狭叶锦鸡儿(Caragana stenophylla Pojark)花柱通道细胞的细胞学研究

对狭叶锦鸡儿花柱进行超微结构观察表明，在开花前一天到开花当天，花柱通道细胞结构有以下特点：１） 通道细胞不具备典型的传递细胞特征，无壁内突．２） 通道细胞是在开花当天发育完全的，分泌面的细胞壁外被角质层．３） 开花前一天，靠近花柱道的部分细胞解体，细胞质流入花柱道中，其中质体膨大，膜不完整，片层松散，淀粉粒大而明显．另外细胞质中小泡丰富．部分完整的通道细胞分泌面的细胞壁有角质层正在形成；４） 开花当天，部分通道细胞细胞壁发育完全，分为三层，由外向内为角质层、细胞壁外层和细胞壁内层；５） 角质层在相邻的通道细胞间连续分布，呈波浪状．花柱道中内含物紧贴角质层分布．根据观察，狭叶锦鸡儿花柱通道细胞不具备典型分泌细胞的特点，属另外一种通道细胞类型

The Cytological Study of the Canal Cell in the Style of Caragana stenophylla Pojark

The fine structure of the canal cell in the style of Caragana stenophylla Pojark has been observed. The ultrastructural specializations of canal cell during flowering are characterized as follows:1) The characteristics of transfer cell such as the wall ingrowthes have not been observed in the canal cell;2) The canal cell mature on the day of flowering. There is cuticle on the surface of the secretory face of canal cell wall;3) Some cells near style canal disintegrate on the day before flowering. The cytoplasm flows into the style canal. The plastids expand with the imcomplete membrane, inflating lamellars and obvious starch grains. The vesicles are abundent in the cytoplasm in style canal;4) The cuticle is developing on the wall of some mature canal cell of secretory face;Some mature canal cell possess completed wall on the day of flowering. The wall has three layers: cuticle, outer layer and inner layer. 5) The cuticle with wavy shape is distributed continuously between the canal cells. The cytoplasm is dispersed near the cuticle. According to the observation, the canal cells of Caragana stenophylla Pojark have not the characteristics of secretory cell. They are another type of canal cell.