Fig. 1.

Effect of NaCl concentration on Arabidopsis lateral root number. Seedlings grown on 1 mM KNO₃ medium for 4–5 d were transferred to the same medium plus the indicated concentrations of NaCl for 21 d. Data are mean emerged LRs ±SE (n=30). Bars with different letters indicate significant difference at P ≤0.05 (Fisher's protected LSD test). The data are representative of similar results in three independent experiments.