Table 5.

The degree of rate acceleration for nonsynonymous substitutions (dN) on the branch leading to Poaceae relative to other branches in the phylogeny

Gene name/gene group	Leading to Poaceae	Internal Poaceae	Increase dN	Other monocots	Increase dN	Others angiosperms	Increase dN
atp	0.0424	0.0018	23.02	0.0073	5.83	0.0069	6.16
ccsA	0.0540	0.0049	11.06	0.0244	2.21	0.0249	2.17
cemA	0.1715	0.0040	42.70	0.0141	12.19	0.0238	7.21
clpP	0.2117	0.0025	85.63	0.0085	25.05	0.0197	10.76
matK	0.0900	0.0114	7.88	0.0386	2.33	0.0378	2.38
ndh	0.0378	0.0030	12.49	0.0109	3.47	0.1281	0.30
pet	0.0026	0.0016	1.64	0.0054	0.48	0.0053	0.48
psa	0.0107	0.0019	5.54	0.0073	1.47	0.0068	1.58
psb	0.0099	0.0022	4.40	0.0055	1.81	0.0043	2.30
rbcL	0.0128	0.0026	4.84	0.0069	1.86	0.0064	2.00
rpl	0.0962	0.0040	24.30	0.0108	8.92	0.0130	7.42
rps	0.0784	0.0032	24.43	0.0106	7.39	0.0120	6.56
rpo	0.0656	0.0041	15.96	0.0116	5.68	0.0146	4.51
Average	0.0680	0.0036	20.2983	0.0124	6.0537	0.0233	4.1396
P-value			P < 0.001**		P = 0.0056*		P = 0.0378

Asterisks show P-values that are significant after correction for multiple comparisons using Holm’s method, i.e., sequential Bonferroni correction (** α = 0.01, * α = 0.05)