Fig. 3.

Effect of salinity on the values of parameters derived from noninvasive measurements of the dark interval relaxation kinetics (DIRK) of leaf absorbance signal at 520 nm (electrochromic bandshift): maximum amplitude of ECS signal: ECS_t (A), proton conductance of chloroplast ATP synthase: gH⁺ (B), estimated proton flux through thylakoid lumen calculated as a product of ECS_t and gH⁺: ECS_t * gH⁺ (C). The parameters were derived from the data obtained by the measurements in light-adapted leaves of different wheat genotypes (MIR Mirbashir 128, GOB Gobustan, GYZ Gyzyl Bughda, FAT Fatima, ZIR Zirva 80). All data are presented as the mean value ± standard error (SE). Data in columns with the different letters are significantly different according to Duncan's multiple range test at P = 0.05