Fig. 6

Storage ability of transgenic sweetpotato tuberous roots during low temperature storage. a Photographs of WT and OP tuberous roots stored at 13 °C and 4 °C for 8 weeks. b Analysis of ion leakage and c MDA contents in tuberous roots of WT and OP plants stored in 13 °C and 4 °C for 8 weeks. Data are expressed as the mean ± SD of three replicates. Asterisks indicate significant differences between WT and OP plants by ANOVA at * p < 0.05 and ** p < 0.01