FIGURE 3.

Principal components analysis (PCA) of drought responses at early stress (A,D), late stress (B,E) and recovery (C,F) of the wild beets (OEI, CMP, VMT) and sugar beet to a progressive soil water deficit. (D–F) Principal components loadings (% of variation explained) and Pearson’s product moment correlation coefficient for each variable (^∗p < 0.05, ^∗∗p < 0.01; ^∗∗∗p < 0.001). Four biological replicas were considered per genotype and stress level (raw data available as Supplementary Table S1).