Figure 4

The numbers of contigs and unigenes and heatmaps of gene expression. Comparison of the numbers of contigs and unigenes in two species, S. calendulacea (A) and S. trilobata (B). Black and red bars indicate contigs and unigenes, respectively. The x-axis on the bottom shows the number of contigs and unigenes classified in each sizes range. The y-axis indicates the number of genes. Heatmap of gene expression in S. calendulacea (left) and S. trilobata (right) (C).