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Resistance profile of improved cassava germplasm to cassava mosaic disease in Nigeria

dc.contributor.authorEgesi, Chiedozie N.
dc.contributor.authorOgbe, F.O.
dc.contributor.authorAkoroda, M.
dc.contributor.authorIlona, P.
dc.contributor.authorDixon, A.
dc.date.accessioned2019-12-04T11:19:22Z
dc.date.available2019-12-04T11:19:22Z
dc.date.issued2007
dc.identifier.citationEgesi, C.N., Ogbe, F.O., Akoroda, M., Ilona, P. & Dixon, A. (2007). Resistance profile of improved cassava germplasm to cassava mosaic disease in Nigeria. Euphytica, 155, 215-224.
dc.identifier.urihttps://hdl.handle.net/20.500.12478/3454
dc.description.abstractCassava mosaic disease (CMD) caused by a group of begomoviruses and transmitted by whitefly vector is a serious disease in all the cassava-growing areas of Africa. Field evaluation with replication was conducted in 2003 and 2004 in three agroecologies in Nigeria to study the response of 40 cassava genotypes to CMD and to investigate genotype• environment (GE) interactions on their reactions to CMD, using the rank-sum classification and site regression analysis model. The 40 genotypes were separated into resistant (n= 17), moderately resistant (n= 6), moderately susceptible (n= 2) and susceptible (n= 15) groups. Environments, genotypes and GE interactions were all highly significant (P< 0.0001) for the virus disease contributing 9.5%, 71.36% and 19.14%, respectively to total variation. More than 40% of the genotypes were identified as resistant to the disease. Genotypes TMS 980581, TMS 993073, TMS 974763, TMS M980040, TMS 980505, TMS 970211, TMS 974769, TMS 992123, TMS M980068 and TMS 970162 were shown to have high resistance to CMD. The study also identified Umudike, in south-east Nigeria, as having high disease severity and the most appropriate site for CMD resistance screening of genotypes. Most of the genotypes exhibited stable resistance to CMD. The implication that the availability of these resistant genotypes as identified in this study could be a source of CMD resistance for further breeding is discussed.
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.subjectAfrican Cassava Mosaic Virus
dc.subjectGenotypes
dc.subjectEnvironment Interaction
dc.subjectGermplasm
dc.subjectResistance
dc.subjectManihot Esculenta
dc.titleResistance profile of improved cassava germplasm to cassava mosaic disease 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.iitasubjectPlant Production
cg.iitasubjectFood Security
cg.iitasubjectPlant Diseases
cg.iitasubjectDisease Control
cg.iitasubjectCassava
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Genetic Resources
cg.iitasubjectPests Of Plants
cg.iitasubjectAgribusiness
cg.iitasubjectLivelihoods
cg.iitasubjectGenetic Improvement
cg.accessibilitystatusLimited Access
local.dspaceid95425
cg.identifier.doihttps://doi.org/10.1007/s10681-006-9323-0


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