leaf primordium, the top bud from the leaf primordium. The leaf primordia are covered with two villous stipules. Leaf bud leaf primordium differentiation period from May to November, June to August once the high temperature season to stop differentiation, and finally only differentiated into four leaf primordia. Flower buds (axillary buds) consisted of one anterior leaf differentiated from the previous year, two degenerated leaves, and one total leaf adaxial leaf, three husk leaves and three florets that began to differentiate in April of the following year. Florets consisted of two small buds, 4 sepals, 4 petals, 8 stamens and 2 ventricular pistils. Flower bud development mainly in April to September, the formation of pistils in June after the development of the temporary suspension, into September and then began to form ovules and pollen, in February the following year flowering.