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AFM height and 3D image of seed coat surface of untreated seeds (a) and CP-treated seeds in the glow regime for 90 s (G90) (b). Mean surface roughness (Sa) of seeds treated in glow regime for 30 (G30) or 90 s (G90), and afterglow regime for 30 (AG30) or 90 s (AG90) (c). Displayed values are the mean ± SE of three replications. Different letters (a, b) indicate statistically significant differences among treatments according to Duncan’s test (p < 0.05).
