Table 4.

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

Gene name/gene group	Leading to Poaceae	Internal Poaceae	Increase dN/dS	Other monocots	Increase dN/dS	Others angiosperms	Increase dN/dS
atp	0.2678	0.1077	2.49	0.1077	2.49	0.0985	2.72
ccsA	0.2234	0.1945	1.15	0.1945	1.15	0.2481	0.90
cemA	1.6600	0.2016	8.23	0.2016	8.23	0.3203	5.18
clpP	0.6711	0.1513	4.44	0.1513	4.44	0.3187	2.11
matK	0.3096	0.3502	0.88	0.3502	0.88	0.3820	0.81
ndh	0.1652	0.1483	1.11	0.1483	1.11	0.1281	1.29
pet	0.0149	0.0790	0.19	0.0790	0.19	0.0780	0.19
psa	0.0607	0.1137	0.53	0.1137	0.53	0.1336	0.45
psb	0.0532	0.1025	0.52	0.1025	0.52	0.0776	0.69
rbcL	0.0391	0.0963	0.41	0.0963	0.41	0.0889	0.44
rpl	0.3400	0.1655	2.05	0.1655	2.05	0.2034	1.67
rps	0.5426	0.1766	3.07	0.1766	3.07	0.1923	2.82
rpo	0.3207	0.1553	2.07	0.1553	2.07	0.1853	1.73
Average	0.3591	0.1571	2.0879	0.1571	2.0879	0.1888	1.6155
P-value			P = 0.2642		P = 0.2642		P = 0.5114

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)