薄层培养菊苣花梗诱导花芽分化早期超微结构的变化

菊苣花梗薄层培养花芽分化中细胞超微结构的观察表明，在花芽原基的形成中细胞内线粒体、、高尔基体、内质网、核糖体大量增加，且始终可见线粒体的分裂增殖，大量增加的线粒体为内质网、高尔基体的活动提供能量，内质网和高尔基体为花芽分化合成新的结构蛋白和新的功能蛋白。此外，壁旁体多处可见，且常与内质网、高尔基体相邻分布，其功能可能与物质运输有关。

Ultrastructural Study of Cells During Floral Bud Differentiation of Thin Cell Layer Culture of Cichorium intybus

The ultrastructural research of floral bud differentiation in thin cell layer cul-ture of flower stalk of Cichorium intybus revealed that the mitochondria, Golgi bodies,rough endoplasmic reticulum (RER) increased significantly during the floral bud forma-tion. The mitochondria which were dividing into two were observed in various periods of floral buds differentiation. It was probable that the increased mitochondria supplied ener-gies for the RER and Golgi bodies to synthesize the structural and functional proteins for floral bud differentiation. The results indicated that the process of floral buds differentia-tion was associated with intense metabolism. In addition, the paramural bodies were locat-ed near the RER and Golgi bodies, it may be participate the substance transports.