浙贝母鳞片细胞休眠解除前后超微结构的变化

浙贝母休眠解除后，鳞片近轴面表皮附近的几层细胞首先降解。本文观察了这些细胞在休眠解除前后超微结构的变化。与休眠状态时的细胞相比，解除休眠后的细胞中颗粒和丝状物的数量明显增加，一些细胞中出现了复杂的膜结构。线粒体的数目增加，常聚集在细胞核和细胞壁旁。胞间连丝的直径略有增加。休眠解除前后的细胞中，常可见到各类囊泡、多泡体与壁旁体，一些小囊泡正在进入细胞中。表明两种时期的细胞间都发生着物质和信息的交换

ULTRASTRUCTURAL CHANGES OF SOME CELLS IN THE SCALE OF FRITILLARIA THUNBERGII MIQ. BEFORE AND AFTER RELEASING DORMANCY

Several layers of cortex parenchymal cells near the proximal periderm in scale degraded after releasing dormancy of the bulb. The cell had filamentous materials with obviously increased quantities in comparison with the cells in dormancy. Many complicated membrane bodies could be found in some cells. The number of mitochodrions increased and they always gathered near the nucleus and the edge of cell. The diameter of plasmodesmata became little wider. Various vesicles, multivesicular bodies and paramural bodies were always found in the cells before and after releasing dormancy and some small vesicles were getting into the cell. These showed that the exchanges of materials and information occured between the cells, dormant or not.