Principal Component Analyses (PCAs).

<p>Changes in all measured growth parameters and biochemical stress markers were analyzed in salt-treated plants with respect to the control, non-stressed plants of <i>Plantago crassifolia</i> (A), <i>P</i>. <i>coronopus</i> (B) and <i>P</i>. <i>major</i> (C), in correlation to EC (electrical conductivity) of the substrate, at the end of the four-week treatment. Abbreviations: number of leaves (NL), fresh weight percentage (FW%), water content percentage (WC%), sodium ions (Na⁺), potassium ions (K⁺), chloride ions (Cl^-), sorbitol (Sor), proline (Pro), glycine-betaine (GB), total soluble sugars (TSS).