FIGURE 6.

Principal component analysis (PCA). Circles (∙) represent different analysis parameters. Squares (■) represent different treatments (S, S + Ps, and S + Glu). All studied parameters and the different treatments are projected onto the F1–F2 principal factorial plane that explains 78.91% of the variation. SDW, shoot dry weight; RDW, root dry weight; SDW/RDW, shoot dry weight/root dry weight ratio; MDA, malondialdehyde; CAT, catalase activity; APX, ascorbate peroxidase activity; SOD, superoxide dismutase activity; GR, glutathione reductase activity; DH, dehydrogenase; URE, urease; BGL, β-glucosidase; IAA, indole-3-acetic acid; S Na⁺, shoot sodium content; S K⁺, shoot potassium content; S Ca²⁺, shoot calcium content; S Cl^–, shoot chloride content; R findings Na⁺, root sodium content; R K⁺, root potassium content; R Ca²⁺, Root calcium content; and R Cl^–, root chloride content.