魔芋球茎贮藏淀粉和甘露聚糖粒的形态观察

在光学显微镜和透射电镜下观察了魔芋（Ａｍｏｒｐｈｏｐｈａｌｕｓｃｏｎｊａｃ）球茎中甘露聚糖粒和淀粉粒的形态。两种贮藏多糖分别位于不同的细胞中。淀粉粒在造粉体内发育，以复粒存在，用魔芋球茎仔茎茎尖为材料观察显示，淀粉粒的形成早于甘露聚糖颗粒的形成。甘露聚糖粒形态多数近随圆形，一些甘露聚糖颗粒内包含了针晶体，但多数的甘露聚糖粒内部不包含针晶体，由纯净的甘露聚糖构成。

Morphology of starch and mannan granules in corms of Amorphophallus conjac

The morphology of starch granules and mannan granules in corms of Amorphophallus conjac was observed by means of light microscopy and transmission electron microscopy The two saccharides were located at different kinds of the corm cells Starch granules in the corm cells were developed in amyloplasts and compound starch granules were formed When young corm branches were used as materials to investigate the starch granule development, results indicated that starch granules were formed earlier than those of the mannan granules Most mannan granules were approximately oval-shaped Some of the granules were observed with raphide crystals inside; but most of the granules were no raphide crystals inside and composed of pure mannan