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International Institute of Tropical Agriculture[Semences et materiel de plantation en Afrique Occidentale]Semences et materiel de plantation en Afrique Occidentale

International Institute of Tropical Agriculture[West Africa seed and planting material, No. 13]West Africa seed and planting material, No. 13

Yams (Dioscorea species of family Dioscoreaceae) are important for food, income, and sociocultural activities especially in West and Central Africa and account for about 93% of the world’s annual production of 38 million tonnes. Breeding of yams is focused primarily on the two dominant species, D...


Asiedu, RobertMignouna, H.Odu, B.Hughes, J.[Yam breeding]Yam breeding

Viruses of the genera Potyvirus, Potexvirus, Badnavirus, Cucumovirus, and Carlavirus infect yams of different species worldwide. These viruses cause a range of symptoms including mosaics, mottle, vein clearing, chlorosis, stunting, and distortion. These lead to a chronic and sometimes severe dise...


Kenyon, L.Shoyinka , S.Hughes, J.Odu, B.[An overview of viruses infecting Dioscorea yams in subSaharan Africa]An overview of viruses infecting Dioscorea yams in subSaharan Africa

Balogun, M.Maroya, N.Taiwo, J.Ossai, C.Ajayi, A.Kumar, P.L.Pelemo, O.Aighewi, B.A.Asiedu, Robert[Clean breeder seed yam tuber production using temporary immersion bioreactors]Clean breeder seed yam tuber production using temporary immersion bioreactors

Two methods (the individual leaf method and whole plant method) for the quantitative assessment of the incidence and severity of anthracnose (Colletotrichum gloeosporioides on yam were developed and evaluated in the field over 3 growing seasons and are proposed for use in epidemiological studies....


Simons, S.A.Green, K.[Quantitative methods for assessing the severity of anthracnose on yam (Dioscorea alata)]Quantitative methods for assessing the severity of anthracnose on yam (Dioscorea alata)

Yam mosaic virus (YMV), genus Potyvirus; family Potyviridae is the most important virus infecting Dioscorea spp. in the tropics. It induces a variety of symptoms ranging from mild mosaic on leaves of infected plants to stunted growth. Field and laboratory studies were conducted in Nigeria to iden...


Odu, B.O.Asiedu, RobertHughes, J.Shoyinka, S.A.Oladiran, O.A.[Evaluation of resistance to yam mosaic virus (YMV), genus Potyvirus in white yam (Dioscorea rotundata Poir.)]Evaluation of resistance to yam mosaic virus (YMV), genus Potyvirus in white yam (Dioscorea rotundata Poir.)

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