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Conference Proceedings 2012

Autor: Kamara, A.Y. Ewansiha, S.U. Ajeigbe, Hakeem A. Okechukwu, R.U. Tefera, H. Boukar, O. Omoigui, L.O.

A field study was conducted to determine the rate of genetic improvement in grain and fodder yields of cowpea genotypes developed in the Nigerian Sudan savannas from 1970 to 2004. Results showed that grain yield ranged from 568 kg/ha for an old variety TVX3236 to 1851 kg/ha for a recently release...

Enlace original: https://cgspace.cgiar.org/handle/10568/80471

Investigación en Agricultura
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Kamara, A.Y. ,  Ewansiha, S.U. ,  Ajeigbe, Hakeem A. ,  Okechukwu, R.U. ,  Tefera, H. ,  Boukar, O. ,  Omoigui, L.O. ,  [Improvements in grain and fodder yield of cowpea (Vigna unguiculata) varieties developed in the Sudan savannas of Nigeria over the past four decades] ,  Improvements in grain and fodder yield of cowpea (Vigna unguiculata) varieties developed in the Sudan savannas of Nigeria over the past four decades
Journal Article 2017-06-29

Autor: Desalegne, B.A. Dagne, K. Gedil, M. Boukar, O. Fatokun, C.A.

The extent of genetic diversity and relatedness of cowpea germplasm from East Africa are poorly understood. A set of 13 microsatellites (SSR) and 151 single nucleotide polymorphisms (SNPs) markers were applied to assess the levels of genetic diversity in a sample of 95 accessions of local cowpea ...

Enlace original: https://cgspace.cgiar.org/handle/10568/82997

Investigación en Agricultura
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Desalegne, B.A. ,  Dagne, K. ,  Gedil, M. ,  Boukar, O. ,  Fatokun, C.A. ,  [Efficiency of SNP and SSR-based analysis of genetic diversity, population structure, and relationships among cowpea (Vigna unguiculata (L.) Walp.) germplasm from east Africa and IITA inbred lines] ,  Efficiency of SNP and SSR-based analysis of genetic diversity, population structure, and relationships among cowpea (Vigna unguiculata (L.) Walp.) germplasm from east Africa and IITA inbred lines
Conference Paper 2009

Autor: Tefera, H. Bandyopadhyay, Ranajit Adeleke, R.A. Boukar, O. Ishaq, M.

Soybean rust, caused by Phakopsora pachyrhizi, has become a threat to soybean production in west, central, east and southern Africa. This foliar disease can cause 40-80% yield loss under African conditions. IITA started to develop resistant lines for this disease since 2003 and a number of homozy...

Enlace original: https://cgspace.cgiar.org/handle/10568/90828

Investigación en Agricultura
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Tefera, H. ,  Bandyopadhyay, Ranajit ,  Adeleke, R.A. ,  Boukar, O. ,  Ishaq, M. ,  [Grain yields of rust resistant promiscuous soybean lines in the Guinea savanna of Nigeria] ,  Grain yields of rust resistant promiscuous soybean lines in the Guinea savanna of Nigeria
Book Chapter 2012-12-31

Autor: Grings, Elaine E. Tarawali, Shirley A. Blümmel, Michael Musa, A. Fatokun, C.A. Hearne, S. Boukar, O.

Demand for livestock products has been increasing through much of the semi-arid tropics and will likely continue to increase along with the use of purchased feedstuffs. As smallholder livestock systems evolve and become more market oriented, the type of diets fed to livestock may change and the i...

Enlace original: https://cgspace.cgiar.org/handle/10568/33516

Investigación en Agricultura
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Grings, Elaine E. ,  Tarawali, Shirley A. ,  Blümmel, Michael ,  Musa, A. ,  Fatokun, C.A. ,  Hearne, S. ,  Boukar, O. ,  [Cowpea in evolving livestock systems] ,  Cowpea in evolving livestock systems
Book Chapter 2012

Autor: Fatokun, C.A. Boukar, O. Tamo, M.

Cowpea is seed propagated and when mature seeds are properly dried they could remain viable over a period of time depending on the genotype and storage conditions. Due to heat and dry conditions seeds of cultivated cowpea that remain in the fields after harvest usually do not retain viability for...

Enlace original: https://cgspace.cgiar.org/handle/10568/80035

Investigación en Agricultura
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Fatokun, C.A. ,  Boukar, O. ,  Tamo, M. ,  [Gene flow in cowpea: field viability of wild and cultivated cowpea seeds and the hybrids between them] ,  Gene flow in cowpea: field viability of wild and cultivated cowpea seeds and the hybrids between them
Journal Article 2019-05-02

Autor: Manda, J. Alene, A. Hirpa Tufa, A. Abdoulaye, Tahirou Kamara, A. Olufajo, O. Boukar, O. Manyong, Victor M.

Cowpea covers the largest area of any grain legume in Africa and is especially important in West Africa where Nigeria and Niger alone account for over 75% of the total cowpea production in the world. Despite successes of international and national cowpea improvement research in the development an...

Enlace original: https://cgspace.cgiar.org/handle/10568/101319

Investigación en Agricultura
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Manda, J. ,  Alene, A. ,  Hirpa Tufa, A. ,  Abdoulaye, Tahirou ,  Kamara, A. ,  Olufajo, O. ,  Boukar, O. ,  Manyong, Victor M. ,  [Adoption and ex-post impacts of improved cowpea varieties on productivity and net returns in Nigeria] ,  Adoption and ex-post impacts of improved cowpea varieties on productivity and net returns in Nigeria
Journal Article 2004

Autor: Boukar, O. Kong, L. Singh, B.B. Murdock, L. Ohm, H.W.

Cowpea, Vigna unguiculata (L.) Walp., is an important grain legume grown in tropical and subtropical regions, primarily Africa. The parasitic weed Striga gesnerioides (Willd.) Vatke is one of the most important constraints to cowpea production. Host plant resistance is the only practical control ...

Enlace original: https://cgspace.cgiar.org/handle/10568/96343

Investigación en Agricultura
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Boukar, O. ,  Kong, L. ,  Singh, B.B. ,  Murdock, L. ,  Ohm, H.W. ,  [AFLP and AFLPderived SCAR markers associated with Striga gesnerioides resistance in cowpea] ,  AFLP and AFLPderived SCAR markers associated with Striga gesnerioides resistance in cowpea
Journal Article 2017-09

Autor: Oladejo, A.S. Boukar, O. Fatokun, C.A. Obisesan, I.O.

Flower bud thrips, Megalurothrips sjostedti is the most severe field pest of cowpea that causes massive flower abortion which eventually results to substantial yield reduction in Africa. There is paucity of information on the mode of gene actions controlling inheritance of resistance to flower bu...

Enlace original: https://cgspace.cgiar.org/handle/10568/83467

Investigación en Agricultura
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Oladejo, A.S. ,  Boukar, O. ,  Fatokun, C.A. ,  Obisesan, I.O. ,  [Genetic analysis of thrips resistance in cowpea (Vigna unguiculata [L.] Walp.)] ,  Genetic analysis of thrips resistance in cowpea (Vigna unguiculata [L.] Walp.)
Journal Article 2011-12

Autor: Boukar, O. Massawe, F. Muranaka, S. Franco, J. Maziya-Dixon, B.B. Singh, B. Fatokun, C.A.

Cowpea, an indigenous crop to sub-Saharan Africa, is found mainly in the dry savanna regions along with cereals such as millets and sorghum. Cowpea is grown primarily for human consumption of the grains, which are rich in protein, carbohydrates and contain some minerals. The development and deplo...

Enlace original: https://cgspace.cgiar.org/handle/10568/83276

Investigación en Agricultura
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Boukar, O. ,  Massawe, F. ,  Muranaka, S. ,  Franco, J. ,  Maziya-Dixon, B.B. ,  Singh, B. ,  Fatokun, C.A. ,  [Evaluation of cowpea germplasm lines for protein and mineral concentrations in grains] ,  Evaluation of cowpea germplasm lines for protein and mineral concentrations in grains

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