Fig. 5

Relationship between the peak area of some metabolites and their contents in five Lonicera species. A–G Chlorogenic acids and important phenolic acids. H–L Important flavonoids differential metabolites. The results were showed by means ± SD. For multiple comparisons, One-way ANOVA-test was used followed by post hoc test and Waller–Duncan method. Different lowercase letters indicate significant differences at P < 0.05