Figure 2

Effects of salt stress and iron deficiency on Na⁺and K⁺concentrations, Na⁺/K⁺ratio, and Fe concentrations in shoots of J. A17 and R108 plants. Concentrations of Na and K and Na⁺/K⁺ ratio in shoots treated with and without 100 mM NaCl for 5 days were shown in panel (a), (b) and (c), respectively. Data are mean ± s.e. with n = 4. Fe concentration in shoots of 5-d-old seedlings of J. A17 and R108 plants exposed to control, Fe-sufficient medium (100 μM Fe-EDTA, +Fe) and Fe-deficient medium (1 μM Fe-EDTA) for 5 days (d). * and ** indicate significant difference between genotypes within a given growth condition at P ≤ 0.05 and P ≤ 0.01, respectively.