Table 2. Likelihood-ratio test (LRT) statistic and parameters from Branch Model of PAML.

Gene family/subfamily	Null hypothesis		Alternative hypothesis			LRT
	-In L	ω	-In L	ω (grass)	ω (edicot)	Statistic	P
HK	11783.30	0.10	11785.01	0.10	0.13	3.42	0.18
NI	16479.90	0.06	16479.89	0.06	0.07	0.01	1.00
SPS	19549.54	0.10	19549.53	0.10	0.14	0.01	1.00
SUSY	23700.03	0.09	23700.04	0.08	0.09	0.01	1.00
SUT type1	10101.69	0.12	100094.07	N/A	0.14	15.23	4.93e–4
SUT type2	5594.01	0.29	5599.79	0.14	0.48	11.55	3.10e–3
SUT type4	4056.79	0.35	4107.06	0.10	0.76	100.54	<1.00e–12
PMT	13163.31	0.11	13172.08	0.14	0.07	17.55	1.54e–4
STP	13959.40	0.07	13903.48	0.11	0.05	111.84	<1.00e–12
ERD6-like	10500.44	0.56	10614.28	0.33	0.14	227.67	<1.00e–12
pGlcT	10476.77	0.11	10480.65	0.14	0.11	7.76	2.07e–2
INT	7717.63	0.08	7722.22	0.10	0.03	9.18	1.02e–2
TMT	11508.87	0.11	11308.87	0.11	0.16	400.00	<1.00e–12
VGT	9974.43	0.14	9797.18	0.13	0.15	6.01	0.05