Table 2.

Results of RELAX analyses for relaxed or intensified selection based on genes concatenated by functional class with hemiparasites, Pedicularis and section Cyathophora as test group

		Test hemiparasite			Test Pedicularis			Test Pedicularis sect. Cyathophora
Functional gene group		Relaxation coefficient (k)	P-value	Likelihood ratio (LR)	Relaxation coefficient (k)	P-value	Likelihood ratio (LR)	Relaxation coefficient (k)	P-value	Likelihood Ratio (LR)
ATP Synthase	atp	0.93	0.427	0.63	0.88	0.172	1.86	0.78	0.248	1.33
Photosynthesis related	cemA	1.39	0.138	2.2	1.86	0.019*	5.53	2.86	0.159	1.98
	pet	0.75	0.026*	4.99	0.86	0.253	1.31	0.76	0.232	1.43
	psa	0.76	0.002**	9.45	0.8	0.009**	6.88	0.51	0.001**	11.56
	psb	0.89	0.466	0.53	0.92	0.522	0.41	1.59	0.171	1.87
	rbcL	0.47	0.13	2.3	0.38	0.096	2.78	0.24	0.347	0.88
Protein synthesis	rps	3.08	0.001**	10.5	2.3	0.029*	4.78	1.47	0.32	0.99
	rpl	0.22	0**	21.99	0.22	0**	14.25	0.7	0.726	0.12
	infA	0.34	0.029*	4.79	0.26	0.02*	5.43	0.69	0.703	0.14
Plastid-encoded RNA Polymerase	rpo	0.87	0.066	3.38	0.76	0**	14.27	1.46	0.248	1.34
‘Other’ functions	clpP	0.34	0.2	1.64	0.29	0.306	1.05	2.15	0.304	1.06
	matK	0.56	0.648	0.21	0.15	0.272	1.21	0.62	0.754	0.1
	ycf	1	0.948	0	0.98	0.627	0.24	0.43	0**	26.45

Significance levels: *P < 0.05,

** P < 0.01.