Genetic variability, inter-character correlation, and stability performance in cowpea for drought tolerance

Vista sencilla de ítem
dc.creatorSansa, O.O.
dc.creatorAriyo, O.J.
dc.creatorAyyo-Vaughan, M.A.
dc.creatorEkanem, U.O.
dc.creatorNtukidem, S.O.
dc.creatorAbberton, M.T.
dc.creatorOyatomi, O.A.
dc.date2025
dc.date2025-09-16T14:42:50Z
dc.date2025-09-16T14:42:50Z
dc.date.accessioned2026-06-27T16:06:19Z
dc.descriptionDrought has consistently threatened cowpea [Vigna unguiculata (L.) Walp] production, and it has become important to identify drought-tolerant, stable, and high-yielding accessions from cowpea germplasm to accelerate breeding of new drought-tolerant varieties for sub-Saharan Africa (SSA). This study assessed 112 cowpea accessions for drought tolerance and yield stability across three locations in 2 years using an 8 × 14 Alpha lattice design replicated thrice. Data collected were subjected to combined analysis of variance, broad-sense heritability, phenotypic, and genotypic correlations. Yield stability was assessed through the Additive Mean and Multiplicative Interaction (AMMI) and Genotype and Genotype × Environment (GGE) Biplot techniques. Significant variations were found among the accessions across the test environments for measured traits and reduction of grain yield due to water-stress. Genotypic correlations were higher in all the locations and environments. AMMI and GGE Biplot analysis both identified TVu-74 as the highest yielding accession and TVu-9913 as the most stable accession. Notable differences in response to drought stress indicated genetic variability and allowed the selection of drought tolerant accessions. The identified high-yielding and stable accessions could serve as potential parents in breeding climate-resilient cowpea varieties for SSA.
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/176514
dc.identifier.urihttp://hdl.handle.net/123456789/122663
dc.languageen
dc.publisherInforma UK Limited
dc.relationhttps://hdl.handle.net/10568/176459
dc.rightsOpen Access
dc.sourceSansa, O.O., Ariyo, O.J., Ayo-Vaughan, M.A., Ekanem, U.O., Ntukidem, S.O., Abberton, M.T. & Oyatomi, O.A. (2025). Genetic variability, inter-character correlation, and stability performance in cowpea for drought tolerance. Journal of Crop Improvement, 39(1), 43-68.
dc.subjectgermplasm
dc.subjectclimate resilience
dc.subjectgenotype environment interaction
dc.subjectfood security
dc.subjectcowpeas
dc.subjectgrain legumes
dc.subjectsub-saharan africa
dc.titleGenetic variability, inter-character correlation, and stability performance in cowpea for drought tolerance
dc.typeJournal Article

Archivos

Colecciones

Instituto Internacional de Agricultura Tropical (IITA)