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Performance and stability of improved cassava (Manihot esculenta Crantz) clones in demand creation trials in Nigeria

dc.contributor.authorOgwuche, T.O.
dc.contributor.authorDiebiru-Ojo, E.M.
dc.contributor.authorAdetoro, N.A.
dc.contributor.authorOssai, C.
dc.contributor.authorEkanem, U.O.
dc.contributor.authorAdegbite, B.
dc.contributor.authorOyebode, G.
dc.contributor.authorKulakow, P.
dc.date.accessioned2023-10-11T14:45:50Z
dc.date.available2023-10-11T14:45:50Z
dc.date.issued2023-08-02
dc.identifier.citationOgwuche, T.O., Diebiru-Ojo, E.M., Adetoro, N.A., Ossai, C., Ekanem, U.O., Adegbite, B., ... & Kulakow, P. (2023). Performance and stability of improved cassava (Manihot esculenta Crantz) clones in demand creation trials in Nigeria. Crops, 3(3), 209-219.
dc.identifier.issn2673-7655
dc.identifier.urihttps://hdl.handle.net/20.500.12478/8273
dc.description.abstractCassava fresh root yield and dry matter content constitute major determinants of demand by end-users. Increased demand for the seeds of improved varieties will facilitate the development of a sustainable seed system. However, for wide acceptability, there is a need to continuously evaluate candidate varieties for stability across different agroecological zones. Participatory Demand Creation Trials (DCTs) were established to evaluate cassava varieties with farmers and processors utilizing the best agronomic practices. The multi-year DCTs were conducted in 20 environments (7 locations) during the 2016–2017, 2017–2018, 2018–2019, and 2019/2020 cropping seasons with two replications. The plot sizes were 320 m2 with a spacing of 1 m × 0.8 m. The traits evaluated were Plant Vigor (PV), root number, fresh yield, dry yield, Dry Matter Content (DMC), and bundle estimation. The traits were subjected to a GGE biplot in R software to identify high-yielding and stable genotypes. Results obtained from the 20 environments showed that genotype (G), environment (E), and GXE interaction effects were significant (p < 0.01) for all the traits but PV. The heritability ranged from 56% (PV) to 96% (DMC). The average fresh yield t/ha ranged from 25.5 (IBA30572) to 35.4 (IBA980505). The DMC ranged from CR36/5 (36.1%) to IBA010040 (30.7%). The dry yield ranged from 8.8% (IBA30572) to 11.4 (IBA980505). Estimated bundles ranged from 13.5 (CR36-5) to 15.7 (IBA950289). Three varieties, IBA961632, TMEB419, and CR36/5, were identified as the most promising high dry matter content varieties for cassava processors and farmers in Nigeria, and genotype IBA961632 was the most stable. The study revealed greater genotypic effects than from the environment and high genetic advances.
dc.description.sponsorshipBill & Melinda Gates Foundation
dc.format.extent209-219
dc.language.isoen
dc.subjectSeed Systems
dc.subjectCassava
dc.subjectFood Security
dc.subjectNigeria
dc.subjectDemand
dc.subjectClones
dc.titlePerformance and stability of improved cassava (Manihot esculenta Crantz) clones in demand creation trials in Nigeria
dc.typeJournal Article
cg.contributor.crpRoots, Tubers and Bananas
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationAuburn University
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryNigeria
cg.coverage.hubHeadquarters and Western Africa Hub
cg.researchthemeBiotech and Plant Breeding
cg.identifier.bibtexciteidOGWUCHE:2023
cg.isijournalISI Journal
cg.authorship.typesCGIAR and advanced research institute
cg.iitasubjectAgronomy
cg.iitasubjectCassava
cg.iitasubjectFood Security
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Production
cg.journalCrops
cg.notesOpen Access Journal; Published online: 02 Aug 2023
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/crops3030020
cg.iitaauthor.identifierPeter Kulakow: 0000-0002-7574-2645
cg.futureupdate.requiredNo
cg.identifier.issue3
cg.identifier.volume3


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