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Assessing the impact of genotype-by-environment interactions on agronomic traits in elite cowpea lines across agro-ecologies in Nigeria

dc.contributor.authorPopoola, B.
dc.contributor.authorOngom, P.O.
dc.contributor.authorMohammed, S.B.
dc.contributor.authorTogola, A.
dc.contributor.authorIshaya, D.J.
dc.contributor.authorBala, G.
dc.contributor.authorFatokun, C.
dc.contributor.authorBoukar, O.
dc.date.accessioned2024-03-21T10:04:10Z
dc.date.available2024-03-21T10:04:10Z
dc.date.issued2024
dc.identifier.citationPopoola, B., Ongom, P.O., Mohammed, S.B., Togola, A., Ishaya, D.J., Bala, G., ... & Boukar, O. (2024). Assessing the impact of genotype-by-environment interactions on agronomic traits in elite cowpea lines across agro-ecologies in Nigeria. Agronomy, 14(2): 263, 1-16.
dc.identifier.issn2073-4395
dc.identifier.urihttps://hdl.handle.net/20.500.12478/8448
dc.description.abstractThe yield of cowpea varieties is affected by environmental variability. Hence, candidate varieties must be tested for yield stability before release. This study assessed the impacts of genotypes, environments, and their interaction on the performance of elite cowpea lines for key adaptive, grain yield, and associated traits across different locations. A total of 42 elite genotypes were evaluated in five Nigerian environments, representing various savanna ecologies, during the 2021 growing season. The experimental design employed was an alpha lattice arrangement, with each genotype replicated three times. The results revealed significant differences among genotypes, environments, and genotype-by-environment interaction (G × E) for most traits, including days to maturity, 100-seed weight, and grain yield. The genotype and genotype-by-environment interaction (GGE) biplot showed G21 (IT14K-2111-2) and G25 (IT15K-2386-1) as the most stable genotypes across the five environments, G41 (IT11K-61-82) was best adapted to Ibadan and Shika, G5 (245-1) was best adapted to Bagauda and Gumel, and G30 (IT16K-2365-1) was best adapted to Bauchi. G21 (IT14K-2111-2) and G25 (IT15K-2386-1) could be recommended across the five test environments, whereas G41 (IT11K-61-82), G30 (IT16K-2365-1), and G5 (245-1) were specific to the adapted environments.
dc.description.sponsorshipBill & Melinda Gates Foundation
dc.format.extent1-16
dc.language.isoen
dc.subjectCowpeas
dc.subjectGrain Legumes
dc.subjectVarieties
dc.subjectGenotypes
dc.subjectStability
dc.titleAssessing the impact of genotype-by-environment interactions on agronomic traits in elite cowpea lines across agro-ecologies in Nigeria
dc.typeJournal Article
cg.contributor.crpGrain Legumes
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryNigeria
cg.coverage.hubHeadquarters and Western Africa Hub
cg.researchthemeBiotech and Plant Breeding
cg.researchthemePlant Production and Health
cg.identifier.bibtexciteidPOPOOLA:2024
cg.isijournalISI Journal
cg.authorship.typesCGIAR Single Centre
cg.iitasubjectAgronomy
cg.iitasubjectCowpea
cg.iitasubjectFood Security
cg.iitasubjectGenetic Improvement
cg.iitasubjectGrain Legumes
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Genetic Resources
cg.iitasubjectPlant Production
cg.journalAgronomy
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/10.3390/agronomy14020263
cg.iitaauthor.identifierPatrick Ongom: 0000-0002-5303-3602
cg.iitaauthor.identifierAbou TOGOLA: 0000-0001-6155-8292
cg.iitaauthor.identifierChristian Fatokun: 0000-0002-8428-7939
cg.iitaauthor.identifierOusmane Boukar: 0000-0003-0234-4264
cg.futureupdate.requiredNo
cg.identifier.issue2: 263
cg.identifier.volume14
cg.contributor.acknowledgementsThe authors appreciate the Bill & Melinda Gates Foundation (BMGF) through the Accelerated Varietal Improvement and Seed Delivery of Legumes and Cereals in Africa (AVISA) project and the Accelerated Breeding Initiative funds from the International Institute of Tropical Agriculture (IITA).


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