Fig. 2

Principal component analysis (PCA) score plots and hierarchical clustering of the metabolites in roots. PCA score plots in ESI positive mode (a) and negative mode (b) based on HILIC UHPLC-Q-TOF MS data of root samples of CmANR1-OVXs and WT chrysanthemum. Hierarchical clustering results of significantly different metabolites of positive (c) and negative mode (d) data of roots in CmANR1-OVXs and WT chrysanthemum