Table 2.

The results of positive selective pressure analysis in M2a, M7 vs. M8 model

Gene name	Model	np	LnL	ω2(M2a)	LRTs(2ΔLnL)	LRT p-value	Positive sites
accD	M8	36	− 3560.21	4.58	7.44	2.42E-2	190 C*
	M7	34	− 3563.93
matK	M8	36	− 3912.79	2.97	18.03	2.76E-4	314 Y *, 329 I*
	M7	34	− 3921.81
rbcL	M8	36	− 3096.54	17.49	54.37	0	219 C**, 225 I*, 262 V**, 328 A**
	M7	34	− 3123.73
rpoC1	M8	36	− 4177.33	78.21	96.64	0	91 Q**,150 C**, 436 K*
	M7	34	− 4225.65
rpoC2	M8	36	− 9048.76	4.59	29.53	3.86E-7	80 L**, 533 K* 553 L*, 564 D*, 876 P*, 1025 S**, 1035 L*, 1356 L*
	M7	34	− 9063.53
ndhK	M8	36	− 1464.89	5.06	15.38	4.57E-4	37 Q 0.963*,45 S 0.988*
	M7	34	− 1472.58
ndhF	M8	36	− 5328.43	7.74	8.69	1.29E-2
	M7	34	− 5332.78

*: means P < 0.05, **: means P < 0.01