Comprehensive quality evaluation of Codonopsis Radix from different planting areas in Jiuzhaigou County

Author: Yuan-Feng ZOU ¹
Author Information

1. College of Agronomy
Publication Type:Journal Article
Keywords: Cluster analysis; Codonopsis Radix in Jiuzhaigou County; Planting areas; Principal component analysis; Regionalizing the planting areas
From: Chinese Traditional and Herbal Drugs 2011;42(8):1600-1604
CountryChina
Language:Chinese
Abstract: Objective: To comprehensively compare the qualities of Codonopsis Radix from the different planting areas for regionalizing the planting areas. Methods: The main traits and chemical compositions of 38 samples of Codonopsis Radix from the different planting areas in Jiuzhaigou County were comprehensively compared by SPSS 17.0 software using principal component and cluster analysis. Results: Five principal components whose accumulated variance contribution rate was over 85.604% were obtained. Based on these principal components, 38 samples of Codonopsis Radix from the different planting areas in Jiuzhaigou County were clustered into four groups by within-groups linkage cluster methods. Conclusion: Principal component and cluster analysis are reliable to comprehensively evaluate the quality of Codonopsis Radix. Significant differences among these samples from the different planting areas in Jiuzhaigou County are obvious. The standardization of cultivation techniques and application should be speeded up.