TABLE 2 Alterations in some physiological and anatomical parameters in the shoots of Scorzonera hieraciifolia treated with 0, 150, 300, 450 and 600 mM NaCl. Means of 5 replicates ± SD. Means followed by different letters are significantly different according to Duncan’s test at P ≤ 0.05. SSD: shoot succulence degree, ST: shoot thickness, PA: plant area, SPA: stomatal pore aperture, Total Chl: total chlorophyll, Total Car: total carotenoid, DW: dry weight.