Additional file 20: Figure S13. Expression patterns of ROS scavenging related genes in mulberry under drought stress. The abscissa indicated the days of drought stress treatment (0d, 3d, 6d, 9d, 12d), and the ordinate indicated the relative expression level of genes. DS0 is used as reference for each gene. *, P ≤ 0.05; **, P ≤ 0.01