Fig. 5

Weighted gene co-expression network analysis (WGCNA) of differentially expressed genes (DEGs) identified in the 6-BA treated and control buds over three sampling time points (30, 50, and 70 DAFB) during floral transition. a Hierarchical cluster tree illustrating nine modules of co-expressed genes. Each of the 8015 DEGs is represented by a leaf in the tree and each of the nine modules by a major tree branch. The lower panel illustrates the modules in assigned colors, such as ‘turquoise’, ‘red’, ‘black’, etc. Note the ‘grey’ module represents unassigned genes. b Module–trait relationships presenting the significance of the module eigengene correlation with traits. The left panel provides a color key to the nine modules. The color scale on right shows the module-trait correlation ranging from − 1 (green) to 1 (red). c The significantly enriched KEGG pathways for genes in the ‘turquoise’ and ‘blue’ modules. ‘Corrected p-values are marked on the top of each bar. d Cytoscape representation of the relationship of SOC1 to co-expressed genes enriched in hormone signal transduction pathways (edge weight ≥ 0.10) in the ‘turquoise’ module. e Cytoscape representation of the relationship of SPL9 to co-expressed genes enriched in hormone signal transduction and sugar metabolism pathways (edge weight ≥ 0.10) in the ‘blue’ module. Gene names with lowercase suffixes were used to distinguish different gene IDs with the same gene name. The corresponding gene ID is provided in Additional file: Table S7