Table 1.

Divergence dates of parental genomes of allopolyploids, and 95% highest posterior density (HPD) values

Labeled event	Taxon	Divergence of parental genomes, Mya	95% HPD
1	Chrysopogon gryllus	8.4	10.6	4.1
2	Zea-Tripsacum	13.6	18.2	9.1
3	Apocopis intermedius	4.7	6.3	2.4
4	Miscanthus sinensis	7.4	9.4	3.7
5	Miscanthus-Saccharum	3.8	6.2	2.0
6	Polytrias indica	3.4	5.8	1.9
7	Ischaemum santapaui	2.3	3.4	0.9
8	Dimeria fuscescens	4.2	7.9	3.4
9	Hyparrhenia diplandra	4.2	6.1	1.9
10	Hyparrhenia rufa (153)	7.0	8.3	3.8
11	Hyparrhenia rufa (108)	7.0	8.3	3.8
12	Hyparrhenia hirta (018, 185)	2.2	3.0	1.1
13	Schizachyrium sanguineum var. hirtiflorum	5.5	7.2	3.0
14	Schizachyrium sanguineum	4.3	6.3	2.4
15	Andropogon gerardii	8.6	10.2	4.7
16	Eulalia quadrinevis	3.8	8.6	2.9
17	Cymbopogon citratus	3.0	3.6	1.5
18	Cymbopogon parkeri	4.2	4.7	1.9
19	Themeda villosa	3.3	3.8	0.8
20	Themeda triandra	2.0	3.3	1.0
21	Capillipedium parviflorum	3.1	3.6	1.2
22	Capillipedium spicigerum	1.4	1.6	0.4
23	Bothriochloa bladhii (093, 082, 076)	7.5	9.8	5.0
24	Dichanthium annulatum	1.4	2.2	0.8
25	Bothriochloa insculpta	2.8	4.6	1.8
26	Bothriochloa bladhii (087)	8.5	11.1	5.7
27	Bothriochloa ischemum (063)	1.5	2.7	0.7
28	Bothriochloa spp.	6.0	7.3	3.4
A	Hyparrhenia hirta (185, 189, 018)	3.6	5.4	2.3
A′	Hyparrhenia hirta (018)	3.0	4.1	1.7
B	Schizachyrium sangineum	6.5	8.3	3.5
C	S. sanguineum var. hirtiflorum	9.9	11.8	5.8
D	Cymbopogon citratus	6.6	7.9	3.3
E	Bothriochloa spp.	9.4	11.8	6.1
F	Bothriochloa bladhii (093)	8.5	11.1	5.7

Numbered events indicate allotetraploids; letters indicate allohexaploids. Accession numbers in parentheses are for species represented by more than one accession.