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Mignouna, B.D.Maroya, N.Aighewi, B.Kumar, L.Abdoulaye, T.Akinola, A.A.Otabil, P.Braimah, H.Alene, A.D.Manyong, V.M.Asiedu, R.[Impact assessment report of YIIFSWA project: raising household income, improving food security and reducing poverty in Ghana]Impact assessment report of YIIFSWA project: raising household income, improving food security and reducing poverty in Ghana

To date, several viruses of different genera have been reported to infect yam (Dioscorea spp.). The full diversity of viruses infecting yam, however, remains to be explored. High-throughput sequencing (HTS) methods are increasingly being used in the discovery of new plant viral genomes. In this s...


Silva, G.Bömer, M.Rathnayake, A.I.Sewe, S.O.Visendi, P.Oyekanmi, J.O.Quain, M.D.Akomeah, B.Kumar, P.L.Seal, S.E.[Molecular characterization of a new virus species identified in yam (Dioscorea spp.) by high-throughput sequencing]Molecular characterization of a new virus species identified in yam (Dioscorea spp.) by high-throughput sequencing

Symptoms of nutritional deficiencies in D. alata and D. rotundata were observed when yam plants were grown in nutrient solutions from which any of the following had been omitted: N, P, K, Ca, Mg, Zn, Fe, B, Mn, Cu and Mo. The symptoms of deficiency of major elements were visible on plants of both...


Shiwachi, H.Okonkwo, C.Asiedu, Robert[Nutrient deficiency symptoms in yams (Dioscorea spp.)]Nutrient deficiency symptoms in yams (Dioscorea spp.)

Screening carotenoids of elite accessions of yam (Dioscorea spp.) used in the global yam breeding program has been conducted to quantitatively determine the carotenoid composition of the crop. Comparisons to previous data reporting cerotenoid levels in yam has been made, in order to deduce greate...


Price, E.J.Bhattacharjee, R.López Montes, A.Fraser, Paul D.[Carotenoid profiling of yams: clarity, comparisons and diversity]Carotenoid profiling of yams: clarity, comparisons and diversity

Introduction Ninety-seven percent of yam (Dioscorea spp.) production takes place in low income food deficit countries (LIFDCs) and the crop provides 200 calories a day to approximately 300 million people. Therefore, yams are vital for food security. Yams have high-yield potential and high market ...


Price, E.J.Bhattacharjee, R.López Montes, A.Fraser, Paul D.[Metabolite profiling of yam (Dioscorea spp.) accessions for use in crop improvement programmes]Metabolite profiling of yam (Dioscorea spp.) accessions for use in crop improvement programmes

Yam (Dioscorea spp.) is a major staple crop with high agricultural and cultural significance for over 300 million people in West Africa. Despite its importance, productivity is miserably low. A better understanding of the environmental context in the region is essential to unlock the crop’s poten...


Alabi, T.R.Adebola, P.O.Asfaw, A.Koeyer, D. deLópez Montes, A.Asiedu, Robert[Spatial multivariate cluster analysis for defining target population of environments in west Africa for yam breeding]Spatial multivariate cluster analysis for defining target population of environments in west Africa for yam breeding

Water yam (Dioscorea alata L.) is one of the most important food yams with wide geographical distribution in tropics. One of the major constraints to water yam production is anthracnose disease caused by a fungus, Colletotrichum gloesporioides (Penz.). There are no economically feasible solutions...


Bhattacharjee, R.Nwadili, C.O.Saski, C.A.Agre, A.P.Scheffle, B.E.Augusto, J.López Montes, A.Onyeka, J.T.Kumar, P.L.Bandyopadhyay, Ranajit[An EST-SSR based genetic linkage map and identification of QTLs for anthracnose disease resistance in water yam (Dioscorea alata L.)]An EST-SSR based genetic linkage map and identification of QTLs for anthracnose disease resistance in water yam (Dioscorea alata L.)

In vitro culture offers many advantages for yam germplasm conservation, propagation and international distribution. However, low virus titres in the generated tissues pose a challenge for reliable virus detection, which makes it difficult to ensure that planting material is virus-free. In this st...


Bömer, M.Rathnayake, A.I.Visendi, P.Sewe, S.O.Sicat, J.P.A.Silva, G.Kumar, P.L.Seal, S.E.[Tissue culture and next-generation sequencing: a combined approach for detecting yam (Dioscorea spp.) viruses]Tissue culture and next-generation sequencing: a combined approach for detecting yam (Dioscorea spp.) viruses

Yam (Dioscorea spp), a multi-species, polyploid, and vegetatively propagated tuber crop, is cultivated widely in the tropics and subtropics. Over 95% of the world's yam production occurs in West and Central Africa where white yam (Dioscorea rotundata Poir.) is the most important among cultivated ...


Otoo, E.Akromah, R.Kolesnikova-Allen, M.Asiedu, Robert[Delineation of pona complex of yam in Ghana using SSR markers]Delineation of pona complex of yam in Ghana using SSR markers

Proffesor Michael Abberton, Head, Genetic Resources Center giving opening remarks at the event.


International Institute of Tropical Agriculture[YIIFSWA II OPENDAY - Opening Remarks by Prof Abberton]YIIFSWA II OPENDAY - Opening Remarks by Prof Abberton

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