Figure 1.

Maximum Likelihood Tree of AGL6-like Genes in Grasses.

Numbers on branches, Bayesian posterior probabilities (>90) and likelihood bootstrap support values (>70). White arrowhead, inferred Os MADS6/Os MADS17 duplication event. Black arrowhead, an alternative hypothesis of the duplication event that cannot be rejected by Shimodaira-Hasegawa test. Black arrow indicates grass spikelet origin. Numbers in gray rectangles indicate total number of nonsynonymous substitutions and number of unique nonsynonymous substitutions. Numbers in white boxes indicate the number of unreversed nonsynonymous substitutions. Only amino acid changes of branches up to the grass subfamily levels are presented.