Heatmap histogram correlation between different morphological and physiological traits of H. vulgare studied in this experiment. The abbreviations are as follows: SOD (superoxidase activity in the leaves), K-S (potassium content in shoots), MDA (malondialdehyde content in leaves), Na-S (sodium content in shoots), AsA (ascorbic acid contents in the leaves), Ca-S (calcium content in the shoots), TC (total chlorophyll contents), PH (plant height), NP (net photosynthesis), PFW (plant fresh weight) and SL (stomatal length). The different treatments are represented as (X1) (salinity 0 mM + AsA 0 mM), (X2) (salinity 0 mM + AsA 30 mM), (X3) (salinity 0 mM + AsA 60 mM), (X4) (salinity 50 mM + AsA 0 mM), (X5) (salinity 50 mM + AsA 30 mM), (X6) (salinity 50 mM + AsA 60 mM), (X7) (salinity 100 mM + AsA 0 mM), (X8) (salinity 100 mM + AsA 30 mM), (X9) (salinity 100 mM + AsA 60 mM), (X10) (salinity 150 mM + AsA 0 mM), (X11) (salinity 150 mM + AsA 30 mM) and (X12) (salinity 150 mM + AsA 60 mM).