北柴胡各器官中分泌道的发育与分布规律研究  

Development and Distribution Law of Secretory Canals in Different Organs of Bupleurum chinense DC.

作　　者：谭玲玲[1] 侯晓敏[1] 

机构地区：[1]青岛农业大学生命科学学院/山东省高校植物生物技术重点实验室,山东青岛266109

出　　处：《中国农学通报》2013年第1期141-144,共4页Chinese Agricultural Science Bulletin

基　　金：国家自然基金项目"巴德-毕氏综合症相关蛋白的结构与功能研究"(31200554);山东省高等学校科技计划项目"桔梗营养器官中主要药用成分的积累部位和含量变化研究"(J11LC06);青岛农业大学高层次人才启动基金"桔梗的结构发育及其主要药用成分积累关系的研究"(630909)

摘　　要：为了为进一步探讨北柴胡体内次生代谢产物的积累与分布提供解剖学资料,本文利用石蜡切片法对北柴胡(Bupleurum chinenseDC)全株不同器官中分泌道的结构、分布特征及茎叶中分泌道的发育进行了观察研究。结果表明:(1)北柴胡各器官中分泌道的结构为一圈上皮细胞围绕着中央的腔隙组成,在上皮细胞外无鞘细胞存在。(2)通过观察北柴胡芽、幼茎及幼叶,发现北柴胡茎叶中分泌道的发育方式为裂生型,且分泌道在茎叶的初生分生组织阶段就已形成;而在根的初生结构中无分泌道存在,即分泌道在根的发育过程中出现相对较晚。(3)在北柴胡各个器官中,包括根、茎、叶、苞片、花和果实中均有分泌道存在,仅种子中没有。且这些分泌道主要分布于薄壁组织中且通常分布在维管组织附近。The aim was to provide the anatomical data for studying the accumulation and distribution of secondary metabolites in Bupleurum chinense DC.The structure and the distribution of secretory canals in the different organs and the development of secretory canals in the stem and the leaf of Bupleurum chinense DC have been observed by the paraffin section method.The results showed as follows：（1） Each secretory canal in the organs of Bupleurum chinense DC consists of a layer of epithelial cells encircling a round canal,and there were no sheath cells outside the epithelial cells.（2） Secretory canals of schizogenous origin were found through the observation of the bud,the young stem and the leaf of the Bupleurum chinense DC;and the secretory canal formed in the stage of primary meristem in the stem and the leaf.However,there wasn ＇ t a secretory canal in the primary structure of the root.The secretory canals appeared relatively late in the development of the root.（3） There were secretory canals in root,stem,leaf,bractlet,flower and mericarp,but not in seed.The secretory canals were distributed in parenchyma tissue and mainly beside the vascular bundle.

关 键 词：北柴胡 器官 分泌道 发育 分布 

分 类 号：Q944.5[生物学—植物学]