Effect of inorganic salt solution application on biomarkers of oxidative stress: (A) electrical conductivity (EC), (B) conjugated dienes (CJD), (C) 4-hydroxy-2-nonenal (4-HNE) and (D) protein carbonylation (PC) adduct, in P25 controlled deteriorated lettuce seeds subjected to no soaking or soaking in deionised water (DW), CaCl2 generated cathodic water (CaCl2 CW), CaMg, MgCl2 generated cathodic water (MgCl2 CW), NaCl generated cathodic water (NaCl CW), or NaCl generated cathodic water adjusted to pH 6.5 (NaCl CW [6.5]). Values represent mean ± SD (n = 5 for EC and n = 3 for all other parameters). Bars labelled with different letters indicate significant differences at p < 0.05 (ANOVA).