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dc.contributor.authorMekonnen, T.W.
dc.contributor.authorMekbib, F.
dc.contributor.authorAmsalu, B.
dc.contributor.authorGedil, M.
dc.contributor.authorLabuschagne, M.
dc.date.accessioned2022-10-12T09:24:44Z
dc.date.available2022-10-12T09:24:44Z
dc.date.issued2022
dc.identifier.citationMekonnen, T.W., Mekbib, F., Amsalu, B., Gedil, M. & Labuschagne, M. (2022). Genotype by environment interaction and grain yield stability of drought tolerant cowpea landraces in Ethiopia. Euphytica, 218(5), 1-13.
dc.identifier.issn0014-2336
dc.identifier.urihttps://hdl.handle.net/20.500.12478/7862
dc.description.abstractCowpea is one of the most important indigenous food and forage legumes in Africa. It serves as a primary source of protein for poor farmers in drought-prone areas of Ethiopia. The crop is used as a source of food, and insurance crop during the dry season. Cowpea is adaptable to a wide range of climatic conditions. Despite this, the yield of the crop is generally low due to lack of stable and drought-tolerant varieties. In this study, 25 cowpea genotypes were evaluated in five environments using a lattice design during the 2017 and 2018 main cropping seasons. The objectives of this study were to estimate the magnitude of genotype by environment interaction (GEI) and grain yield stability of selected drought-tolerant cowpea genotypes across different environments. The additive main effect and multiplicative interaction (AMMI) model indicated the contribution of environment, genotype and GEI as 63.98, 2.66% and 16.30% of the total variation for grain yield, respectively. The IPCA1, IPCA2 and IPCA3 were all significant and explained 45.47%, 28.05% and 16.59% of the GEI variation, respectively. The results from AMMI, cultivar superior measure, genotype plus genotype-by-environment biplot yield stability index, and AMMI stability value analyses identified NLLP-CPC-07-145-21, NLLP-CPC-103-B and NLLP_CPC-07-54 as stable and high yielding genotypes across environments. Thus, these genotypes should be recommended for release for production in drought-prone areas. NLLP-CPC-07-143, Kanketi and CP-EXTERETIS were the least stable. The AMMI1 biplot showed that Jinka was a high potential and favorable environment while Babile was an unfavorable environment for cowpea production.
dc.description.sponsorshipThe McKnight Foundation
dc.format.extent1-13
dc.language.isoen
dc.subjectCowpeas
dc.subjectEnvironment
dc.subjectGenotypes
dc.subjectYields
dc.subjectEthiopia
dc.subjectAmmi
dc.titleGenotype by environment interaction and grain yield stability of drought tolerant cowpea landraces in Ethiopia
dc.typeJournal Article
cg.contributor.crpMaize
cg.contributor.crpRoots, Tubers and Bananas
cg.contributor.affiliationUniversity of the Free State
cg.contributor.affiliationHaramaya University
cg.contributor.affiliationMelkassa Agricultural Research Center
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.coverage.regionAfrica
cg.coverage.regionEast Africa
cg.coverage.countryEthiopia
cg.coverage.hubHeadquarters and Western Africa Hub
cg.researchthemeBiotech and Plant Breeding
cg.identifier.bibtexciteidMEKONNEN:2022
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectAgronomy
cg.iitasubjectCowpea
cg.iitasubjectFood Security
cg.iitasubjectGrain Legumes
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Production
cg.iitasubjectSmallholder Farmers
cg.iitasubjectValue Chains
cg.journalEuphytica
cg.notesOpen Access Article; Published online: 12 Apr 2022
cg.accessibilitystatusOpen Access
cg.reviewstatusPeer Review
cg.usagerightslicenseCreative Commons Attribution 4.0 (CC BY 0.0)
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.1007/s10681-022-03011-1
cg.iitaauthor.identifierMelaku Gedil: 0000-0002-6258-6014
cg.futureupdate.requiredNo
cg.identifier.issue5
cg.identifier.volume218


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