Figure 3. Weighted correlation network analysis (WGCNA) of metabolic profiles of whole tomato fruit.

Six tomato genotypes from two genetic backgrounds were analyzed by WGCNA using 46 NMR-profiled metabolites. Metabolites were clustered by expression patterns as represented by the dendrogram and correlation heat map. Clusters of like-regulated metabolites are referred to as modules by color (red, blue, turquoise). Metabolites that could not be assigned to a module are labeled gray. In the heat map, intensity of red coloring indicates strength of correlation between pairs of metabolites on a linear scale.