Cheng Ming-En, Wang De-Qun
Department of Pharmacy, Anhui University of Chinese Medicine and Anhui Key Laboratory of Modernized Chinese Materia Medica, Hefei 230031, China.
Zhongguo Zhong Yao Za Zhi. 2013 Jul;38(13):2068-72.
The microscopic structure and histochemical localization of the Polygonatum sibiricum, P. cytonema, P. filipes, P. zanlanscianense and P. odoratum was studied.
Scanning electron microscope (SEM) and digital biological microscope (DBM) were applied in the research.
Venation bundle showed in three types included collateral, amphivasal and incomplete amphivasal bundles. Morphological differences of venation bundles could be seen under the fluorescence microscope. Calcium oxalate existed in the mucilage cells looked similar to columnar crystals under SEM. In rhizome of Polygonatum, polysaccharides presented in mucilage cells, saponins and volatile oil were found in ground tissue.
Microstructure difference of rhizomes would be used for identification of the Polygonatum plants. Polysaccharides and saponins are distributed in different cells of Polygonatum plants.
研究玉竹、滇黄精、多花黄精、湖北黄精和小玉竹的显微结构及组织化学定位。
本研究采用扫描电子显微镜（SEM）和数码生物显微镜（DBM）。
叶脉维管束有三种类型，包括外韧维管束、周木维管束和不完全周木维管束。在荧光显微镜下可以看到叶脉维管束的形态差异。草酸钙存在于黏液细胞中，在扫描电子显微镜下看起来类似于柱状晶体。在黄精根茎中，黏液细胞中有多糖，基本组织中发现有皂苷和挥发油。
根茎的微观结构差异可用于黄精属植物的鉴定。多糖和皂苷分布于黄精属植物的不同细胞中。
