Appendix 1.

Xanthosoma sagittifolium specimens used in this study. All specimens were conserved as living accessions at the Vanuatu Agricultural Research and Technical Centre (VARTC), Vanuatu; at the University of Ouagadougou, Burkina Faso; and at the Central Tuber Crops Research Institute (CTCRI), India.

Collection no.	Locality (GPS coordinates)
MZN 28	Batié, Burkina Faso (09°59.496′N, 002°55.978′W)
BDG 11a	Bérégadougou, Burkina Faso (10°43.393′N, 004°44.780′W)
BDG 11b	Bérégadougou, Burkina Faso (10°43.393′N, 004°44.780′W)
MDD 1	Middebdo, Burkina Faso (09°59.258′N, 003°08.482′W)
TNS 1	Tansié, Burkina Faso (10°51.717′N, 003°14.135′W)
CAD 1a	Cascade Bo, Burkina Faso (10°43.213′N, 004°44.745′W)
CAD 1b	Cascade Bo, Burkina Faso (10°43.213′N, 004°44.745′W)
CAD 1	Cascade Bo, Burkina Faso (10°43.213′N, 004°44.745′W)
CAD 2	Cascade, Burkina Faso (10°43.261′N, 004°44.650′W)
CAD 3a	Séréfédougou, Burkina Faso (10°43.401′N, 004°42.089′W)
CAD 3b	Séréfédougou, Burkina Faso (10°43.401′N, 004°42.089′W)
DTA 1	Diatara, Burkina Faso (09°52.813′N, 002°55.980′W)
CAD 4a	Cascade Bo, Burkina Faso (10°43.305′N, 004°44.801′W)
CAD 4b	Cascade Bo, Burkina Faso (10°43.305′N, 004°44.801′W)
GUR 1	Guiéri, Burkina Faso (10°58.384′N, 005°02.149′W)
CAD 5a	Cascade Bo, Burkina Faso (10°44.717′N, 004°43.226′W)
CAD 5b	Cascade Bo, Burkina Faso (10°44.717′N, 004°43.226′W)
CAD 6	Banfora, Burkina Faso (10°36′N, 004°45′W)
Xs1	Vanuatu (unknown)
Xs2	Vanuatu (unknown)
Xs3	Vanuatu (unknown)
Xs4	Vanuatu (unknown)
Xs5	Vanuatu (unknown)
Xs6	Vanuatu (unknown)
Xs7	Vanuatu (unknown)
Xs8	Vanuatu (unknown)
Xs9	Vanuatu (unknown)
Xs10	Vanuatu (unknown)
Xs Hyb 1	Vanuatu (unknown)
Xs Hyb 102	Vanuatu (unknown)
Xs Hyb 157	Vanuatu (unknown)
Xs Hyb 180	Vanuatu (unknown)
Xs Hyb 184	Vanuatu (unknown)
Xs Hyb 210	Vanuatu (unknown)
Xs Hyb 227	Vanuatu (unknown)
CTCRI_IND_19	India (unknown)