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Catalase (CAT), superoxide dismutase (SOD), and peroxidase (POD) activities of four transgenic poplar lines (T1, T2, T3, and T4) and non-transgenic (NT) poplar. Three-year-old soil-grown poplar plants were subjected to 0.8% w/v NaCl at different time points (0, 0.5, 1, 1.5, 2, and 6 h). Data were analyzed using one-way ANOVA followed by Duncan’s test. Error bars with letters represent significant differences (p < 0.05, Duncan’s test).
