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Cassava mosaic disease (CMD) is the most important constraint to cassava (Manihot esculenta) production in Africa. Since the 1990s, the importance of the disease has been greatly increased by the spread through East and Central Africa of a pandemic of unusually severe CMD (Legg, 1999), associated...


Bigirimana, S.Barumbanze, P.Obonyo, R.Legg, J.P.[First evidence for the spread of East African cassava mosaic virus Uganda (EACMVUG) and the pandemic of severe cassava mosaic disease to Burundi]First evidence for the spread of East African cassava mosaic virus Uganda (EACMVUG) and the pandemic of severe cassava mosaic disease to Burundi

The cassava mosaic geminiviruses (CMGs) isolated from cassava plants expressing mild and severe symptoms of cassava mosaic disease (CMD) in 2002 in Uganda were investigated using the polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP) molecular techniques and DNA seq...


Sseruwagi, P.Rey, M.E.C.Brown, J.K.Legg, J.P.[The cassava mosaic geminiviruses occurring in Uganda following the 1990s epidemic of severe cassava mosaic disease]The cassava mosaic geminiviruses occurring in Uganda following the 1990s epidemic of severe cassava mosaic disease

Tumwegamire, SilverKanju, E.Legg, J.P.Shirima, R.Kombo, S.Mkamilo, G.S.Mtunda, K.Sichalwe, K.Kulembeka, H.P.Ndyetabura, I.Saleh, H.Kawuki, R.Alicai, TitusAdiga, G.Benesi, I.Mhone, A.Zacarias, A.Matsimbe, S.F.Munga, T.Ateka, E.Navangi, L.Maruthi, M.N.Mwatuni, F.Ngundo, G.Mwangangi, M.Mbugua, E.Ndunguru, J.Rajabu, C.Mark, D.[Exchanging and managing in-vitro elite germplasm to combat cassava brown streak disease (CBSD) and cassava mosaic disease (CMD) in Eastern and Southern Africa]Exchanging and managing in-vitro elite germplasm to combat cassava brown streak disease (CBSD) and cassava mosaic disease (CMD) in Eastern and Southern Africa

Cassava mosaic disease (CMD) is the major production constraint oncassava (Manihot esculenta) in Angola. Previous reports derived fromsingle samples recorded the presence of African cassava mosaic virus(ACMV) and East African cassava mosaic virus (EACMV) in Angola.Regional CMD ...


Kumar, P.L.Akinbade, S.A.Dixon, Alfred G.O.Mahungu, N.M.Mutunda, M.P.Kiala, D.Legg, J.P.[First report of the occurrence of East African cassava mosaic virusUganda (EACMVUG) in Angola]First report of the occurrence of East African cassava mosaic virusUganda (EACMVUG) in Angola

After 2007, upsurges of whiteflies on cassava plants and high incidences of cassava diseases were observed in Central African Republic. This recent upsurge in the abundance of Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) was directly linked to serious damage to cassava crops resulting from...


Tocko-Marabena, B.K.Silla, S.Simiand, C.Zinga, I.Legg, J.P.Reynaud, B.Delatte, H.[Genetic diversity of Bemisia tabaci species colonizing cassava in Central African Republic characterized by analysis of cytochrome c oxidase subunit I]Genetic diversity of Bemisia tabaci species colonizing cassava in Central African Republic characterized by analysis of cytochrome c oxidase subunit I

Cassava mosaic begomoviruses (CMBs) cause cassava mosaic disease (CMD) across Africa and the Indian subcontinent. Like all members of the geminivirus family, CMBs have small, circular single-stranded DNA genomes. We report here the discovery of two novel DNA sequences, designated SEGS-1 and SEGS-...

Cassava mosaic begomoviruses (CMBs) cause cassava mosaic disease (CMD) across Africa and the Indian subcontinent. Like all members of the geminivirus family, CMBs have small, circular single-stranded DNA genomes. We report here the discovery of two novel DNA sequences, designated SEGS-1 and SEGS-...


Ndunguru, JosephLeón, Leandro deDoyle, Catherine D.Sseruwagi, PeterPlata, GermanLegg, J.P.Thompson, GrahamTohme, Joseph M.Aveling, TheresaAscencio Ibáñez, Jose T.Hanley Bowdoin, Linda[Two Novel DNAs that enhance symptoms and overcome CMD2 resistance to cassava mosaic disease]Two Novel DNAs that enhance symptoms and overcome CMD2 resistance to cassava mosaic disease

To improve understanding of the dynamics of the cassava mosaic disease (CMD) pandemic front, geospatial approaches were applied to the analysis of 3 years’ data obtained from a 2-by-2° (approximately 222-by-222 km) area of northwestern Tanzania. In total, 80 farmers’ fields were assessed in each ...


Szyniszewska, A.M.Busungu, C.Boni, S.B.Shirima, R.Bouwmeester, H.J.Legg, J.P.[Spatial analysis of temporal changes in the pandemic of severe cassava mosaic disease in Northwestern Tanzania]Spatial analysis of temporal changes in the pandemic of severe cassava mosaic disease in Northwestern Tanzania

Although cassava shows resilience against a myriad of pests and diseases, including several of viral aetiology, two virus disease complexes, cassava brown streak disease and cassava mosaic disease (CMD), are the major yield-limiting biotic constraints to its production in sub-Sahara Africa. Subse...


Alabi, O.J.Mulenga, R.Legg, J.P.[Cassava mosaic]Cassava mosaic
International Institute of Tropical AgricultureSseruwagi, P.Legg, J.P.[Emergency programme to combat the Cassava Mosaic Disease pandemic in East and Central Africa; a systemwide whitefly IPM affliated project: Confeerence Procedings of the sixth regional stakeholders meeting, Mwanza, Tanzania, September 22-24, 2004]Emergency programme to combat the Cassava Mosaic Disease pandemic in East and Central Africa; a systemwide whitefly IPM affliated project: Confeerence Procedings of the sixth regional stakeholders meeting, Mwanza, Tanzania, September 22-24, 2004

Msikita, W.James, B.Nnodu, E.Legg, J.P.Wydra, K.Ogbe, F.[Disease control in cassava farms: IPM field guide for extension agents]Disease control in cassava farms: IPM field guide for extension agents

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