Identification of QTLs with effects on seed coat appearance in cowpea
Cowpea (Vigna unguiculata [L.] Walp.) is a key protein source in sub-Saharan Africa, and seed coat appearance traits such as pigmentation and texture are critical for market segments (MS). We investigated the genetic basis of these traits using 316 recombinant inbred lines derived from a cross betwe...
| Autores principales: | , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
2025
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/177652 |
| _version_ | 1855542176385073152 |
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| author | Sodo, A.M.I. Fatokun, C. Olasanmi, B. Ongom, P.O. Dieng, I. Boukar, O. |
| author_browse | Boukar, O. Dieng, I. Fatokun, C. Olasanmi, B. Ongom, P.O. Sodo, A.M.I. |
| author_facet | Sodo, A.M.I. Fatokun, C. Olasanmi, B. Ongom, P.O. Dieng, I. Boukar, O. |
| author_sort | Sodo, A.M.I. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Cowpea (Vigna unguiculata [L.] Walp.) is a key protein source in sub-Saharan Africa, and seed coat appearance traits such as pigmentation and texture are critical for market segments (MS). We investigated the genetic basis of these traits using 316 recombinant inbred lines derived from a cross between the landrace RP270 (white coat – colorless eye) and the improved variety CB27 (white coat – black seed eye) over two years under regular rainfed conditions. A panel of 2602 high-quality DArTag single nucleotide polymorphisms (SNPs) was used to genotype the RIL population. A total of 30 main QTLs associated with seed coat appearance were identified with phenotypic variation explained ranging from 1.2% to 78.4%. Epistatic analysis revealed 116 significant digenic interactions, highlighting the complex inheritance of pigmentation traits. Based on gene ontology and available literature, we highlighted 12 candidate genes involved in the regulation of seed coat pigmentation in cowpea grains. These findings provide a basis for further research on the genetics of cowpea pigmentation and support future work on map-based cloning of candidate genes and marker-assisted cowpea breeding programs. |
| format | Journal Article |
| id | CGSpace177652 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| record_format | dspace |
| spelling | CGSpace1776522025-11-11T11:06:42Z Identification of QTLs with effects on seed coat appearance in cowpea Sodo, A.M.I. Fatokun, C. Olasanmi, B. Ongom, P.O. Dieng, I. Boukar, O. cowpeas pigmentation candidate genes Cowpea (Vigna unguiculata [L.] Walp.) is a key protein source in sub-Saharan Africa, and seed coat appearance traits such as pigmentation and texture are critical for market segments (MS). We investigated the genetic basis of these traits using 316 recombinant inbred lines derived from a cross between the landrace RP270 (white coat – colorless eye) and the improved variety CB27 (white coat – black seed eye) over two years under regular rainfed conditions. A panel of 2602 high-quality DArTag single nucleotide polymorphisms (SNPs) was used to genotype the RIL population. A total of 30 main QTLs associated with seed coat appearance were identified with phenotypic variation explained ranging from 1.2% to 78.4%. Epistatic analysis revealed 116 significant digenic interactions, highlighting the complex inheritance of pigmentation traits. Based on gene ontology and available literature, we highlighted 12 candidate genes involved in the regulation of seed coat pigmentation in cowpea grains. These findings provide a basis for further research on the genetics of cowpea pigmentation and support future work on map-based cloning of candidate genes and marker-assisted cowpea breeding programs. 2025 2025-11-06T20:26:59Z 2025-11-06T20:26:59Z Journal Article https://hdl.handle.net/10568/177652 en Open Access application/pdf Sodo, A.M.I., Fatokun, C., Olasanmi, B., Ongom, P.O., Dieng, I. & Boukar, O. (2025). Identification of QTLs with effects on seed coat appearance in cowpea. PLoS ONE, 20(10): e0333353, 1-19. |
| spellingShingle | cowpeas pigmentation candidate genes Sodo, A.M.I. Fatokun, C. Olasanmi, B. Ongom, P.O. Dieng, I. Boukar, O. Identification of QTLs with effects on seed coat appearance in cowpea |
| title | Identification of QTLs with effects on seed coat appearance in cowpea |
| title_full | Identification of QTLs with effects on seed coat appearance in cowpea |
| title_fullStr | Identification of QTLs with effects on seed coat appearance in cowpea |
| title_full_unstemmed | Identification of QTLs with effects on seed coat appearance in cowpea |
| title_short | Identification of QTLs with effects on seed coat appearance in cowpea |
| title_sort | identification of qtls with effects on seed coat appearance in cowpea |
| topic | cowpeas pigmentation candidate genes |
| url | https://hdl.handle.net/10568/177652 |
| work_keys_str_mv | AT sodoami identificationofqtlswitheffectsonseedcoatappearanceincowpea AT fatokunc identificationofqtlswitheffectsonseedcoatappearanceincowpea AT olasanmib identificationofqtlswitheffectsonseedcoatappearanceincowpea AT ongompo identificationofqtlswitheffectsonseedcoatappearanceincowpea AT diengi identificationofqtlswitheffectsonseedcoatappearanceincowpea AT boukaro identificationofqtlswitheffectsonseedcoatappearanceincowpea |