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Genetic diversity of a Bambara groundnut germplasm representing accessions from 25 African countries, maintained at the International Institute of Tropical Agriculture (IITA; Nigeria) was evaluated based on seed patterns, qualitative characters, quantitative traits and Diversity Arrays Technique ...


Olukolu, B.A.Mayes, S.Stadler, F.Ng, N.Q.Fawole, I.Dominique, D.Azam-Ali, S.N.Abbott, A.G.Kole, C.[Genetic diversity in bambara groundnut (Vigna subterranea (L.) verdc.) as revealed by phenotypic descriptors and DArT marker analysis]Genetic diversity in bambara groundnut (Vigna subterranea (L.) verdc.) as revealed by phenotypic descriptors and DArT marker analysis

The impact of cassava transformation technologies for agricultural development in Africa will depend largely on how successfully these capabilities are transferred and adapted to the African environment and local needs. Here we report on the first successful establishment of cassava regeneration ...


Hankoua, B.Taylor, N.Ng, S.Fawole, I.Puonti-Kaerlas, J.Padmanabhan, C.Yadav, J.S.Fauquet, Claude M.Dixon, A.Fondong, V.N.[Production of the first transgenic cassava in Africa via direct shoot organogenesis from friable embryogenic calli and germination of maturing somatic embryos]Production of the first transgenic cassava in Africa via direct shoot organogenesis from friable embryogenic calli and germination of maturing somatic embryos

Single node cuttings from pathogen-tested in vitro plantlets of white guinea yam (D. rotundata), cultivar TDr 93–23, were cultured in tuberization and half- and full-strength Murashige and Skoog media with 5% or 8% sucrose, with or without agar, in light or darkness and at 25 or 18°C. Microtuberi...


Balogun, M.Fawole, I.Ng, S.Y.C.Ng, N.Q.Shiwachi, H.Kikuno, H.[Interaction among cultural factors in microtuberization of white yam (Dioscorea rotundata)]Interaction among cultural factors in microtuberization of white yam (Dioscorea rotundata)

Investigations were conducted to select the appropriate Agrobacterium tumefaciens strains for efficient transformation of the banana cultivar ‘Williams’. Three A. tumefaciens strains (EHA105, C58, and GV2260) were used for the study. The ability of these strains to transfer β-glucuronidase (GUS) ...


Esuola, C.O.Tripathi, L.Fawole, I.[Effects of various virulent strains of Agrobacterium tumefaciens on genetic transformation of banana (Musa sp.) cultivar williams]Effects of various virulent strains of Agrobacterium tumefaciens on genetic transformation of banana (Musa sp.) cultivar williams

The first major insect pest of cowpea at reproductive stage is the flower bud thrips (FTh), which, if not controlled, is capable of causing significant grain yield reduction. Breeding for resistance to FTh in cowpea has been hindered by the quantitative nature of the resistance, and the breakdown...


Omo-Ikerodah, E.E.Fawole, I.Fatokun, C.A.[Genetic mapping of quantitative trait loci (QTLs) with effects on resistance to flower bud thrips (megalurothrips sjostedti) identified in recombinant inbred lines of cowpea (Vigna unguiculata (L.) Walp)]Genetic mapping of quantitative trait loci (QTLs) with effects on resistance to flower bud thrips (megalurothrips sjostedti) identified in recombinant inbred lines of cowpea (Vigna unguiculata (L.) Walp)

Cowpea is an important legume in sub-Saharan Africa where its protein rich grains are consumed. Insect pests constitute a major constraint to cowpea production. Flower bud thrips (FTh) is thefirst major pest of cowpea at the reproductive stage and if not controlled with insecticides is capable of...


Omo-Ikerodah, E.E.Fatokun, C.A.Fawole, I.[Genetic analysis of resistance to flower bud thrips (Megalurothrips sjostedti) in cowpea (Vigna unguiculata [L.] Walp.)]Genetic analysis of resistance to flower bud thrips (Megalurothrips sjostedti) in cowpea (Vigna unguiculata [L.] Walp.)

Single node cuttings of two genotypes each of Dioscorea alata and D. rotundata from both plants grown in screen houses and in vitro plantlets were cultured in a tuberization medium. The screen house explants had significantly higher plantlet tuberization and primary nodal complex formation, and m...


Balogun, M.O.Ng, S.Y.Shiwachi, H.Ng, N.Q.Fawole, I.[Comparative effects of explant source and genotype on in vitro tuberization in Dioscorea alata and D. rotundata]Comparative effects of explant source and genotype on in vitro tuberization in Dioscorea alata and D. rotundata

Molecular-marker-aided evaluation of germplasm plays an important role indefining the genetic diversity of plant genotypes for genetic and populationimprovement studies. A collection of African cassava landraces and elite culti-vars was analysed for genetic diversity using 20 amplified fragment l...


Raji, A.A.J.Fawole, I.Gedil, M.Dixon, Alfred G.O.[Genetic differentiation analysis of African cassava (Manihot esculenta) landraces and elite germplasm using amplified fragment length polymorphism and simple sequence repeat markers]Genetic differentiation analysis of African cassava (Manihot esculenta) landraces and elite germplasm using amplified fragment length polymorphism and simple sequence repeat markers

Scarcity of seed, pest and diseases are major constraints to yam production. Tissue culture techniques of meristem culture combined with heat therapy have been used to produce high-yielding virus-tested plantlets of root crops, which are later multiplied through micropropagation. However, the mic...


Balogun, M.Ng, S.Y.C.Fawole, I.Shiwachi, H.Kikuno, H.[Relative effects of Uniconazole p and other growth regulators on micropropagation ratio of yam (Dioscorea spp.) plantlets at different growth phases]Relative effects of Uniconazole p and other growth regulators on micropropagation ratio of yam (Dioscorea spp.) plantlets at different growth phases
Balogun, M.Ng, N.Q.Fawole, I.Kikuno, H.[Variations in microtuberization among local, improved and exotic yam accessions in Nigeria]Variations in microtuberization among local, improved and exotic yam accessions in Nigeria

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