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Cassava 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 cassav...


Egesi, Chiedozie N.Ogbe, F.O.Akoroda, M.O.Ilona, P.Dixon, A.[Resistance profile of improved cassava germplasm to cassava mosaic disease in Nigeria]Resistance profile of improved cassava germplasm to cassava mosaic disease in Nigeria

A total of 436 African landraces and 497 improved cassava genotypes were planted in 1996, 1997, 1998 and 1999 growing seasons.. These were evaluated for their reactions to cassava anthracnose disease (CAD) under natural infection conditions at Ibadan (a high infection zone). The severity of the d...


Owolade, O.Dixon, A.Adeoti, A.Osunlaja, S.[Sources of resistance to cassava anthracnose disease]Sources of resistance to cassava anthracnose disease

The greenbug [Schizaphis graminum (Rondani)] has been recognized as a major insect pest of sorghum [Sorghum bicolor (L.) Moench] in the Great Plains of the USA since 1968. Biotype E has been prominent since 1980 and twelve sources of resistance within the Sorghum genus have been identified. The o...


Dixon, A.Bramel-Cox, P.J.Harvey, T.[Diallel analysis of resistance in sorghum to greenbug biotype E: antibiosis and tolerance]Diallel analysis of resistance in sorghum to greenbug biotype E: antibiosis and tolerance

The problem of genotype-by-environment (G x E) interactions that often complicates the interpretation of multilocational trial analysis making the prediction of genotype performance difficult can be eased with the adoption of the Additive Main Effects and Multiplicative Interaction (AMMI) model a...


Aina, O.O.Dixon, A.Akinrinde, E.[Additive main effects and multiplicative interaction (AMMI) analysis for yield of cassava in Nigeria]Additive main effects and multiplicative interaction (AMMI) analysis for yield of cassava in Nigeria

Genetic variability in shoot and root characteristics among 20 broad-based cassava genotypes was studied in four agroecological zones in Nigeria to determine its effects on root yield. Seventeen agronomic parameters were evaluated on a plot size of 40 m2, at spacing of 1x1 m in a Randomized Compl...


Aina, O.O.Dixon, A.Akinrinde, E.[Genetic variability in cassava as it influences storage root yield in Nigeria]Genetic variability in cassava as it influences storage root yield in Nigeria

The International Institute of Tropical of Agriculture (IITA) established its East and Southern Africa Regional Research Centre (ESARC) in Uganda at the former Namulonge Agricultural and Animal Research Institute (NAARI), presently Namulonge Animal and Crops Research Institute (NaCRRI), to addres...


Ntawuruhunga, PheneasDixon, A.Kanju, E.Ssemakula, G.N.Okechukwu, R.U.Whyte, J.Obiero, H.Bigirimana, S.Gashaka, G.Lukombo, S.Mkamilo, G.S.Ndyetabula, I.Tata-Hangy, W.Otim Okello, F.Schofield, J.[Successful innovations and lessons learnt in cassava improvement and deployment by IITA in Eastern African Region]Successful innovations and lessons learnt in cassava improvement and deployment by IITA in Eastern African Region

The Southern Africa Root Crops Research Netwrok (SARRNET), in collaboration with national research programmes in Southern Africa Development Community (SADC ) have made considerable impact in the SADC region in terms of promoting cassava (Manihot esculenta) and sweetpotato (Ipomea batatus) produc...

Le réseau de recherche du sud de l'Afrique en racines des plantes (SARRNET), en collaboration avec les programmes de recherche national des communautés de développement du sud de l'Afrique (SADC) ont rapporté des impacts considérables dans la région du SADC en termes de promotion de production de...


Mahungu, N.M.Sandifolo, V.S.Dixon, A.Whyte, J.A.Mhone, A.Terri, J.M.Álvarez, M.N.Andrade, M.I.Kolign, S.Jumbo, S.Moyo, C.C.[Contribution of SARRNET to food security in the SADC region]Contribution of SARRNET to food security in the SADC region

Cassava (Manihot esculenta (L.) Crantz) is a starchy root crop cultivated in the tropics for fresh consumption and commercial processing. Dry matter content and micronutrient density, particularly of provitamin A, traits that are negatively correlated, are among the primary selection objectives i...


Rabbi, Ismail Y.Udoh, L.I.Wolfe, M.Parkes, E.Y.Gedil, Melaku ADixon, A.Ramu, P.Jannink, Jean-LucKulakow, P.A.[Genome-Wide Association Mapping of Correlated Traits in Cassava: Dry Matter and Total Carotenoid Content]Genome-Wide Association Mapping of Correlated Traits in Cassava: Dry Matter and Total Carotenoid Content

Thirty-five cassava (Manihot esculenta Crantz) genotypes from the International Institute of Tropical Agriculture (IITA), germplasm collection were planted in May 1992 under natural disease infection conditions, at the IITA field plots at Ibadan, Nigeria. The genotypes were evaluated at monthly i...


Fokunang, C.N.Akem, C.Dixon, A.Ikotun, T.[Evaluation of a cassava germplasm collection for reaction to three major diseases and the effect on yield]Evaluation of a cassava germplasm collection for reaction to three major diseases and the effect on yield

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