Table 1. Segmental duplication events of some plant species.

Gene pairs		Anchor Numbers	Ks	Time	GWD (mya)	References
			(means ± s.d.)	(mya)
Bd3g38897	Bd4g32941	5	0.804 ± 0.149	61.8	50–70	Kellogg et al., 2001[52]; Gaut et al., 2002[53]
Os08g39140	Os09g30412	3	0.683 ± 0.200	57.1	53–94	Yu et al., 2005[34]
Os08g38086	Os09g29840	4	0.850 ± 0.162	65.4
Gm02G302500	Gm08G332900	7	0.611±0.186	50.8	5–13,59	Schmutz et al., 2010[54]
Gm08G332900	Gm14G011600	7	0.584 ± 0.146	47.9
Gm08G332900	Gm18G074100	13	0.128 ± 0.039	10.5
Gm02G302500	Gm14G011600	24	0.117 ± 0.043	9.6
Gm14G011600	Gm18G074100	6	0.608 ± 0.190	49.8
Gm02G302500	Gm18G074100	6	0.613 ± 0.193	50.8
Gm14G219700	Gm17G258700	15	0.158 ± 0.139	12.9
Gm01G068000	Gm02G124500	4	0.220 ± 0.167	18.2
Gm02G305600	Gm14G007700	19	0.098 ± 0.025	8.1
Gr003G155600	Gr004G138600	3	0.660 ± 0.147	19.6	13–20	Wang et al., 2012[55]
Gr002G103000	Gr013G150300	3	0.512 ± 0.230	17.1
Gr002G122800	Gr010G003000	3	0.605 ± 0.168	20.1

MYA: million years ago