两种黄芪主根内部构造和有效成分含量变化规律的研究

对膜荚黄芪和蒙古黄芪主根内部结构和有效成分含量变化规律的研究发现，由于两种黄芪个体发育节律的不同，其主根内部结构和养分累亦遵循各不同的变化规律，有效成分黄芪甙和总多糖含量亦随这种营养生长和生殖生长交替规律的不同而变化，并且与养分的积累与消耗呈正相关，两种有成分的含量在萌动期前和枯萎期后达到高峰。

THE STUDY ON VARIATIONS OF INTERNAL STRUCTURE AND THE ACTIVE CONSTITUENT CONTENTS IN THE MAIN ROOTS OF TWO SPECIES OF ASTRAGALUS

Acording to the study on variations of the internal structure and the activeconstituent contents in the main roots of Astragalus membranaceus (Fish.) Bungeand A. membranaceus (Fish.) Bge. var mongholicus (Bge.) Hsiao, we found thatthe changes in the internal structure and the nutrient accumulation correspondedparticularly with their different rhythm of individual development. The contents ofthe two active constituents. Astragalaside Ill and total APS, also followed theirdifferent latvs of alternate vegetative growth and reproductive growth and positivelycorrelated with the nutrient accumlation and consumption trends; Furthermore, thecontents came to the summit before germination and after wilting.