Figure 1
From: Lipidomic profiling of the developing kernel clarifies the lipid metabolism of Paeonia ostii

Analysis of lipid accumulation at different stages of kernel development in Paeonia ostii. (A–C) PCA plots, showing (A) T1 as compared to T2, (B) T1 as compared to T3, and (C) T1 as compared to T4. (D–F) OPLS-DA plots, showing (D) T1 as compared to T2, (E) T1 as compared to T3, and (F) T1 as compared to T4. (G–I) Permutation tests of the OPLS-DA plots (200 random permutations), showing (G) T1 as compared to T2, (H) T1 as compared to T3, and (I) T1 as compared to T4. R2 (downregulate squares) indicates the goodness of fit of each OPLS-DA model, while Q2 (green circles) reflects the predictive value of each model, based on the percentage of the correctly classified samples during cross-validation. Regression lines for R2 and Q2 are shown in each plot.