Fig. 4From: Comparison of volatile compounds in different parts of fresh Amomum villosum Lour. from different geographical areas using cryogenic grinding combined HS–SPME–GC–MSa Classification of 72 analyzed samples by PCA analysis. b Dendrograms of 72 analyzed samples resulting from hierarchical clustering analysis. I, fruit samples; II, root samples; III, leaf samples; IV, stem samplesBack to article page