Fig. 3

Heat map of hierarchically clustered inflorescence unigenes. Absolute values of transcript per million normalized gene expression ranged from a minimum of two-fold to > 3000-fold change in expression relative to controls (FDR p < 0.05). Columns represent log₂-fold expression values of all biological replicates in developing inflorescences (Table 5). Clustering utilized transcript per million (TPM) normalized expression values to iteratively calculate pair-wise manhattan distances between all clusters and joining clusters of proximity. Branch length represents the distance between clusters and reflects the similarity of expression profiles for co-expressed genes within the two clusters