In order to compare the quality of different Chrysanthemum morifolium strains,evaluate the quality of C. morifolium efficiently and scientifically,and facilitate the subsequent breeding of C. morifolium varieties,this study established a one-test and multi-evaluation method with chlorogenic acid and luteolin as internal standards.Subsequently,the contents of organic acids and flavonoids in 61 different C. morifolium plants from six strains from Chongqing were determined,and the water content and total ash content were determined according to the pharmacopoeia method.Principal component analysis and cluster analysis were used to identify three excellent individual plants with high organic acid and flavonoid content,namely Yang strain(yj-2-4,yj-3-7,yj-6-15).This study provides an efficient,convenient,accurate and feasible method for the quality evaluation of individual C. morifolium plants,and provides data and theoretical support for the research of C. morifolium breeding.

"> Chrysanthemum morifolium, quantitative analysis of multi-components by single-marker cluster analysis, principal component analysis, comprehensive evaluation