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. 2021 Jul 2;12:663721. doi: 10.3389/fpls.2021.663721

Figure 3.

Figure 3

Principal component analysis biplot of axes 1 and 2 (78.7% of variability) of wood olive samples belonging to different categories [(A) bioclimatic conditions and (B) growing conditions]. Correlations among anatomical traits [(C) correlation circle] and contribution of variables in the definition of PCA axes (C) are also presented.