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Cassava improvement in sub-Saharan Africa: contributions of IITA and its partners

dc.contributor.authorDixon, A.
dc.contributor.authorOkechukwu, R.U.
dc.contributor.authorSsemakula, G.N.
dc.contributor.authorHanna, R.
dc.contributor.authorThresh, J.M.
dc.contributor.authorHughes, J.
dc.contributor.authorIngelbrecht, I.
dc.contributor.authorFregene, M.
dc.contributor.authorLegg, J.P.
dc.contributor.authorMahungu, N.M.
dc.contributor.authorNweke, F.
dc.contributor.authorNtawuruhunga, Pheneas
dc.contributor.authorFauquet, C.
dc.contributor.authorManyong, Victor M.
dc.contributor.authorNeuenschwander, P.
dc.contributor.authorWhyte, J.
dc.contributor.authorWydra, K.
dc.contributor.authorAsiedu, Robert
dc.contributor.authorEgesi, Chiedozie N.
dc.contributor.authorBandyopadhyay, Ranajit
dc.contributor.authorWinter, S.
dc.contributor.authorTarawali, G.
dc.contributor.authorBokanga, M.
dc.contributor.authorEzedinma, C.
dc.contributor.authorSanni, L.O.
dc.contributor.authorFerguson, M.
dc.contributor.authorOgbe, F.O.
dc.contributor.authorAkoroda, M.
dc.contributor.authorMaziya-Dixon, B.
dc.contributor.authorIlona, P.
dc.contributor.authorEkanayake, I.J.
dc.contributor.authorAriyo, O.
dc.contributor.authorOnyeka, J.
dc.contributor.authorOtim-Nape, G.W.
dc.contributor.authorDahniya, Mohamed T.
dc.contributor.authorOrtiz, R.
dc.contributor.authorHahn, S.K.
dc.contributor.authorHartman, P.
dc.date.accessioned2019-12-04T11:20:55Z
dc.date.available2019-12-04T11:20:55Z
dc.date.issued2008
dc.identifier.citationDixon, A., Okechukwu, R.U., Ssemakula, G., Hanna, R.,Thresh, J.M., Hughes, J., … & Hartman, P. (2008). Cassava improvement in subSaharan Africa: contributions of IITA and its partners: First Scientific meeting of the Global Cassava Partnership I, Ghent, 20-24 July 2008. Belgium: IITA.
dc.identifier.urihttps://hdl.handle.net/20.500.12478/3584
dc.description.abstractCassava is well recognized for its capacity to address food needs of vulnerable communities in unstable environments in SSA. IITA and colleagues in African NARS, in collaboration with CIAT and ARIs have played leading roles in the development of improved cassava varieties which are disease and pest resistant, early maturing, and high yielding. Through a combination of conventional and new approaches, over 400 cassava genotypes have been developed. The characteristics of the new generation of cassava germplasm broke what had been an apparent yield barrier in cassava improvement increasing yields in many locations by at least 50–100% without the use of fertilizer. The improved germplasm is shared with NARS within the region as specific genotypes or improved seed populations for evaluation and selection under local conditions. Improvement programs in Africa that received these materials have tested them under local conditions, selected varieties that outperform local varieties, and released them to farmers in virtually every major cassava producing country. Today, about 30% of the area cropped with cassava in Africa is planted with improved varieties. Without the introduction of more productive cultivars with multiple diseases and pest resistance, the effective biological control of the cassava mealybug and, to a certain extent, of the green mite, cassava production in SSA would be 50% or less of what it is today. That translates to over 13 million tons of dry cassavayear, enough to meet the calorie requirements of 65 million people. The significant gains in the crop’s output in farmers’ fields are not only contributing to the African diet but also propelling commercialization of the crop. This paper highlights contributions to cassava improvement in SSA since 1970 by IITA and its partners, and suggests areas needing strengthening in the drive to produce better crop varieties for different regions and enduses in Africa.
dc.language.isoen
dc.subjectCassava
dc.subjectBreeding
dc.subjectMarkets
dc.subjectGermplasm
dc.titleCassava improvement in sub-Saharan Africa: contributions of IITA and its partners
dc.typeConference Proceedings
dc.description.versionPeer Review
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationNational Root Crops Research Institute, Nigeria
cg.contributor.affiliationInternational Center for Tropical Agriculture
cg.contributor.affiliationUniversity of Ibadan
cg.contributor.affiliationFederal University of Agriculture, Nigeria
cg.contributor.affiliationDeutsche Sammlung von Mikroorganismen und Zellkulturen
cg.contributor.affiliationAfrican Agricultural Technology Foundation
cg.contributor.affiliationMichigan State University
cg.contributor.affiliationDonald Danforth Plant Science Center
cg.contributor.affiliationWorld Vegetable Center
cg.contributor.affiliationInternational Atomic Energy Agency
cg.contributor.affiliationWorld Bank
cg.contributor.affiliationInstitute of Agricultural Research
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryNigeria
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectCassava
cg.iitasubjectPlant Breeding
cg.iitasubjectMarkets
cg.iitasubjectGenetic Improvement
cg.accessibilitystatusLimited Access
local.dspaceid95556


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