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DArTseq-based genome-wide SNP markers reveal limited genetic diversity and highly structured population in assembled West African cowpea germplasm

dc.contributor.authorKoura, A.A.
dc.contributor.authorKena, A.W.
dc.contributor.authorAnnor, B.
dc.contributor.authorAdejumobi, I.I.
dc.contributor.authorMaina, F.
dc.contributor.authorSayadi Maazou, A.R.
dc.contributor.authorRazakou, I.B.Y.
dc.contributor.authorAttamah, P.
dc.contributor.authorKusi, F.
dc.contributor.authorBoukar, O.
dc.contributor.authorAkromah, R.
dc.date.accessioned2024-09-02T14:09:26Z
dc.date.available2024-09-02T14:09:26Z
dc.date.issued2024-03
dc.identifier.citationKoura, A.A., Kena, A.W., Annor, B., Adejumobi, I.I., Maina, F., Sayadi Maazou, A.R., ... & Akromah, R. (2024). DArTseq-based genome-wide SNP markers reveal limited genetic diversity and highly structured population in assembled West African cowpea germplasm. Scientific African, 23: e02065, 1-10.
dc.identifier.issn2468-2276
dc.identifier.urihttps://hdl.handle.net/20.500.12478/8513
dc.description.abstractThe potential of cowpea (Vigna unguiculata [L] Walp) to contribute to food security and livelihood sustenance of sub-Sahara Africans is constantly threatened by many biotic and abiotic stresses that are aggravated by climate change. To address these threats, cowpea breeding programs in the subregion prioritize climate-resilience traits and resistance to biotic stresses. However, before successful trait discovery and implementation, it is essential to characterize diversity and population structure of cowpea germplasm. To test the hypothesis that assembled cowpea germplasm exhibits limited and narrow genetic diversity with a well-defined population structure, we assessed the level of genetic variability and characterized the population structure of 188 cowpea genotypes using 5147 Single Nucleotide Polymorphism (SNP) markers. The structure results revealed five major genetic groups with moderate levels of genetic diversity and an admixture level of 17 %. Discriminant analysis and phylogenetic analysis supported this finding, indicating the presence of distinct groups within the cowpea population. The analysis of molecular variance (AMOVA) showed 27 % among population variance, 64 % within-population variance, and 9 % within individual variance. While considering the origin, the AMOVA showed 16 % among population variance, 75 % among individual variance, and 9 % within individual variance. This study provides valuable insights for future cowpea improvement programs by facilitating the selection of suitable progenitors for population development, and contributing in the conservation of cowpea genetic resources. Addressing these challenges and enhancing cowpea's diversity and resilience are crucial steps towards ensuring food security and sustainable livelihoods in sub-Saharan Africa.
dc.description.sponsorshipRoyal Norwegian Embassy in Niger
dc.format.extent1-10
dc.language.isoen
dc.subjectCowpeas
dc.subjectSingle Nucleotide Polymorphisms
dc.subjectDiversity
dc.subjectGenetics
dc.titleDArTseq-based genome-wide SNP markers reveal limited genetic diversity and highly structured population in assembled West African cowpea germplasm
dc.typeJournal Article
cg.contributor.crpGrain Legumes
cg.contributor.affiliationInstitut National de la Recherche Agronomique du Niger
cg.contributor.affiliationKwame Nkrumah of Science and Technology
cg.contributor.affiliationInternational Institute for Tropical Agriculture
cg.contributor.affiliationKindo Seeds, Niger
cg.contributor.affiliationCouncil for Scientific and Industrial Research, Ghana
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryGhana
cg.coverage.hubHeadquarters and Western Africa Hub
cg.researchthemeBiotech and Plant Breeding
cg.identifier.bibtexciteidKOURA:2024b
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectAgronomy
cg.iitasubjectBiodiversity
cg.iitasubjectCowpea
cg.iitasubjectFood Security
cg.iitasubjectGenetic Improvement
cg.iitasubjectGrain Legumes
cg.journalScientific African
cg.notesOpen Access Journal
cg.accessibilitystatusOpen Access
cg.reviewstatusPeer Review
cg.usagerightslicenseCreative Commons Attribution 4.0 (CC BY 0.0)
cg.targetaudienceScientists
cg.identifier.doihttps://doi.org/10.1016/j.sciaf.2024.e02065
cg.iitaauthor.identifieridris adejumobi: 0000-0002-6533-0612
cg.iitaauthor.identifierOusmane Boukar: 0000-0003-0234-4264
cg.futureupdate.requiredNo
cg.identifier.issuee02065
cg.identifier.volume23


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