Study on the correlation between the active constituents of Gentiana rigescens Franch.and soil physicochemical properties
Objective To understand the internal relationship between soil physicochemical factors and the effective components of Gentian.Methods Gentiana plants and rhizosphere soil were collected from 7 samples from 4 producing areas in Dali City,Baoshan City,Lincang City and Bijie City,and the content of soil physicochemical factors and active components(Gentiopicro-side,Swerotiamarin,Dangyaoside and Maganicin)of Gentiana were determined.Correlation analysis,principal component analy-sis and multiple stepwise regression analysis were used to study the relationship between the content of active components and soil physicochemical factors.Results The correlation analysis showed that the content of Gentiopicroside was positively correlated with soil pH,total potassium and polyphenol oxidase.The content of Swerotiamarin was positively correlated with soil organic matter,hydrolyzed nitrogen,available phosphorus and available potassium.The content of Dangyaoside was positively correlated with total potassium and polyphenol oxidase.The content of Maganicin was positively correlated with soil pH.Through stepwise regression analysis,it was found that the main soil factors affecting Gentiopicroside content were total potassium,polyphenol oxidase,cata-lase,etc.The main soil factors affecting the content of Swerotiamarin were polyphenol oxidase and total phosphorus.The main soil factors affecting the content of Dangyaoside were Organic matter and urease.The main soil factors affecting the content of Ma-ganicin were pH and polyphenol oxidase.Conclusion Soil physical and chemical properties are important factors affecting the quality of Chinese medicine of Gentiana rigescens Franch,and there is a synergistic effect among all soil factors.
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万方数据
