Eleven improved varieties project were multiplied in 2009 by primary producers associated with the USAID/ IITA project Unleashing the Power of Cassava in Africa in response to the Food Price Crisis (UPoCA) in seven States of Nigeria. In 2010, stems from these multiplication farms were distributed...
Okechukwu, R.U.
,
Kehinde, I.A.
,
Afolabi, C.
,
James, B.
,
Egesi, Chiedozie N.
,
[Distribution of improved varieties of cassava and potential impact on root yield and disease reduction in Nigeria]
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Distribution of improved varieties of cassava and potential impact on root yield and disease reduction in Nigeria
Cassava contains little zinc, iron, and β-carotene, yet it is the primary staple crop of over 250 million Africans. This study used a 24-hour dietary recall to test the hypothesis that among healthy children aged 2–5 years in Nigeria and Kenya, cassava’s contribution to the childrens’ daily diets...
Gegios, A.
,
Amthor, R.
,
Maziya-Dixon, B.B.
,
Egesi, Chiedozie N.
,
Mallowa, S.
,
Nungo, R.
,
Gichuki, S.
,
Mbanaso, A.
,
Manary, M.J.
,
[Children consuming cassava as a staple food are at risk for inadequate zinc, iron, and vitamin A intake]
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Children consuming cassava as a staple food are at risk for inadequate zinc, iron, and vitamin A intake
The identification of superior genotypes and mega-environments on the basis of multiple traits is a key objective of multi-environment trials in cassava (Manihot esculenta Crantz). The objective of this study was to examine the genetic variation and genotype 3 environment interaction (GEI) effect...
Egesi, Chiedozie N.
,
Ilona, P.
,
Ogbe, F.O.
,
Akoroda, M.O.
,
Dixon, A.
,
[Genetic variation and genotype X environment interaction for yield and other agronomic traits in cassava in Nigeria]
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Genetic variation and genotype X environment interaction for yield and other agronomic traits in cassava in Nigeria
Ten new cassava genotypes selected for high yield and tolerance to some biotic stresses were evaluated alongside the local best, Otupam and ‘TMS 30572\' (a widely cultivated hybrid genotype, as an improved check) for two cropping seasons with a view to obtaining suitable genotype(s) that could be...
Baiyeri, K.P.
,
Edibo, G.O.
,
Obi, I.U.
,
Ogbe, F.O.
,
Egesi, Chiedozie N.
,
Eke-Okoro, O.N.
,
Okogbenin, Emmanuel
,
Dixon, Alfred G.O.
,
[Growth, yield and disease responses of 12 cassava genotypes evaluated for two cropping seasons in a derived savannah zone of southeastern Nigeria]
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Growth, yield and disease responses of 12 cassava genotypes evaluated for two cropping seasons in a derived savannah zone of southeastern Nigeria
Random forests (RF) was used to correlate spectral responses to known wet chemistry carotenoid concentrations including total carotenoid content (TCC), all-trans β-carotene (ATBC), violaxanthin (VIO), lutein (LUT), 15-cis beta-carotene (15CBC), 13-cis beta-carotene (13CBC), alpha-carotene (AC), 9...
Ikeogu, U.N.
,
Akdemir, D.
,
Wolfe, M.D.
,
Okeke, U.G.
,
Amaefula, C.
,
Jannink, Jean-Luc
,
Egesi, Chiedozie N.
,
[Genetic correlation, genome-wide association and genomic prediction of portable NIRS predicted carotenoids in cassava roots]
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Genetic correlation, genome-wide association and genomic prediction of portable NIRS predicted carotenoids in cassava roots
Introgression of alleles from wild relatives has often been adaptive in plant breeding. However, the significance of historical hybridization events in modern breeding is often not clear. Cassava (Manihot esculenta) is among the most important staple foods in the world, sustaining hundreds of mil...
Wolfe, M.D.
,
Bauchet, G.J.
,
Chan, A.W.
,
Lozano, R.
,
Ramu, P.
,
Egesi, Chiedozie N.
,
Kawuki, R.
,
Kulakow, P.
,
Rabbi, Ismail Y.
,
Jannink, Jean-Luc
,
[Historical introgressions from a wild relative of modern cassava improved important traits and may be under balancing selection]
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Historical introgressions from a wild relative of modern cassava improved important traits and may be under balancing selection
Nigeria is the world’s largest cassava producer, hosting a diverse array of cassava farmers and processors. Cassava breeding programs prioritize “common denominator” traits in setting breeding agendas, to impact the largest possible number of people through improved varieties. This approach has b...
Teeken, B.
,
Olaosebikan, O.
,
Haleegoah, J.
,
Oladejo, E.
,
Madu, T.
,
Bello, A.
,
Parkes, E.
,
Egesi, Chiedozie N.
,
Kulakow, P.
,
Kirscht, H.
,
Tufan, Hale Ann
,
[Cassava trait preferences of men and women farmers in Nigeria: implications for breeding]
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Cassava trait preferences of men and women farmers in Nigeria: implications for breeding
Cassava (Manihot esculenta Crantz) is an important staple food crop in Africa and South America; however, ubiquitous deleterious mutations may severely decrease its fitness. To evaluate these deleterious mutations, we constructed a cassava haplotype map through deep sequencing 241 diverse accessi...
Ramu, P.
,
Esuma, W.
,
Kawuki, R.
,
Rabbi, Ismail Y.
,
Egesi, Chiedozie N.
,
Bredeson, J.V.
,
Bart, R.S.
,
Verma, J.
,
Buckler, E.S.
,
Lu, F
,
[Cassava haplotype map highlights fixation of deleterious mutations during clonal propagation]
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Cassava haplotype map highlights fixation of deleterious mutations during clonal propagation
Teeken, B.
,
Olaosebikan, O.
,
Haleegoah, J.
,
Oladejo, E.
,
Madu, T.
,
Bello, A.
,
Parkes, E.
,
Egesi, Chiedozie N.
,
Okoro, M.
,
Onwuka, S.
,
Aina, O.O.
,
Kulakow, P.A.
,
Kirscht, H.
,
Tufan, Hale Ann
,
[Towards a gender responsive cassava breeding program in Nigeria]
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Towards a gender responsive cassava breeding program in Nigeria
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 ...
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)]
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Rapid analyses of dry matter content and carotenoids in fresh cassava roots using a portable visible and near infrared spectrometer (Vis/NIRS)