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Journal Article 2007

Autor: Egesi, Chiedozie N. Ogbe, F.O. Akoroda, M.O. Ilona, P. Dixon, A.

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...

Enlace original: https://cgspace.cgiar.org/handle/10568/92162

Investigación en Agricultura
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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
Poster 2008

Autor: Okogbenin, Emmanuel Egesi, Chiedozie N. Mbanaso, ENA Ogbe, FO Santos Meléndez, Luis Guillermo Gutiérrez A., Janeth Patricia Marín, J.A. Mba, C Ukpabi, U.J. Fregene, Martin A.
Enlace original: https://cgspace.cgiar.org/handle/10568/58099

Investigación en Agricultura
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Okogbenin, Emmanuel ,  Egesi, Chiedozie N. ,  Mbanaso, ENA ,  Ogbe, FO ,  Santos Meléndez, Luis Guillermo ,  Gutiérrez A., Janeth Patricia ,  Marín, J.A. ,  Mba, C ,  Ukpabi, U.J. ,  Fregene, Martin A. ,  [Development of cassava germplasm resources for the improvement of high value root quality traits through induced mutation and marker aided breeding in Nigeria] ,  Development of cassava germplasm resources for the improvement of high value root quality traits through induced mutation and marker aided breeding in Nigeria
Journal Article 2011

Autor: Njoku, DN Vernon, G Egesi, Chiedozie N. Asante, I.K. Offei, SK Okogbenin, Emmanuel Kulakow, P.A. Eke-Okoro, O.N. Ceballos, H.

This review presents an overview of the importance, constraints, and prospects on different aspects of cassava (Manihot esculenta crantz) breeding for enhanced micronutrient level, including carotenoids (precursors for provitamin-A) and especially beta-carotene. Early cassava-breeding efforts con...

Enlace original: https://cgspace.cgiar.org/handle/10568/43238

Investigación en Agricultura
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Njoku, DN ,  Vernon, G ,  Egesi, Chiedozie N. ,  Asante, I.K. ,  Offei, SK ,  Okogbenin, Emmanuel ,  Kulakow, P.A. ,  Eke-Okoro, O.N. ,  Ceballos, H. ,  [Breeding for enhanced ß-Carotene content in cassava: constraints and accomplishments] ,  Breeding for enhanced ß-Carotene content in cassava: constraints and accomplishments
Journal Article 2017-12-11

Autor: Ikeogu, Ugochukwu N. Davrieux, Fabrice Dufour, D.L. Ceballos, H. Egesi, Chiedozie N. Jannink, Jean-Luc

Portable Vis/NIRS are flexible tools for fast and unbiased analyses of constituents with minimal sample preparation. This study developed calibration models for dry matter content (DMC) and carotenoids in fresh cassava roots using a portable Vis/NIRS system. We examined the effects of eight data ...

Enlace original: https://cgspace.cgiar.org/handle/10568/89923

Investigación en Agricultura
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Ikeogu, Ugochukwu N. ,  Davrieux, Fabrice ,  Dufour, D.L. ,  Ceballos, H. ,  Egesi, Chiedozie N. ,  Jannink, Jean-Luc ,  [Rapid analyses of dry matter content and carotenoids in fresh cassava roots using a portable visible and near infrared spectrometer (Vis/NIRS)] ,  Rapid analyses of dry matter content and carotenoids in fresh cassava roots using a portable visible and near infrared spectrometer (Vis/NIRS)
Journal Article 2007

Autor: Okogbenin, Emmanuel Porto, M.C.M. Egesi, Chiedozie N. Mba, C Espinosa, E. Santos Melendez, LG Ospina, C. Marin, JA Barrera Sabogal, E Gutiérrez A., Janeth Patricia Ekanayake, I.J. Iglesias, C.A. Fregene, Martin A.

The gene pools for breeding cassava (Manihot esculenta Crantz) in Africa currently contain only a fraction of the existing genetic variation found in Latin America where the crop originates. Our research aimed to broaden the genetic base in Africa by introducing Latin American (LA) germplasm. The...

Enlace original: https://cgspace.cgiar.org/handle/10568/43842

Investigación en Agricultura
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Okogbenin, Emmanuel ,  Porto, M.C.M. ,  Egesi, Chiedozie N. ,  Mba, C ,  Espinosa, E. ,  Santos Melendez, LG ,  Ospina, C. ,  Marin, JA ,  Barrera Sabogal, E ,  Gutiérrez A., Janeth Patricia ,  Ekanayake, I.J. ,  Iglesias, C.A. ,  Fregene, Martin A. ,  [Marker-assisted introgression of resistance to cassava mosaic disease into Latin American germplasm for the genetic improvement of cassava in Africa] ,  Marker-assisted introgression of resistance to cassava mosaic disease into Latin American germplasm for the genetic improvement of cassava in Africa
Poster 2007

Autor: Okogbenin, Emmanuel Egesi, Chiedozie N. Mba, C Espinosa, E. Santos Meléndez, Luis Guillermo Ospina, C. Marín, J.A. Barrera Sabogal, E Gutiérrez A., Janeth Patricia Fregene, Martin A.
Enlace original: https://cgspace.cgiar.org/handle/10568/57834

Investigación en Agricultura
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Okogbenin, Emmanuel ,  Egesi, Chiedozie N. ,  Mba, C ,  Espinosa, E. ,  Santos Meléndez, Luis Guillermo ,  Ospina, C. ,  Marín, J.A. ,  Barrera Sabogal, E ,  Gutiérrez A., Janeth Patricia ,  Fregene, Martin A. ,  [Bridging the cassava productivity gap between Africa and the world: identification of elite CIAT lines adapted to Nigerian agro-ecologies] ,  Bridging the cassava productivity gap between Africa and the world: identification of elite CIAT lines adapted to Nigerian agro-ecologies
Book Chapter 2013

Autor: Okogbenin, Emmanuel Egesi, Chiedozie N. Fregene, Martin A.
Enlace original: https://cgspace.cgiar.org/handle/10568/55639

Investigación en Agricultura
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Okogbenin, Emmanuel ,  Egesi, Chiedozie N. ,  Fregene, Martin A. ,  [Molecular markers and tissue culture: technologies transcending continental barries to add value and improve productivity of cassava in Africa] ,  Molecular markers and tissue culture: technologies transcending continental barries to add value and improve productivity of cassava in Africa
Poster 2004

Autor: Egesi, Chiedozie N. Mba, C Tafur, S Castelblanco, WH Morante, N Ceballos, H. Fregene, Martin A.
Enlace original: https://cgspace.cgiar.org/handle/10568/57974

Investigación en Agricultura
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Egesi, Chiedozie N. ,  Mba, C ,  Tafur, S ,  Castelblanco, WH ,  Morante, N ,  Ceballos, H. ,  Fregene, Martin A. ,  [Identification of naturally occurring and irradiation-induced mutant GBSSI alleles of cassava in a heterozygous genetic background] ,  Identification of naturally occurring and irradiation-induced mutant GBSSI alleles of cassava in a heterozygous genetic background
Journal Article 2014-01-15

Autor: Olasanmi, B Akoroda, M.O. Okogbenin, Emmanuel Egesi, Chiedozie N. Kahya, SS Onyegbule, O Ewa, F. Gutiérrez, J. Ceballos, H. Tohme, Joseph M. Fregene, Martin A.

Late root bulking is a major factor leading to rejection and abandoning of improved cassava genotypes in sub-Saharan Africa. Early bulking (EB) varieties shorten the growth period from planting to harvesting, better fit into environments with short rainy season, and reduce exposure to biotic and ...

Enlace original: https://cgspace.cgiar.org/handle/10568/42140

Investigación en Agricultura
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Olasanmi, B ,  Akoroda, M.O. ,  Okogbenin, Emmanuel ,  Egesi, Chiedozie N. ,  Kahya, SS ,  Onyegbule, O ,  Ewa, F. ,  Gutiérrez, J. ,  Ceballos, H. ,  Tohme, Joseph M. ,  Fregene, Martin A. ,  [Bulked segregant analysis identifies molecular markers associated with early bulking in cassava (Manihot esculenta Crantz)] ,  Bulked segregant analysis identifies molecular markers associated with early bulking in cassava (Manihot esculenta Crantz)
Journal Article 2017

Autor: Wolfe, M.D. Carpio, D.P. del Alabi, O. Ezenwaka, L.C. Ikeogu, Ugochukwu N. Kayondo, I.S. Lozano, R. Okeke, U.G. Ozimati, A.A. Williams, E. Egesi, Chiedozie N. Kawuki, Robert S. Kulakow, P.A. Rabbi, Ismail Y. Jannink, Jean-Luc

Cassava (Manihot esculenta Crantz) is a clonally propagated staple food crop in the tropics. Genomic selection (GS) has been implemented at three breeding institutions in Africa to reduce cycle times. Initial studies provided promising estimates of predictive abilities. Here, we expand on previou...

Enlace original: https://cgspace.cgiar.org/handle/10568/89706

Investigación en Agricultura
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Wolfe, M.D. ,  Carpio, D.P. del ,  Alabi, O. ,  Ezenwaka, L.C. ,  Ikeogu, Ugochukwu N. ,  Kayondo, I.S. ,  Lozano, R. ,  Okeke, U.G. ,  Ozimati, A.A. ,  Williams, E. ,  Egesi, Chiedozie N. ,  Kawuki, Robert S. ,  Kulakow, P.A. ,  Rabbi, Ismail Y. ,  Jannink, Jean-Luc ,  [Prospects for Genomic Selection in Cassava Breeding] ,  Prospects for Genomic Selection in Cassava Breeding

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