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魔芋球茎贮藏淀粉和甘露聚糖粒的形态观察
史益敏; 陶懿伟; 陆雅君; 费雪南;
上海农学院植物科学系
摘要:
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。
关键词:  魔芋  甘露聚糖粒  淀粉粒  异细胞  针晶体  
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