新疆野生杏花芽形态分化初步研究

采用常规石蜡切片法对新疆伊犁地区野生杏花芽形态分化过程进行观察研究。结果表明，野生杏的花芽形态分化始于6月下旬，从开始花芽分化到雌蕊原基分化形成为止，整个分化时间约持续70d，以各部分的原基出现为划分标准可分为未分化期、分化始期、萼片原基分化期、花瓣原基分化期、雄蕊原基分化期及雌蕊原基分化期6个时期。6月22日以前处于未分化期，7月初进入分化初期，整个分化初期持续30d左右；萼片分化多数在7月中下旬进行；花瓣分化集中在8月初进行；雄蕊分化多在8月中下旬进行；9月初除8．3％的花芽处于雄蕊分化期，其余全部进入雌蕊原基分化期。各分化时期有交错重叠现象，从开始花芽分化到雌蕊原基分化形成，整个分化时期集中在7月上旬至9月上旬。

Primary Study on the Flower Bud Morphological Differentiation of Wild Apricot in Xinjiang

In this experiment, the paraffin cross section method is adapted to observe the developing process of Wild Apricot （Armeniaca vulgaris Lain） flower bud morphological differentiation. The results indicate that flower bud morphological differentiation started in late June. From the beginning of the flower bud differentiation to the pistil primordial differentiation, the whole process approximately last 70 days. The whole process may be divided into pre-differentiation stage,the early differentiation stage,sepal primordial differentiation stage, petal primordial differentiation stage, stamen and pistil primordial differentiation stage according to the standard of every part＇s primordial occurrence. Before June 22nd, flower buds were in a certain condition of non-differentiation. At the beginning of July the flower buds entered the early differentiation stage,this stage lasted about thirty days. In the middle ten days of July,most flower buds were found in sepal primordial differentiation stage. The petal primordial differentiation concentrated at the beginning of August. The stamen primordial differentiation stage concentrated in middle ten days of August. At the beginning of September, all came into the pistil primordial differentiation stage except 8.3 flower buds. There was intersectional phenomenon in each differentiation stage. From the starting of the flower bud differentiation to the pistil primordial differentiation, the whole process appears intently from the first ten days of July to the first ten days of September.