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作 者 ：李欣;魏朔南

期 刊 ：武汉植物学研究 2009年 27卷 3期 页码：255-261

关键词：黄芩；营养器官；黄芩苷；含量变化；

Keywords:Scutellaria baicalensis Georgi, Vegetative organs, Baicalin, Content variation,

摘 要 ：应用解剖学、组织化学定位和植物化学技术,研究了一、二年生黄芩(Scutellaria baicalensis Georgi)营养器官的结构特征与黄芩苷积累的关系.结果表明:黄芩各营养器官的结构类似于一般草本双子叶植物,黄芩苷主要分布在各器官的薄壁组织细胞内,其中以维管组织的薄壁细胞为多.器官间含量的不同表现为根>叶>茎,这与其结构特征相对应,根中维管组织所占比例最大,其中薄壁组织细胞又占主要部分,故根中黄芩苷含量最高.说明根部是黄芩苷的主要贮存部位,符合黄芩以根入药的传统.不同生长期黄芩苷含量测定结果表明,两年生营养生长前期春季根内含量最高,所以春季采挖为好.

Abstract:The anatomy,histochemistry and phytochemistry methods were applied in the study of the relationship between the structures of vegetative organs of one-year-old and two-year-old Scutellaria baicalensis Georgi and its effective ingredients.The results showed that the development and primary structure of the vegetative organs were the same as other dicotyledons.The baicalin was distributed in the parenchyma cells of vegetative organs and concentrated in the vascular tissue.The content of baicalin in different vegetative organs showed conspicuous difference,the highest amount was in the root,the lowest one was in the leaf and the amount in stem lay between them.This difference related to their structures.In the root of S.baicalensis,the vascular tissue in which parenchyma cells were the major elements took a major portion,so it was the reason why the highest baicalin amount was got in root.As a result,the root was the main storing sites for baicalin,which was coincident with the tradition,i.e.the root of S.baicalensis Georgi was used as medicinal parts.In addition,the highest baicalin content was detected in the two-year-old root at the early stage of vegetative growth,so it should be better to harvest in spring.

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