Abnormal Secondary Growth and Histochemical Localization of Alkaloids in Root System of Aconitum flavum Hand.-Mazz.

作     者：祁建钊 郭继元 徐青 

作者机构：宁夏大学生命科学学院宁夏银川750021 

出 版 物：《Agricultural Science & Technology》 (农业科学与技术（英文版）)

年 卷 期：2011年第12卷第9期

页      面：1313-1317页

学科分类：1008[医学-中药学(可授医学、理学学位)] 10[医学] 

基　　金：Supported by Natural Science Foundation of Ningxia Hui Autonomous Region(NZ0932) National Key Technology R & D Program of China(20068AI06A15-11)~~ 

主　　题：Aconitum flavum Hand. - Mazz. Root system Abnormal secondary growth Alkaloids Histochemical localization 

摘      要：[Objective] The purpose of this study was to clarify the structure,growth pattern and histochemical localization of alkaloids in root system of Aconitum flavum Hand.-Mazz.[Method] Paraffin sectioning and histochemistry were employed for performing the analysis in this study.[Result] The root system of Aconitum flavum Hand.-*** of taproot,lateral root and adventitious *** primary structure of root system is normal,but secondary structure shows *** cambium and the extra cambium of taproot form a ＂U＂-shaped secondary vascular bundle and tertiary bundle in abnormal secondary *** sieve tube group is made of little sieve tube group which is differentiated from primary phloem and ***,the secondary xylem in tuberous root also appears to be a ＂U＂ *** cells of secondary phloem occupy most of the tuberous *** sieve tube group of tuberous root is mainly differentiated from parenchyma cell of secondary phloem.[Conclusion] The difference in abnormal secondary structure of taproot and tuberous root are attributed to their varied cambium compose and activity *** are mainly accumulated in parenchyma cell of the inside cortex and between bundle in taproot,while parenchyma of secondary phloem and pith in tuberous root.