Fig. 4

Concentration of Na⁺ and K⁺ ions of rice plants after 7 days exposed to salinity stress. a, c Na⁺ and K⁺ ion concentration in roots. b, d Na⁺ and K⁺ ion concentration in leaves were measured at 0, 4, and 7 days of salinity treatment (200 mM NaCl). Values are means of three replicates ± SE. *p < 0.05, **p < 0.01, LSD test. DW: dry weight