Fig. 6

Co-expression analysis and WGCNA of the genes/TFs involved in epicatechin pathway and flowering regulation. a Co-expression analysis between the flowering process (the flowering activator SPLs and the flowering repressor DELLAs) and the biosynthesis of epicatechin. The heatmap was generated based on the r value. The genes or TFs that showed spatial differential expressions at more than three stages were selected for analysis. The naming rules was identical to that of Fig. 3 and Fig. 4. b Weighted gene co-expression network analysis (WGCNA) of the SPLs, DELLAs and the epicatechin biosynthetic pathway genes. Low value of clustering coefficient was indicated by dark blue. The naming rules was identical to that of Fig. 3 and Fig. 4