Fig. 6From: A novel efficient multi-walled carbon nanotubes/gibberellic acid composite for enhancement vase life and quality of Rosa hybrida cv. ‘Moonstone’Cut rose moonstone anthocyanin concentration in fresh rose petals (a), total phenolic content (b), and DPPH radical scavenging activity (c) as a function of holding solution with sucrose (S) or no sucrose (NS) and different pulsing solutions. The interactions are expressed as the means ± the standard error (SE). Bars with the same lowercase letters are not significantly different at the P < 0.05 level; statistics are provided in Additional file 1: Table S3Back to article page