Fig. 5From: Preharvest application of ethephon and postharvest UV-B radiation improve quality traits of beetroot (Beta vulgaris L. ssp. vulgaris) as source of colourantBetalain and total phenolic contents in 16 weeks old beetroots of ‘Monty Rz’ (a, c, e) and ‘Belushi Rz’ (b, d, f) treated with (+UV-B) or without (-UV-B) 1.23 kJ m− 2 for 70 s, followed by storage at 15 °C and 98–100% relative humidity in darkness, for 3 and 7 days. Bn: betanin content; Vx: vulgaxanthin content; Bn:Vx: betanin to vulgaxanthin ratio; TPC: total phenolic content. a, b, e, f: Different letters denote statistical significance according to Tukey’s test (p ≤ 0.05). c, d: Different letters denote statistical significance according to Nemenyi’s test (p ≤ 0.05). Data represent the mean ± SE, n = 5Back to article page