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The yam nematode,Scutellonema bradys, which can cause dry rot disease of yam (Dioscoreaspp.), was recorded forthe first time from Costa Rica in four species of yam occurring in the Atlantic and north regions. Morphometric measurements fromtwo populations from each region using ten female and 11 m...


Humphreys-Pereira, D.Williamson, V.Lee, S.Coyne, D.L.Salazar, L.Gómez Alpízar, L.[Molecular and morphological characterisation of Scutellonema bradys from yam in Costa Rica and development of specific primers for its detection]Molecular and morphological characterisation of Scutellonema bradys from yam in Costa Rica and development of specific primers for its detection

The effect of intercropping cover crops was with yam was assessed for nematode management both inpot and field conditions in Nigeria. The cover crops were sown with yams in pots containing sterile soiland inoculated with 5000 eggs of Meloidogyne incognita. In the field, each cover crop was separa...


Claudius-Cole, A.O.Fawole, B.Asiedu, RobertCoyne, D.L.[Management of Meloidogyne incognita in yambased cropping systems with cover crops]Management of Meloidogyne incognita in yambased cropping systems with cover crops

Yams (Dioscorea spp.) constitute an important starchy staple in sub-Saharan Africa (SSA) where food security for a growing population is a critical issue. Mixed cropping in yam based systems is the norm in the region and productivity of yams in these systems is below potential. It is concluded th...


Ekanayake, I.J.Asiedu, Robert[Problems and perspectives of yambased cropping systems in Africa]Problems and perspectives of yambased cropping systems in Africa

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

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

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

Tamiru, M.Natsume, S.Takagi, H.White, B.Yaegashi, H.Shimizu, M.Yoshida, K.Uemura, A.Oikawa, K.Abe, A.Urasaki, N.Matsumura, HBabil, P.Yamanaka, S.Matsumoto, R.Muranaka, S.Girma, G.López Montes, A.Gedil, M.Bhattacharjee, R.Abberton, M.T.Kumar, P.L.Rabbi, Ismail Y.Tsujimura, M.Terachi, T.Haerty, W.Corpas, M.Kamoun, S.Kahl, G.Takagi, H.Asiedu, RobertTerauchi, R.[Genome sequencing of the staple food crop white Guinea yam enables the development of a molecular marker for sex determination]Genome sequencing of the staple food crop white Guinea yam enables the development of a molecular marker for sex determination

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