Fig. 3

Heat map of the relative expression levels of 77 NnAP2/EFR genes during lotus rhizome formation process of temperate lotus (ZT) and tropical lotus (RT). Color scores were normalized by the log2 transformed counts of RPKM values. Expression differences in the transcripts were clustered by the hierarchical complete linkage clustering method using a Pearson correlation matrix. The heat maps were drawn using the Multi Experiment Viewer (version 4.9.0). Color blocks of different colors represent different subfamily members