基于微量元素的野生与栽培红芪鉴别

Identification of Wild and Cultivated Hedysari Radix Based on Trace Elements

目的:研究野生与栽培红芪中微量元素的差异,探讨微量元素鉴别野生与栽培红芪的可行性。方法:采用原子吸收光谱法测定微量元素含量,并进行单因素方差分析、相关性、最优尺度度量分析、聚类分析及判别分析。结果:野生与栽培红芪中Cu含量无显著性差异,Fe,Ca,K,Zn,Ni,Na,Mg,Mn,Cr,Li,Co含量均具显著性差异性;Mg,K,Fe,Ca,Cu,Ni含量野生品高于栽培品,Zn,Na,Mn,Cr,Li,Co含量栽培品高于野生品;红芪样品生长类型与Fe,Ca,K,Ni,Mg元素含量呈极显著的正相关,与Zn元素含量呈显著的负相关,与Na,Mn,Cr,Li,Co元素含量呈极显著的负相关;28批红芪样品分为野生品与栽培品两类;Fe,Li,Co与野生、栽培生长类型存在Fisher线性关系。结论:红芪野生与栽培生长类型与微量元素含量存在密切关系,微量元素鉴别野生与栽培红芪有一定可行性。

Objective： To investigate the differences in trace elements between wild and cultivated Hedysari Radix,and analyze the feasibility of trace elements in identifying wild and cultivated Hedysari Radix.Method： The content of trace elements in Hedysari Radix was determined by Atomic Absorption Spectrometry（ AAS） and analyzed by one-way analysis of variance,correlation analysis,optimal scaling analysis,cluster analysis and discriminant analysis. Result： There was no significant difference in content of Cu between wild and cultivated Hedysari Radix, but the contents of Fe, Ca, K, Zn, Ni, Na, Mg, Mn, Cr, Li and Co had significant differences between wild and cultivated Hedysari Radix. The contents of Mg,K,Fe,Ca,Cu and Ni in wild Hedysari Radix were higher than those in cultivated samples,but the contents of Zn,Na,Mn,Cr,Li and Co in cultivated Hedysari Radix were higher than those in wild samples. The growth types had highly significantly positive correlation with Fe,Ca,K,Ni and Mg contents,but were significantly negatively correlated with Zn content and had highly significantly negative correlation with Na, Mn, Cr, Li and Co contents. 28 batches of Hedysari Radix samples were divided into two categories： wild Hedysari Radix and cultivated Hedysari Radix. The contents of Fe,Li and Co had Fisher linear relationship with the growth types（ wild or cultivated）.Conclusion： There was closely relationship between the contents of trace elements and growth types（ wild and cultivated） of Hedysari Radix,so there was certain feasibility to identify the wild and cultivated Hedysari Radix based on trace elements.