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目的:对银线草原植物形态、药材性状和显微特征进行鉴别研究,为开发利用该药用植物提供依据。方法:采用石蜡切片法观察银线草根、茎、根茎及叶的解剖结构,采用N ikon生物显微镜观察银线草粉末的显微特征,采用TLC色谱法对银线草进行理化鉴别。结果:银线草叶的气孔下陷类圆形,韧皮部较窄,木质部发达;茎断面中空具较大的髓腔;根中皮层宽广,内皮层明显,韧皮部狭窄;根茎中皮层宽广,内皮层不明显,韧皮部狭窄。粉末可见表皮细胞、薄壁细胞、石细胞、纤维束、淀粉粒和导管。TLC结果表明银线草中香豆素类成分含量相对较大,可以作为薄层鉴定的主要依据。结论:此研究结果可鉴别银线草并为进一步保护和开发利用银线草提供理论依据。
Objective: To identify and study the plant morphology, medicinal properties and microscopic characteristics of silver-lined grassland, and provide basis for the development and utilization of this medicinal plant. METHODS: Paraffin sections were used to observe the anatomical structures of the roots, stems, rhizomes, and leaves of silver grass. The microscopic features of the silver grass powder were observed by Nikon biomicroscopy. The physicochemical identification of Senecio canadensis was performed by TLC chromatography. RESULTS: The stomata of silver grass leaves were round in shape, with a narrow phloem and well-developed xylem. The stem section was hollow with a large medullary cavity; the middle cortex was broad, the inner cortex was obvious, and the phloem was narrow; the cortex was broad and the inner cortex was not Obviously, the phloem is narrow. Powder can be seen in epidermal cells, parenchyma cells, stone cells, fiber bundles, starch grains, and catheters. The results of TLC showed that the content of coumarins in Agrimonia sinensis was relatively large and could be used as the main basis for thin layer identification. Conclusion: The results of this study can be used to identify S. sinensis and provide theoretical basis for the further protection and development of S. rapae.