Table 5. Evolutionary rate of full length ycf1 and IR region-located fragments of the ycf1 gene.

Species name	Full length of ycf1 gene				IR region-located fragment of ycf1 gene
	Ka	Ks	Ka/Ks	Length (bp)	Ka	Ks	Ka/Ks	Length (bp)
V. vinifera	0.159	0.350	0.455	5,565	0.175	0.439	0.400	4,536
M. indica	0.219	0.507	0.433	5,439	0.258	0.714	0.362	4,455
G. max	0.324	0.818	0.396	5,157	0.350	0.964	0.363	4,680
C. sativus	0.306	0.651	0.469	5,136	0.370	1.004	0.368	4,080
R. communis	0.219	0.556	0.393	5,244	0.265	0.814	0.325	4,077
A. thaliana	0.286	0.904	0.316	5,298	0.340	1.487	0.229	4,302
B. napus	0.288	0.921	0.313	5,241	0.341	1.563	0.218	4,239
G. hirsutum	0.224	0.603	0.371	5,523	-	-	-	82
C. arabica	0.229	0.583	0.393	5,508	0.262	0.828	0.316	4,374
O. europaea	0.200	0.503	0.398	5,526	0.228	0.708	0.321	4,458
N. tabacum	0.213	0.576	0.370	5,592	0.249	0.885	0.281	4,632
H. annuus	0.317	0.633	0.502	5,010	0.354	0.799	0.443	4,443
P. ginseng	0.223	0.449	0.496	5,487	0.280	0.593	0.472	4,029
S. indicum	0.210	0.531	0.396	5,226	0.247	0.742	0.333	4,242

Note: This analysis was performed based on re-annotation of ycf1 genes using DOGMA; the ycf1 gene of P. occidentalis (No. NC_008335) was selected as the reference gene for Ka and Ks estimation.