落葵粘液细胞分布及发育的解剖学研究

采用石蜡切片法对落葵粘液细胞的分布及发育构造进行观察研究.结果表明:(1)除花药、子房及种子外,粘液细胞普遍存在于落葵植株的地上部分内.茎中的粘液细胞多单个散生分布于皮层、髓及髓射线;叶内的粘液细胞主要分布于海绵组织,栅栏组织中则很少见;叶柄中的粘液细胞主要沿叶柄"U"型皮层的两边分布;发育后期作为果实的花萼片中粘液细胞则散生分布很多.(2)根据发育过程的不同形态,可将粘液细胞的发育分为4个阶段:原始细胞阶段、液泡化阶段、成熟阶段和细胞质解体阶段;粘液细胞最早可见于第三叶原基,并且粘液细胞的发育与植株器官的发育不同步.

Developmental Structure and Distribution of Mucilage Cells in Basella alba

The developmental structure and distribution of mucilage cells of Basella alba L.are studied with paraffin sectioning.The results are as follows:mucilage cells generally exist in the organs above ground except anther,ovary and seed.In the stem,most mucilage cells may scatter in the cortex,pith and pith ray.In leaf,mucilage cells mainly occur in the spongy tissue,but few can be seen in palisade tissue.In leaf stalk,mucilage cells distribute along the U-type cortex of leaf stalk.There are lots of mucilage cel...