Research Article

Whole-Genome Duplication and Purifying Selection Contributes to the Functional Redundancy of Auxin Response Factor (ARF) Genes in Foxtail Millet (Setaria italica L.)

Figure 6

The heat map of the expression level of SiARFs in leaf, root, stem, and spica. The color from blue (1) to red (7) represents an increase in the level of gene expression.