Figure 9

Correlation plot showing correlation matrix for various variables under Nickel and Proline treatments. Correlogram based on Pearson correlation. Only significant correlations (p < 0.05) are colored. Color gradient shows degree of relationship while positive and negative correlations were presented with different colors. (CAT: catalase, POD: peroxidase, AsA: Ascorbic acid, SOD: superoxide dismutase, TSP: total soluble proteins, TSS: total soluble sugars, S Na: shoot sodium, MDA: malondialdehyde, H2O2: hydrogen peroxide, 1000 GW: 1000 grain weight, SDW: shoot dry weight, RFW: root fresh weight, Chl a: chlorophyll a, T Chl: total chlorophyll, Chl b: chlorophyll b, RDW: root dry weight, SL: shoot length, SFW: shoot fresh weight, S K: shoot potassium, RL: root length, S Ca: shoot calcium).