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Effects of silicon (0.83 mM) and salt stress (65 mM) on leaf chlorophyll concentration (A) and net photosynthetic rate (B). All parameters were measured after 1.5, 3.5, and 7.5 days of salt treatment. Vertical bars represent the standard deviations (n = 3). Different letters at the same time point represent significant differences (p < 0.05) between the treatments. Sharing the same letter indicates no significant difference between the treatments.
