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Journal Article 2000

Autor: Fregene, Martin A. Bernal, A. Duque E., Myriam Cristina Dixon, Alfred G.O. Tohme, Joseph M.

Amplified fragment length polymophism was assessed in 20 land races and nine elite lines of cassava from Africa, resistant and susceptible to the cassava mosaic disease (CMD). Eleven accessions from a representative core collection from Latin America, previously studied by AFLPs, were included as...

Enlace original: https://cgspace.cgiar.org/handle/10568/42554

Investigación en Agricultura
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Fregene, Martin A. ,  Bernal, A. ,  Duque E., Myriam Cristina ,  Dixon, Alfred G.O. ,  Tohme, Joseph M. ,  [AFLP analysis of African cassava (Manihot esculenta Crantz) germplasm resistant to the cassava mosaic disease (CMD)] ,  AFLP analysis of African cassava (Manihot esculenta Crantz) germplasm resistant to the cassava mosaic disease (CMD)
Conference Proceedings 2012-02

Autor: Fomba, S.N. Massaquoi, F.B. Norman, P.E. Samura, A.E. Mansaray, A. Jalloh, A. Dixon, Alfred G.O. Anthony, N.A. Benya, M.T. Fornah, D.S. Sawi, M.K. Sartie, A.M. Onadipe, O. Sanni, L.O.

Cassava (Manihot esculenta Crantz) is the second most important food crop after rice, the staple in Sierra Leone; it is also the most important root and tuber crop. It is followed by sweet potato (Ipomoea batatas L.), yam (Dioscorea spp.), which forms part of the traditional farming system and ha...

Enlace original: https://cgspace.cgiar.org/handle/10568/81477

Investigación en Agricultura
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Fomba, S.N. ,  Massaquoi, F.B. ,  Norman, P.E. ,  Samura, A.E. ,  Mansaray, A. ,  Jalloh, A. ,  Dixon, Alfred G.O. ,  Anthony, N.A. ,  Benya, M.T. ,  Fornah, D.S. ,  Sawi, M.K. ,  Sartie, A.M. ,  Onadipe, O. ,  Sanni, L.O. ,  [Current status of root and tuber crops improvement, production and utilization in Sierra Leone] ,  Current status of root and tuber crops improvement, production and utilization in Sierra Leone
Journal Article 2003-03

Autor: Ogbe, F.O. Thottappilly, G. Dixon, Alfred G.O. Atiri, G.I. Mignouna, H.D.

In a survey for cassava mosaic begomoviruses conducted in 1997 and 1998 in Nigeria, East African cassava mosaic virus (EACMV) was detected by the polymerase chain reaction together with African cassava mosaic virus (ACMV) in 27 out of 290 cassava leaf samples of infected plants from 254 farmers' ...

Enlace original: https://cgspace.cgiar.org/handle/10568/96370

Investigación en Agricultura
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Ogbe, F.O. ,  Thottappilly, G. ,  Dixon, Alfred G.O. ,  Atiri, G.I. ,  Mignouna, H.D. ,  [Variants of East African cassava mosaic virus and its distribution in double infections with African cassava mosaic virus in Nigeria] ,  Variants of East African cassava mosaic virus and its distribution in double infections with African cassava mosaic virus in Nigeria
Journal Article 1990

Autor: Dixon, Alfred G.O. Bramel-Cox, P.J. Reese, J.C.

The feeding behavior of biotype E greenbug, Schizaphis graminum (Rondani), on seedlings of sorghum, Sorghum bicolor (L.) Moench, genotypes with various levels and mechanisms of seedling resistance was examined in a 12-h period with a computerized electronic insect feeding monitor. Results indicat...

Enlace original: https://cgspace.cgiar.org/handle/10568/101889

Investigación en Agricultura
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Dixon, Alfred G.O. ,  Bramel-Cox, P.J. ,  Reese, J.C. ,  [Feeding behaviour of biotype E greenbug (Homoptera: Aphididae) and its relationship to resistance in sorghum] ,  Feeding behaviour of biotype E greenbug (Homoptera: Aphididae) and its relationship to resistance in sorghum
Journal Article 1999

Autor: Nukenine, E.N. Dixon, Alfred G.O. Hassan, A.T. Asiwe, J.A.N.

Three field trials were conducted at IITA, Ibadan, Nigeria between 1993 and 1995 to identify a rapid method of screening cassava (Manihot esculenta Crantz) cultivars for canopy retention and to determine the association between canopy retention and resistance to green spider mite (Mononychellus t...

Enlace original: https://cgspace.cgiar.org/handle/10568/96062

Investigación en Agricultura
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Nukenine, E.N. ,  Dixon, Alfred G.O. ,  Hassan, A.T. ,  Asiwe, J.A.N. ,  [Evaluation of cassava cultivars for canopy retention and its relationship with field resistance to green spider mite] ,  Evaluation of cassava cultivars for canopy retention and its relationship with field resistance to green spider mite
Journal Article 1999

Autor: Fokunang, C.N. Akem, C.N. Ikotun, T. Dixon, Alfred G.O.

Twelve cassava (Manihot esculenta Crantz) genotypes were planted under natural field conditions for two different cropping seasons (wet and dry), in 1992 and 1993 at the research farm of the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria. The trial studied the effect of p...

Enlace original: https://cgspace.cgiar.org/handle/10568/96063

Investigación en Agricultura
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Fokunang, C.N. ,  Akem, C.N. ,  Ikotun, T. ,  Dixon, Alfred G.O. ,  [Effect of planting season on cassava anthracnose disease development] ,  Effect of planting season on cassava anthracnose disease development
Journal Article 2007-03

Autor: Akinbo, Olalekan Gedil, M. Ekpo, E.J.A. Oladele, J. Dixon, Alfred G.O.

Cassava anthracnose disease (CAD) is a major stem disease of cassava (Manihot esculenta Crantz) in the cassava growing areas of the world. To identify markers associated with resistance to CAD, F1 progenies were produced from a cross between resistant genotype TME 117, and susceptible genotype TM...

Enlace original: https://cgspace.cgiar.org/handle/10568/92161

Investigación en Agricultura
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Akinbo, Olalekan ,  Gedil, M. ,  Ekpo, E.J.A. ,  Oladele, J. ,  Dixon, Alfred G.O. ,  [Detection of RAPD markers linked to resistance to cassava anthracnose disease] ,  Detection of RAPD markers linked to resistance to cassava anthracnose disease
Conference Proceedings 2012

Autor: Yomeni, M.O. Akoroda, M.O. Dixon, Alfred G.O.

Four attributes of stem quality: number of nodes1, diameter2, and stem weight3 per 25-cm plantable stake (PS), and the stake position4 were investigated in field trials at Blocks 4, 18 and 24 of the International Institute of Tropical Agriculture (IITA) Onne, Ajibode, Ibadan, Federal College of A...

Enlace original: https://cgspace.cgiar.org/handle/10568/80516

Investigación en Agricultura
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Yomeni, M.O. ,  Akoroda, M.O. ,  Dixon, Alfred G.O. ,  [Cassava (Manihot esculenta Crantz) stems quality for root production effectiveness] ,  Cassava (Manihot esculenta Crantz) stems quality for root production effectiveness
Journal Article 2009-08

Autor: Lava Kumar, P. Akinbade, S.A. Dixon, Alfred G.O. Mahungu, N.M. Mutunda, M.P. Kiala, D. Londa, L. Legg, J.P.

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

Enlace original: https://cgspace.cgiar.org/handle/10568/90813

Investigación en Agricultura
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Lava Kumar, P. ,  Akinbade, S.A. ,  Dixon, Alfred G.O. ,  Mahungu, N.M. ,  Mutunda, M.P. ,  Kiala, D. ,  Londa, L. ,  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
Journal Article 2003-02

Autor: Ogbe, F. Atiri, G. Dixon, Alfred G.O. Thottappilly, G.

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)...

Enlace original: https://cgspace.cgiar.org/handle/10568/96322

Investigación en Agricultura
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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

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