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Highlights are presented on the status of knowledge about cassava mosaic disease (CMD) and its causal agents in Nigeria. The disease occurs in all the agroecologies where cassava is grown, from the humid forest in the south to the semiarid and arid agroecologies in the north. The severity is gene...


Ogbe, F.Atiri, G.Thottappilly, G.Dixon, A.[Cassava mosaic disease and its causal agents: the Nigeria situation]Cassava mosaic disease and its causal agents: the Nigeria situation
Rossel, H.W.Changa, C.M.Atiri, G.[Quantification of resistance to African cassava mosaic virus (ACMV) in IITA improved mosaic resistance cassava breeding materials]Quantification of resistance to African cassava mosaic virus (ACMV) in IITA improved mosaic resistance cassava breeding materials

The base section of the ACMV-susceptible clone 60506 recorded the highest disease incidence and severity relative to all other sections of the moderately resistant clone TMS 4(2)1425 and the resistant clone TMS 30001. However, in all clones, the base section recorded higher disease than either th...


Njock, T.E.Atiri, G.Thottappilly, G.Hahn, S.K.[Distribution and disease recovery of African cassava mosaic virus (ACMV) in stems of resistance and susceptible cassava]Distribution and disease recovery of African cassava mosaic virus (ACMV) in stems of resistance and susceptible cassava

The concentration of African cassava mosaic virus (ACMV) was assessed by enzyme-linked immunosorbent assay in relation to symptom severity among resistant, moderately resistant and susceptible cassava genotypes. Resistant genotype NR 8083 had significantly lower symptom severity scores (P < 0·05)...


Ogbe, F.Atiri, G.Dixon, Alfred G.O.Thottappilly, G.[Symtom severity of cassava mosaic disease in relation to concentration of African cassava mosaic virus in different cassava genotypes]Symtom severity of cassava mosaic disease in relation to concentration of African cassava mosaic virus in different cassava genotypes

Large-scale screening of cassava, Manihot esculenta Crantz, genotypes for resistance to infestation by whitefly Bemisia tabaci Gennadius, the vector of cassava mosaic geminiviruses, is limited. A range of new cassava elite clones were therefore assessed for the whitefly infestation in the 1999/20...


Ariyo, O.Dixon, A.Atiri, G.[Whitefly Bemisia tabaci (Homoptera: Aleyrodidae) infestation on cassava genotypes grown at different ecozones in Nigeria]Whitefly Bemisia tabaci (Homoptera: Aleyrodidae) infestation on cassava genotypes grown at different ecozones in Nigeria

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