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Cowpea is an important crop for food security, as it is a primary source of protein and cash income for farmers in the dry savanna areas of Sub-Saharan Africa. Improved varieties should contain reasonable amounts of protein in the grains, and to ensure this, timely and cost-effective analytical m...


Ishikawa, H.Boukar, O.Fatokun, C.A.Shono, M.Muranaka, S.[Development of calibration model to predict nitrogen content in single seeds of cowpea (Vigna unguiculata) using near infrared spectroscopy]Development of calibration model to predict nitrogen content in single seeds of cowpea (Vigna unguiculata) using near infrared spectroscopy

Cowpea is traditionally important as an affordable source of protein and minerals and of cash income in sub-Saharan Africa, especially for small-scale farmers who have limited options for food and cash crops. The development and deployment of cowpea varieties with improved nutrition and quality t...


Muranaka, S.Shono, MMyoda, T.Takeuchi, J.Franco, J.Nakazawa, Y.Boukar, O.Takagi, H.[Genetic diversity of physical, nutritional and functional properties of cowpea grain and relationships among the traits]Genetic diversity of physical, nutritional and functional properties of cowpea grain and relationships among the traits
Oyatomi, O.Fatokun, C.A.Boukar, O.Abberton, M.T.Ilori, C.[Screening wild vigna species and cowpea (Vigna unguiculata) landraces for sources of resistance to striga gesnerioides]Screening wild vigna species and cowpea (Vigna unguiculata) landraces for sources of resistance to striga gesnerioides

Suzuki, K.Fatokun, C.A.Boukar, O.[Increasing cowpea productivity combining rock phosphate and arbuscular mycorrhizal fungi inoculation in sub-Saharan Africa]Increasing cowpea productivity combining rock phosphate and arbuscular mycorrhizal fungi inoculation in sub-Saharan Africa

The parasitic flowering plants Striga gesnerioides (Willd.) Vatke and Alectra vogelii (Benth.) are formidable cowpea production constraints in the West and Central African savanna. The two parasites cause substantial yield reduction in cowpea in the dry savannas. A field study was conducted to sc...


Omoigui, L.O.Kamara, A.Ishiyaku, M.Boukar, O.[Comparative responses of cowpea breeding lines to Striga and Alectra in the dry savanna of northeast Nigeria]Comparative responses of cowpea breeding lines to Striga and Alectra in the dry savanna of northeast Nigeria

A field study was conducted to determine the rate of genetic improvement in grain and fodder yields and associated agronomic and physiological changes of determinate and semideterminate cowpea [Vigna unguiculata (L.) Walp.] genotypes developed in the Nigerian Sudan savannas in 1974 to 2004. Resul...


Kamara, A.Y.Tefera, H.Ewansiha, S.U.Ajeigbe, Hakeem A.Okechukwu, R.U.Boukar, O.Omoigui, L.O.[Genetic gain in yield and agronomic characteristics of cowpea cultivars developed in the Sudan savannas of Nigeria over the past three decades]Genetic gain in yield and agronomic characteristics of cowpea cultivars developed in the Sudan savannas of Nigeria over the past three decades
Dumet, D.Fatokun, C.A.Pasquet, R.Ehlers, J.Kumar, L.Hearne, S.Sonder, KaiAladele, S.Boukar, O.Vodouhe, R.S.Garino, L.[Sharing of responsibilities of cowpea and wild relative long term conservation]Sharing of responsibilities of cowpea and wild relative long term conservation

The parasitic weed Striga gesnerioides (Willd) Vatke is one of the most important constraints to cowpea production in the dry savanna. Yield losses due to S. gesnerioides range from 83 to 100%. No single method however seems to be fully adequate in the control of this parasite. One practice, host...


Omoigui, L.O.Kamara, A.Y.Massawe, F.S.Ishiyaku, M.F.Boukar, O.Alabi, S.O.Ekeleme, F.[Evaluation of cowpea genotypes for their reactions to Striga gesnerioides in the dry savanna of northeast Nigeria]Evaluation of cowpea genotypes for their reactions to Striga gesnerioides in the dry savanna of northeast Nigeria

Cowpea flower bud thrips causes about 80% yield losses in cowpea. Host plant resistance is the most easy and durable solution to the damaging effects caused by this insect. However, resistance to thrips is quantitatively inherited, thus less amenable through conventional breeding. The objective o...


Sobda, G.Boukar, O.Tongoona, P.B.Ayertey, J.Offei, K.S.[Quantitative trait loci (QTL) for cowpea resistance to flower bud thrips (Megalurothrips sjostedti Trybom)]Quantitative trait loci (QTL) for cowpea resistance to flower bud thrips (Megalurothrips sjostedti Trybom)

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