Phenotypic (above diagonal) and genotypic (below diagonal) correlation coefficients between physiological characteristics.

<p>In blue the positive correlations and in red the negative correlations with p<0.05 (*) and p<0.01 (**). The parameters with most significant correlations are shown. Low correlations between -0.5 and 0.5 are in blank. For all correlations, see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0178790#pone.0178790.s005" target="_blank">S5 Appendix</a>.