Principal Component Analyses (PCAs).

<p>Site score plot of the studied variables in the 15 days (green) and 30 days (red) salt stress treatments in <i>N</i>. <i>oleander</i>. PCAs included, as the analyzed variables: growth parameters, photosynthetic pigments, ions and osmolytes (<b>A</b>) or those related to oxidative stress and antioxidant systems (<b>B</b>). Symbols: FW, fresh weight; WC%, water content percentage; Chl a, chlorophyll a; Chl b, chlorophyll b; Caro, total carotenoids; Na⁺(r), sodium in roots; Na⁺(l), sodium in leaves; K⁺(r), potassium in roots; K⁺(l), potassium in leaves; Cl^-(r), chloride in roots; Cl^-(l), chloride in leaves; GB, glycine betaine; MDA, malondialdehyde; TPC, total phenolic compounds; TF, total flavonoids; SOD, superoxide dismutase; CAT, catalase; APX, ascorbate peroxidase; GR, glutathione reductase.