Fig. 1
From: The evolution of fruit scent: phylogenetic and developmental constraints
VOC classes in ripe and unripe fruits. Correlation coefficients above the figures are Spearman’s moment correlation coefficient (ρ), which is not affected by outliers and the non-normal distribution. X and Y axes are the relative amount of each VOC class in unripe and ripe fruits. Statistical significance of the correlation coefficients is based on correlation tests. +p < 0.1; **p < 0.01; ***p < 0.001