Fig. 1

Analysis of SG4-like-MYB expression and anthocyanin/PA content at the flowering stage. a Heat map of SG4-like-MYBs. Each column represents one tissue, and each line represents one gene that is displayed on the right. The colour intensity of the blue and red rectangles reflect low and high Z-scores for mRNA accumulation. b Expression pattern of SG4-like-MYBs. FtH3 was used as a reference gene. The accumulation of each SG4-like-MYB mRNA in the stems was defined as “1” for each developmental stage. Means were calculated from three repeats, and error bars reflect ±SDs. c Anthocyanin/PA content in different tissues