Descubre y comparte nuestro conocimiento público

Se han encontrado 37 recursos

Resultados de búsqueda

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
Enlace permanente
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 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
Enlace permanente
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
Enlace permanente
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 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
Enlace permanente
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
Journal Article 2008

Autor: Ssemakula, G.N. Dixon, Alfred G.O. Maziya-Dixon, B.B.

Iron (Fe) and Zinc (Zn) concentrations in tuberous roots of twenty-five cassava (Manihot esculenta Crantz) genotypes were determined over 2 years (2004/2005 and 2005/2006) at five locations representing distinct agroecologies in Nigeria. The objectives were to study the magnitude and nature of ge...

Enlace original: https://cgspace.cgiar.org/handle/10568/90912

Investigación en Agricultura
Enlace permanente
Ssemakula, G.N. ,  Dixon, Alfred G.O. ,  Maziya-Dixon, B.B. ,  [Stability of iron and zinc concentrations in selected genotypes of cassava (Manihot esculenta Crantz) tuberous roots] ,  Stability of iron and zinc concentrations in selected genotypes of cassava (Manihot esculenta Crantz) tuberous roots
Journal Article 2007-12-03

Autor: Moyib, O.K. Odunola, O.A. Dixon, Alfred G.O.

Thirty-one improved cultivars and five Nigerian landraces of cassava were assessed at genomic DNA level with 16 SSR primers for genetic diversity study. The minimum number of SSR primers that could readily be used for identification of the 36 cassava genotypes was also determined. For the genetic...

Enlace original: https://cgspace.cgiar.org/handle/10568/92813

Investigación en Agricultura
DNA
Enlace permanente

Moyib, O.K. ,  Odunola, O.A. ,  Dixon, Alfred G.O. ,  [SSR markers reveal genetic variation between improved cassava cultivars and landraces within a collection of Nigerian cassava germplasm] ,  SSR markers reveal genetic variation between improved cassava cultivars and landraces within a collection of Nigerian cassava germplasm
Journal Article 2003

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

A study was conducted at the greenhouse of the international institute of Tropical Agriculture, Ibadan,Nigeria to investigate the synergistic relationship of xanthomonas campestris pv. Manihotics (causal agent of cassava bacteria blight CBB), and colletotrichum gloeosporiodes f.sp manihotics (cau...

Enlace original: https://cgspace.cgiar.org/handle/10568/98115

Investigación en Agricultura
Enlace permanente
Fokunang, C.N. ,  Dixon, Alfred G.O. ,  Ikotun, T. ,  [Synergistic relationship of bacterial blight and anthracnose disease pathogen in cassava multiple infection] ,  Synergistic relationship of bacterial blight and anthracnose disease pathogen in cassava multiple infection
Journal Article 2011

Autor: Bah, E.S. Bamkefa, B.A. Winter, S. Dixon, Alfred G.O.

Several begomovirus species and strains causing cassava mosaic disease (CMD) have been reported from cassava in Africa. A diagnostic survey was made in the four agroecological zones of Guinea to determine the status of CMD and cassava begomoviruses and to ascertain if the virulent Ugandan variant...

Enlace original: https://cgspace.cgiar.org/handle/10568/88177

Investigación en Agricultura
Enlace permanente
Bah, E.S. ,  Bamkefa, B.A. ,  Winter, S. ,  Dixon, Alfred G.O. ,  [Distribution and current status of cassava mosaic disease and begomoviruses in Guinea] ,  Distribution and current status of cassava mosaic disease and begomoviruses in Guinea
Journal Article 2011

Autor: Bamkefa, B.A. Bah, E.S. Dixon, Alfred G.O.

A survey was carried out of 86 cassava fields in the lowland savanna; humid forest, mid-altitude savanna, and lowland humid savanna agroecological zones of Guinea. Each field was assessed for the incidence and severity of cassava bacterial blight (CBB), cassava anthracnose disease (CAD), Cercospo...

Enlace original: https://cgspace.cgiar.org/handle/10568/88138

Investigación en Agricultura
Enlace permanente
Bamkefa, B.A. ,  Bah, E.S. ,  Dixon, Alfred G.O. ,  [Survey of the current distribution and status of bacterial blight and fungal diseases of cassava in Guinea] ,  Survey of the current distribution and status of bacterial blight and fungal diseases of cassava in Guinea
Journal Article 2005-07

Autor: Onyeka, T.J. Dixon, Alfred G.O. Ekpo, E.J.A.

eports of cassava root rot disease from different African countries have increased in recent times. Field studies were conducted from July 1998 to October 1999 to determine a reproducible disease assessment method that would allow the comparison of results from different locations and an evaluati...

Enlace original: https://cgspace.cgiar.org/handle/10568/103515

Investigación en Agricultura
Enlace permanente

Onyeka, T.J. ,  Dixon, Alfred G.O. ,  Ekpo, E.J.A. ,  [Field evaluation of root rot disease and relationship between disease severity and yield in cassava] ,  Field evaluation of root rot disease and relationship between disease severity and yield in cassava

Selecciona los documentos para visualizarlos

Nombre del archivo Ver recurso
Marcar todos
Limpiar todo