Figure 6
Pearson correlations matrix. Significant correlations coefficients (p ≤ 0.05) are set in bold, with positive and negative correlations being distinguished by green and red, respectively. (a) Pearson correlation matrix in roots of established cultivars; (b) Pearson correlation matrix in roots of new cultivars; (c) Pearson correlation matrix in leaves of established cultivars; and (d) Pearson correlation matrix in leaves of new cultivars. Abbreviations: Maximum quantum yield of PSII (Fv/Fm), the effective quantum yield of PSII (ΦPSII), electron transport rate (ETR) and non-photochemical quenching (NPQ).
