珠子参根茎结构特征与皂苷积累的动态变化关系  

Dynamic Relationships between Structural Characteristic and Saponins Accumulation in Rhizome of Panax japonicus var.major

作　　者：王桂芹[1] 努尔巴衣.阿布都沙勒克 

机构地区：[1]安徽科技学院生命科学学院,凤阳233100

出　　处：《植物研究》2011年第3期284-288,共5页Bulletin of Botanical Research

基　　金：国家重点基础研究发展规划资助项目(G1999043508);安徽省教育厅自然科学基金资助重大项目(KJ2009A166)

摘　　要：皂苷类物质是珠子参根茎内贮存的重要次生代谢物质。根据皂苷类物质的化学性质,采用组织化学定位、显微制片技术和皂苷定量分析方法对不同生长年限珠子参的根茎节部进行了解剖学与皂苷动态积累的关系研究。结果表明:珠子参根茎节部横切面结构复杂,具有2至多个维管柱,属异常结构。珠子参根茎节部的加粗生长依赖于次生结构与三生结构的发生和分化。根茎节部分泌腔周围的分泌细胞、次生韧皮和三生韧皮部是珠子参皂苷类物质主要积累场所。随着珠子参生长年限的延长,根茎节部分泌腔、异常维管柱的数目及皂苷的含量增加。分泌腔、异常维管柱的数量和相对密集的节部可作为珠子参优良品种选育的结构和形态指标。Saponin is an important secondary substance stored in the rhizome of Panax japonicus var.major.According to the chemical properties of saponins,the relationships between the anatomical structure and the content of saponins in the rhizome nodes of P.japonicus var.major with different growth years were studied by means of histochemical localization,light microscope and quantitative analysis of saponins.The results showed that the cross-section of rhizome node which has two or more vascular cylinders is much complicated in structure,belongs to abnormal structural;The continual thickening growth of rhizome＇s node principally resulted from the differentiation and development of the secondary and tertiary structure.The secretory cells around the cavities,secondary phloem and tertiary phloem are the main stored place of saponins in rhizome node.The numbers of secretory cavities and abnormal vascular cylinders,and saponins content increase as it grows with age.The number of secretory cavities,quantity of the abnormal vascular cylinders and density of nodes are the main structural and morphological indicators in variety breeding of P.japonicus var.major.

关 键 词：珠子参 根茎 组织化学定位 解剖结构 皂苷含量 

分 类 号：S567.2[农业科学—中草药栽培]