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Twenty-five villages ofNorthern Beninwere surveyed to identify the constraints of yamchips production, assess the diversity of storage insects on yamchips, and document farmers’ perception of their impacts on the stocks and their traditional management practices. Damages due to storage insects (6...


Loko, Y.Dansi, M.Tamo, M.Bokonon-Ganta, A.H.Assogba, PercevalDansi, M.Vodouhe, R.S.Akouegninou, A.Sanni, A.[Storage insects on yam chips and their traditional management in Northern Benin]Storage insects on yam chips and their traditional management in Northern Benin

Twenty-two genotypes of deep yellow fleshed D. dumetorum were analysed for carotenoids using High Performance Liquid Chromatography (HPLC) and for similarities in their provitamin A characteristics using Cluster Analysis (CA). The contribution of each carotenoid to provitamin A content was invest...


Alamu, E.O.Maziya-Dixon, B.B.Ferede-Menkir, R.Popoola, I.Asiedu, RobertGondwe, T.N.P.[Characterization and classification of the provitamin A carotenoids of deep yellow-fleshed bitter yam (Dioscorea dumetorum) varieties]Characterization and classification of the provitamin A carotenoids of deep yellow-fleshed bitter yam (Dioscorea dumetorum) varieties

Yam (Dioscorea spp.) plants are potentially hosts to a diverse range of badnavirus species (genus Badnavirus, family Caulimoviridae), but their detection is complicated by the existence of integrated badnavirus sequences in some yam genomes. To date, only two badnavirus genomes have been characte...


Bömer, M.Turaki, A.A.Silva, G.Kumar, P.L.Seal, S.E.[A sequence-independent strategy for amplification and characterisation of episomal badnavirus sequences reveals three previously uncharacterised yam badnaviruses]A sequence-independent strategy for amplification and characterisation of episomal badnavirus sequences reveals three previously uncharacterised yam badnaviruses

The use of commercial inoculants containing non-indigenous arbuscular mycorrhizal fungi (AMF) is an emerging technology towards improving crop production in Africa. The present study aims at evaluating the influence of two strains of commercial arbuscular mycorrhizal fungi (AMF) products, based o...


Tchabi, A.Hountondji, F.C.C.Ogunsola, B.Lawouin, L.Coyne, D.L.Wiemken, A.Oehl, F.[The Influence of Arbuscular Mycorrhizal Fungi Inoculation on micro-propagated hybrid yam (Dioscorea spp.) growth and root knot nematode (Meloidogyne spp.) suppression]The Influence of Arbuscular Mycorrhizal Fungi Inoculation on micro-propagated hybrid yam (Dioscorea spp.) growth and root knot nematode (Meloidogyne spp.) suppression

African food system Yam (Dioscorea spp.) is a multispecies, clonally propagated crop cultivated for its starchy tubers. About 10 species are widely cultivated around the world, but only D. rotundata, D. alata, and D. cayenensis are the most widely cultivated species in West Africa, accounting for...


López Montes, A.Bhattacharjee, R.Girma Tessema, G.[Yam breeding at IITA: achievements, challenges, and prospects]Yam breeding at IITA: achievements, challenges, and prospects

The responses of 24 white yam (Dioscorea rotundata) cultivars to mechanical and vector transmission with each of three viruses infecting yams were assessed through enzyme-linked immunosorbent assay (ELISA) and symptom development. The viruses were Dioscorea alata virus (DAV), genus Potyvirus; Dio...


Odu, B.O.Hughes, J.D.A.Asiedu, RobertNg, N.Q.Shoyinka, S.A.Oladiran, O.A.[Responses of white yam (Dioscorea rotundata) cultivars to inoculation with three viruses]Responses of white yam (Dioscorea rotundata) cultivars to inoculation with three viruses

Yam (Dioscorea spp.), a multispecies, polyploidy, and vegetatively propagated crop, is an economically important staple food for more than 300 million people in West Africa, Asia, Oceania, and the Caribbean. The five major yam-producing countries in West Africa (Bénin, Côte d’Ivoire, Ghana, Niger...


Gedil, M.Bhattacharjee, R.López Montes, A.[Genomics for transforming yam breeding]Genomics for transforming yam breeding
Autor: Tripathi, L.

Biotechnology has opened unprecedented avenues for exploring biological systems. Transgenics is one of the key techniques particularly useful for the genetic improvement of crops that are not amenable to conventional breeding, such as those that are vegetatively propagated. In IITA, transgenic te...


Tripathi, L.[Transgenics in crop improvement research at IITA]Transgenics in crop improvement research at IITA

Yams are staples in West Africa. They are propagated from tubers in an informal seed system. This encourages a build-up of diseases, and necessitates the rapid development of a formal seed system where certified seeds are functional. Although few reports exist on the use of meristem culture to ge...


Balogun, M.Maroya, N.Augusto, J.Ajayi, A.Kumar, P.L.Aighewi, B.A.Asiedu, Robert[Relative efficiency of positive selection and tissue culture for generating pathogen-free planting materials of yam (Dioscorea spp.)]Relative efficiency of positive selection and tissue culture for generating pathogen-free planting materials of yam (Dioscorea spp.)

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