Supplementary Table S1: Accession number, pedigree information, accession’s plant introduction number, and origin of studied samples (99 accessions) are presented below. Note: The information is based on available records of napiergrass germplasm-the USDA-ARS at Tifton, GA, USA.

M X N represents Millet-Napier cross and SC represents Species Cross

S. No. / Accession number / Species or cross, identifier / PI number / Origin/donator
1 / N7 / P. purpureum J-12 / Puerto Rico
2 / N9 / P. purpureum K-11 F1 / Puerto Rico
3 / N13 / P. purpureum, USDA / PI304188
4 / N14 / P. purpureum, USDA / PI337620 / Puerto Rico
5 / N16 / P. purpureum-UF3245 / Puerto Rico
6 / N19 / P. purpureum, USDA / PI365134 / Puerto Rico
7 / N20 / P. purpureum, USDA / PI285303 / Puerto Rico
8 / N22 / P. purpureum / PI365134 / Swaziland
9 / N23 / P. purpureum / PI365135 / Swaziland
10 / N245 / P. purpureum / PI388878 / Schank
11 / N34-2 / P. purpureum / PI388888 / Schank, PR
12 / N35 / P. purpureum, T-A-25 / PI388889 / Schank
13 / N36-1 / P. purpureum, T-A-143 / PI388890 / Schank
14 / MN27-8 / Millet-Napier hybrid
15 / N37 / P. purpureum, T-A-144 / PI388891 / Schank
16 / N41 / P. purpureum, Turrialba, / PI388895 / Schank(Costa Rica)
17 / N42 / P. purpureum, Vrukwona / PI38896 / Schank
18 / N43 / P. purpureum, Merkeron (Tift.)
19 / N51 / P. purpureum, Railroad napier
20 / N56 / Pennisetumrupelli
21 / N66 / P. purpureum,Taiwan 25 / Schank(Taiwan)
22 / N67 / P. purpureum, Cachoeria / ITEPT # 21 / Schank
23 / N68 / P. purpureum, Cachoeria / ITEPT # 19 / Schank
24 / N69 / P. purpureum, Cameron # 4 / Schank
25 / N70 / P. purpureum, Taiwan 146 / Schank(Taiwan)
26 / N71 / P. purpureum, Taiwan 146 / Schank(Taiwan)
27 / N72 / P. purpureum, Merkeron / MENLO (UF 21-5) / Schank
28 / N73 / P. purpureum, Merkeron / MENLO (UF 21-5) / Schank
29 / N74 / P. purpureum / PI201209 / Schank
30 / N75 / P. purpureum, Dwarf Volunteer At Dump (1977)
31 / N109 / Spain Napier – Burton, 1979 / Spain
32 / N114 / 81-D61-2 Dwarf (Merk X N74)
33 / N116 / 81-D63-1 Dwarf (Merk X N74)
34 / N122 / 81-23A X N16 Survived 1981-82, winter (5F)(Pearl millet X napier) / Engineer yield trial
35 / N126 / 81-D60-1 / Dwarf napier select
36 / N127 / 81-D61-4 / Dwarf napier plant
37 / N128 / 81-D62-1 / Dwarf napier plant
38 / N129 / 81-D66-1 / Dwarf napier plant
39 / N130 / NB21 Museum Plot, Central Exp. Station. Centeno Trinidad / Trinidad
40 / N131 / P. purpureum / From Mike Aken, Nigeria, 2/83
41 / N132 / P. purpureum Merkeron Puerto Rico. / From seed-Coimbatore, India A4/83
42 / N137 / P. purpureum Kenya Uganda 52507
43 / N138 / P. purpureum, Kenya Congo Kinsshasha 54197
44 / N146 / Kenya 2 Kitale, Kenya / Ibrahim-1983
45 / N147 / Kenya 3 Kitale, Kenya / Ibrahim-1983
46 / N150 / Kenya 6 Kitale, Kenya / Ibrahim-1983
47 / N151 / Kenya 7 Kitale, Kenya / Ibrahim-1983
48 / N152 / Kenya 8 Kitale, Kenya / Ibrahim-1983
49 / N155 / Kenya 11 Kitale, Kenya / Ibrahim-1983
50 / N157 / Kenya 13 Kitale, Kenya / Ibrahim-1983
51 / N158 / Kenya 14 Kitale, Kenya / Ibrahim-1983
52 / N161 / Kenya 17 Kitale, Kenya / Ibrahim-1983
53 / N163 / Kenya 19 Kitale, Kenya / Ibrahim-1983
54 / N164 / Kenya 20 Kitale, Kenya / Ibrahim-1983
55 / N166 / Kenya 22 Kitale, Kenya / Ibrahim-1983
56 / N168 / Kenya 24 Kitale, Kenya / Ibrahim-1983
57 / N169 / Kenya 25 Kitale, Kenya / Ibrahim-1983
58 / N170 / Kenya 26 Kitale, Kenya / Ibrahim-1983
59 / N171 / Kenya 27 Kitale, Kenya / Ibrahim-1983
60 / N172 / Misc # 2 / Peter Tai
61 / N178 / PS400 / Kenya
62 / N179 / PS401 / Kenya
63 / N180 / PS403 / Kenya
64 / N181 / PS404 / Kenya
65 / N182 / PS406 / Kenya
66 / N185 / PS411 / Kenya
67 / N186 / PS414 / Kenya
68 / N187 / PS371
69 / N188 / PS372
70 / N190 / PS300086 / Shank
71 / N198 / Dwarf crossroads merkeron F2
72 / N199 / Dwarf crossroads merkeron F2
73 / N215 / Crossroads Merkeron F2
74 / N222 / Dwarf Selection Merk
75 / N233 / Dwarf F1 23DA (cytoplasmic male-sterile pearl millet inbred) X N75
76 / N236 / Q26780 / Gil Lovell
77 / N239 / Q29158 / Gil Lovell
78 / N242 / Mott X N190 / Gordon Prine
79 / N243 / Shank SW Field / Gordon Prine
80 / N244 / Shank NW Field / Gordon prine
81 / N24-1 / Cachoeira do itapemirim / PI388878 / Schank
82 / N24-6 / Cachoeira do itapemirim / PI388878 / Schank
83 / N24-7 / Cachoeira do itapemirim / PI388878 / Schank
84 / N24-8 / Cachoeira do itapemirim / PI388878 / Schank
85 / N34-1 / PI388888 / Puerto Rico/Schank
86 / N39-1 / Taiwan A-148 / PI388893 / Schank
87 / N39-2 / Taiwan A-148 / PI388893 / Schank
88 / N39-3 / Taiwan A-148 / PI388893 / Schank
89 / SC1125-2
90 / SC1125-3 / Merkeron X PS262 (Purp. X Squam.)
91 / SC1332-1 / 93 Millet X MN 16-8 (N16X23B)
92 / SC1353-1 / MN27(N16X23B) X MN4 (23A X N39-2)
93 / SC1353-2 / MN27(N16X23B) X MN4 (23A X N39-2)(23A and 23B are CMS counterparts of millet)
94 / SC1353-3 / MN27(N16X23B) X MN4 (23A X N39-2)(23A and 23B are CMS counterparts of millet)
95 / SC1353-5 / MN27(N16X23B) X MN4 (23A X N39-2) (23A and 23B are CMS counterparts of millet)
96 / MN27-3 / Millet-Napier hybrid
97 / MN27-4 / Millet-Napier hybrid
98 / MN27-7 / Millet-Napier hybrid
99 / PP19 / A pure cross of P. purpureum / Schank