青藏高原3种秦艽组植物微量元素比较分析

Comparative Analysis of Trace Elements in Three Species of Section Cruciata Gaudin,entiana from Qinghai-Tibet Plateau

利用全谱直读等离子体发射光谱法(ICP-AES)测定了3种秦艽组植物10种微量元素(Cu,Zn,Fe,Mn,Ni,Co,Sn,V,Al,Ti)的含量,并进行了比较分析。结果表明,所测定元素在3个不同物种内的含量排列顺序基本一致,显示了三者在元素富集方面的相似性。就同一种元素在3个物种内的富集水平而言,以麻花艽根部具有较高含量的元素Cu,Zn,Co,Al和Ti,管花秦艽根部则大量富集了其余5种微量元素,达乌里秦艽对元素的吸收积累能力居中,揭示了不同物种对同一元素富集能力的差异。该研究可为秦艽类植物资源的深入开发利用提供参考。

Contents of ten trace elements in three Gentiana species were determined by ICP-AES and comparison among the concentration of trace elements was also disussed. The results indicated that the distribution pattern of elements in three species showed similarly consistence at the aspect of evolutionary approach of elements concentration. The same element had different concentration level in three species, of which Gentiarta strarninea roots enriched higher concentration of Cu, Zn, Co, Al and Ti and other five trace elements had higher concentration in G. siphonantha roots. This revealed that different species had variation in the concentration of the same element. It can provide basic information for the developemnt and utility of Gentiana plants.