Fig. 2From: Preharvest application of ethephon and postharvest UV-B radiation improve quality traits of beetroot (Beta vulgaris L. ssp. vulgaris) as source of colouranta, b Root weight and c, d transversal diameter monitored in untreated and 360 g ha− 1 ethephon-treated red beet plants (3–18 weeks after sowing). Different letters indicate statistical significance according to Tukey’s test (p ≤ 0.05). Data represent the mean ± SE, n = 3Back to article page