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Glutathione (A,B), ascorbic acid (C,D), phenols (E,F), and flavonoids (G,H) in tomato seedlings with the application of carbon nanomaterials. T0: control; CNTs: carbon nanotubes; GP: graphene; DW: dry weight; 10, 50, 100, 250, and 500 represent the mg L−1 applied of each carbon nanomaterial. Different letters indicate significant differences among treatments according to Duncan (α = 0.05). n = 5 ± standard error.
