Table 3.

Evaluation of the identification capability of thirteen regions among four genera in subfamily Zingiberoideae

Species	Bootstrap values of thirteen regions on ML trees
	matK	ndhF	ycf1	trnK-UUU-CDS1-rps16-CDS2	psaJ -rpl33	ycf4 -cemA	trnT-UGU-trnL-UAA-CDS1	trnT-GGU-psbD	rpl32-trnL-UAG	psbM-trnD-GUC	ndhF -rpl32	rps15 -ycf1①	ccsA -ndhD
G. lancangensis	62	56	66	95	64	59	60	71	92	85	56	92	93
G. marantina	99	100	99	92	80	100	92	87	98	100	99	87	71
G. multiflora	99	56	100	99	98	82	99	71	92	99	56	98	71
G. schomburgkii	89	99	99	92	98	72	99	28	100	75	91	89	96
G.schomburgkii var. angustata	89	99	99	92	98	72	99	28	100	75	91	89	96
H. coccineum	28	100	50	36	90	99	88	73	69	63	89	42	88
H. coronarium	100	27	100	36	20	26	100	100	99	100	100	26	20
H. neocarneum	28	24	82	71	17	70	30	54	29	28	31	26	14
H. spicatum	72	27	82	71	20	70	30	73	29	28	31	62	20
K. galanga	40	86	98	58	61	72	99	93	33	7	94	60	35
K. elegans	95	86	98	96	61	38	99	93	33	22	94	53	35
K. rotunda ‘Red Leaf’	96	100	100	99	97	95	87	99	82	97	87	93	62
K. rotunda ‘Silver Diamonds’	96	100	100	99	97	95	87	99	82	97	87	93	62
Z. montanum	63	55	56	87	84	72	84	98	54	63	56	61	35
Z. officinale	49	87	80	98	60	95	61	75	13	41	27	61	43
Z. recurvatum	85	94	100	93	94	93	100	94	91	81	44	47	21
Z. spectabile	63	98	56	86	60	72	81	64	13	89	20	53	35
Z. zerumbet	88	98	56	86	84	72	84	64	54	89	20	55	40
ratio(%)	77.78	83.33	100	88.89	83.33	88.89	88.89	88.89	66.67	72.22	66.67	77.78	44.44

Note: ratio (%) = [(the total number of species-the number of species with bootstrap values below 50%) /the total number of species] × 100%; ①: ycf1 is here a protein coding gene in chloroplast genome. The sequenced species in this study were marked in bold