Fig. 6

Co-expression analysis of genes related to anthocyanin biosynthesis was conducted in five tissues of B. napus. A Modular hierarchical clustering: The co-expression modules are depicted in different colors, while gray modules indicate no correlation between genes. B Module gene clustering heatmap: The gene expression network of anthocyanin biosynthesis-related genes in different tissues was analyzed using WGCNA, leading to the clustering of genes into distinct co-expression modules. C Module-to-sample correlation heatmap: Correlation analysis was performed between the co-expression modules of various genes associated with anthocyanin biosynthesis in different tissues. The numbers above the heat map indicate the Pearson correlation coefficient (r) values. D KEGG enrichment analysis of ‘turquoise’ module. E GO enrichment analysis of ‘turquoise’ module. F Cytoscape representation of co-expression network of the hub gene in the ‘turquoise’ module