Fig. 1From: Metabolomic analysis on the mechanism of nanoselenium alleviating cadmium stress and improving the pepper nutritional valueEffects of different nano-Se concentrations on metabolite concentrations in pepper root (A: T1, T2, T3 vs. CK; B, C, D: T1 vs. CK; E, F, G: T2 vs. CK; H, I, J: T3 vs. CK). A, B, E, H: principal component analysis (PCA); C, F, I: permutation plots of the validated models (PLS-DA); D, G, J: volcano plot; T1: nano-Se1; T2: nano-Se5; T3: nano-Se20Back to article page