Fig. 6.

Linking salinity tolerance of wild and cultivated rice to accumulation of reactive oxygen species (ROS) and Na⁺ in leaf mesophyll cells after 42 days of 100 mM NaCl treatment: (A & E) ROS & Na⁺ fluorescence in the mesophyll of control plants; (B & F) relative ROS and Na⁺ fluorescence in the mesophyll of salinity-stressed and control plants; (C & G) Pearson correlation of relative ROS production and Na⁺ fluorescence and relative biomass; (D & H) representative image of ROS and Na⁺ in mesophyll. The scale bars = 5 μm. Data are means and the error bars indicate the standard errors. Different lowercase letters indicate significant differences at P < 0.05 for each Duncan group