Fig. 2From: Root and leaf metabolite profiles analysis reveals the adaptive strategies to low potassium stress in barleyHeatmap and hierarchical cluster analysis for the 57 detected metabolites in the three barley genotypes. C: control; LK: low potassium; R: root; L: leaf. The names of the metabolites shown in the corresponding numbers from 1 to 57 were listed in Additional file 1 Table S1Back to article page