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In the last 45 years, IITA has played a pivotal role in the genetic improvement of cassava for resourcepoor farmers in sub-Saharan Africa (SSA). More than 400 varieties have been developed that are not only high yielding but also resistant to diseases and pests. Many of these improved varieties h...


Rabbi, Ismail Y.Gedil, M.Ferguson, M.Kulakow, P.A.[Cassava improvement in the era of "agrigenomics": the road to nextgeneration breeding.]Cassava improvement in the era of "agrigenomics": the road to nextgeneration breeding.

Yam (Dioscorea spp.), a traditional crop in Kenya has not undergone improvement and little has been done to understand its genetic background. The taxonomy and phylogeny of the local landraces has not been fully studied. The main cultivated species is Dioscorea minutiflora Engl. Others found with...


Muthamia, Z.K.Nyende, A.B.Mamati, E.G.Ferguson, M.Wasilwa, J.[Determination of ploidy among yam (Dioscorea spp.) landraces in Kenya by flow cytometry]Determination of ploidy among yam (Dioscorea spp.) landraces in Kenya by flow cytometry

Cassava brown streak disease (CBSD) is an economically important virus disease causing significant losses to cassava root yield and quality in east, central and southern Africa. Breeding for resistance in cassava requires an understanding of the underlying genetic control of CBSD resistance. Sour...


Kulembeka, H.P.Ferguson, M.Herselman, L.Kanju, E.Mkamilo, G.S.Masumba, E.Fregene, Martin A.Labuschagne, M.T.[Diallel analysis of field resistance to brown streak disease in cassava (Manihot esculenta Crantz) landraces from Tanzania]Diallel analysis of field resistance to brown streak disease in cassava (Manihot esculenta Crantz) landraces from Tanzania

Cassava (Manihot esculenta) provides calories and nutrition for more than half a billion people. It was domesticated by native Amazonian peoples through cultivation of the wild progenitor M. esculenta ssp. flabellifolia and is now grown in tropical regions worldwide. Here we provide a high-qualit...


Bredeson, J.V.Lyons, J.B.Prochnik, S.E.Wu, G.A.Ha, C.M.Edsinger-Gonzales, E.Grimwood, J.Schmutz, J.Rabbi, Ismail Y.Egezi, C.Nauluvula, P.Lebot, V.Ndunguru, J.Mkamilo, G.S.Bart, R.S.Setter, T.L.Gleadow, R.M.Kulakow, P.A.Ferguson, M.Rounsley, S.Rokhsar, D.S.[Sequencing wild and cultivated cassava and related species reveals extensive interspecific hybridization and genetic diversity]Sequencing wild and cultivated cassava and related species reveals extensive interspecific hybridization and genetic diversity

Background Production of cassava (Manihot esculenta Crantz), a food security crop in sub-Saharan Africa, is threatened by the spread of cassava brown streak disease (CBSD) which manifests in part as a corky necrosis in the storage root. It is caused by either of two virus species, Cassava brown s...


Kaweesi, T.Kawuki, R.Kyaligonza, V.Baguma, Yona K.Tusiime, GeoffreyFerguson, M.[Field evaluation of selected cassava genotypes for cassava brown streak disease based on symptom expression and virus load]Field evaluation of selected cassava genotypes for cassava brown streak disease based on symptom expression and virus load

Generation of genetic diversity is necessary in improving on the potential of cassava when faced with various biotic and abiotic challenges. Presently, cassava breeders are breeding for a number of traits, such as drought tolerance, early root bulking, yield, starch, beta-carotene, protein, dry m...


Kyaligonza, V.Kawuki, Robert S.Ferguson, M.Kaweesi, T.Baguma, Yona K.Vuzi, P.[Identification of F1 cassava (Manihot esculenta Crantz) progeny using microsatellite markers and capillary electrophoresis]Identification of F1 cassava (Manihot esculenta Crantz) progeny using microsatellite markers and capillary electrophoresis

Cassava brown streak disease (CBSD) remains a major threat to cassava production in Mozambique. Breeding for CBSD resistant varieties that are also preferred by farmers is an integral part of managing the disease. The main objective of the study was to determine the genetic relationship between f...


Oyesigye, E.Zacarias, A.Mondjana, A.Magaia, H.Ferguson, M.[Single nucleotide polymorphism (SNP) diversity of cassava genotypes in relation to cassava brown streak disease in Mozambique]Single nucleotide polymorphism (SNP) diversity of cassava genotypes in relation to cassava brown streak disease in Mozambique

Studies to quantify genetic variation in cassava germplasm, available within the national breeding programmes in Africa, have been limited. Here, we report on the nature and extent of genetic variation that exists within 1401 cassava varieties from seven countries: Tanzania (270 genotypes); Ugand...


Kawuki, Robert S.Herselman, L.Labuschagne, M.T.Nzuki, I.Ralimanana, I.Bidiaka, M.Kanyange, M.C.Gashaka, G.Masumba, E.Mkamilo, G.S.Gethi, J.Wanjala, B.W.Zacarias, A.Madabula, F.Ferguson, M.[Genetic diversity of cassava (Manihot esculenta Crantz) landraces and cultivars from southern, eastern and central Africa]Genetic diversity of cassava (Manihot esculenta Crantz) landraces and cultivars from southern, eastern and central Africa

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