Fig. 1.

Shoot and root dry weights in seedlings of Atriplex halimus issued from a coastal saline site (Monastir) or an inland semi-arid area (Sbikha) and exposed for 10 d to control nutrient solution or to nutrient solution containing 40 or 160 mm NaCl or 15 % PEG in the absence or presence of 50 µm ABA in the nutrient solution. Initial dry weights were 2·53 ± 0·13 g and 1·97 ± 0·11 g for shoots and roots, respectively. Each value is the mean of 12 replicates and vertical bars are s.e. of the means. Values sharing a common letter are not significantly different at P < 0·05.