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Genetic variation and genotype X environment interaction for yield and other agronomic traits in cassava in Nigeria

dc.contributor.authorEgesi, Chiedozie N.
dc.contributor.authorIlona, P.
dc.contributor.authorOgbe, F.O.
dc.contributor.authorAkoroda, M.
dc.contributor.authorDixon, A.
dc.date.accessioned2019-12-04T11:19:28Z
dc.date.available2019-12-04T11:19:28Z
dc.date.issued2007
dc.identifier.citationEgesi, C.N., Ilona, P., Ogbe, F.O., Akoroda, M. & Dixon, A. (2007). Genetic variation and genotype× environment interaction for yield and other agronomic traits in cassava in Nigeria. Agronomy Journal, 99, 1137-1142.
dc.identifier.issn0002-1962
dc.identifier.urihttps://hdl.handle.net/20.500.12478/3470
dc.description.abstractThe identification of superior genotypes and mega-environments on the basis of multiple traits is a key objective of multi-environment trials in cassava (Manihot esculenta Crantz). The objective of this study was to examine the genetic variation and genotype 3 environment interaction (GEI) effects for fresh root yield, six other agronomic traits, and severity ratings for cassava mosaic disease (CMD) and cassava green mite (CGM) in 40 genotypes of cassava. Experiments were conducted using a randomized complete-block design with four replications for 2 yr in three representative agro-ecological zones in Nigeria. Site regression (SREG) analysis revealed that GEI was a major source of fresh root yield variation and the different testing sites discriminated among the genotypes. Genotypes TMS 980581, TMS 974763, TMS 980002, TMS 993073, and M980068 were highest yielding at Otobi and Umudike, whereas TMS 980510, TMS 974779, and TMS 92B00068 yielded the most at Ishiagu. TMS 982226, TMS 920325, and M980028 had the poorest performance across all locations. Genotypes with the highest yield showed the lowest CMD scores, whereas very tall (well above 2 m) plants had low harvest index on the basis of multiple trait analysis. We identified optimally adapted genotypes for commercial cassava production in different areas in Nigeria.
dc.description.sponsorshipNiger Delta Development Commission
dc.description.sponsorshipNigerian National Petroleum Corporation
dc.description.sponsorshipShell Petroleum Development Company
dc.description.sponsorshipUnited States Agency for International Development
dc.language.isoen
dc.subjectCassava
dc.subjectGenotypes
dc.subjectAfrican Cassava Mosaic Virus
dc.subjectCassava Green Mite
dc.subjectFresh Root Yield
dc.subjectMultiple Trait
dc.subjectGenetic Variation
dc.subjectAgro-Ecologies
dc.titleGenetic variation and genotype X environment interaction for yield and other agronomic traits in cassava in Nigeria
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.affiliationNational Root Crops Research Institute, Nigeria
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryNigeria
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectGenetic Improvement
cg.iitasubjectPests Of Plants
cg.iitasubjectPlant Diseases
cg.iitasubjectPlant Production
cg.iitasubjectFood Security
cg.iitasubjectHandling, Transport, Storage And Protection Of Agricultural Products
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Genetic Resources
cg.iitasubjectAgribusiness
cg.iitasubjectDisease Control
cg.iitasubjectCassava
cg.iitasubjectLivelihoods
cg.accessibilitystatusLimited Access
local.dspaceid95441
cg.identifier.doihttps://doi.org/10.2134/agronj2006.0291


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