Table 1. Summary results of AMOVA within and among geographic populations of the R. virescens species complex from Yunnan, southwestern China.

Source		d.f.	SS	MS	Estimated variance	Percentage	P
Four genes combination	Between regions	8	52.908	6.613	0.087	2%	0.090
	Among populations within regions	4	18.986	4.747	0.111	3%	0.100
	Within populations	163	556.492	3.414	3.414	95%	0.010
	Total	175	628.386	14.774	3.612
Mitochondrial genes	Between regions	8	14.269	1.784	0.029	2%	0.370
	Among populations within regions	4	5.020	1.255	0.000	0%	0.360
	Within populations	163	223.210	1.369	1.369	98%	0.240
	Total	175	242.500	4.408	1.399	100%
Nuclear genes	Between regions	8	38.638	4.830	0.058	3%	0.030
	Among populations within regions	4	13.966	3.491	0.121	5%	0.020
	Within populations	163	333.282	2.045	2.045	92%	0.010
	Total	175	385.886	10.366	2.223	100%

d.f., Degrees of freedom; SS, sum of squared observations; MS, mean of squared observations; Est. var., estimated variance; % Var., percentage of total variance; PhiRT, proportion of the total genetic variance between regions; PhiPR, proportion of the total genetic variance among populations within a region; PhiPT, proportion of the total genetic variance among individuals within populations.