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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
Mignouna, H.Asiedu, RobertThottappilly, G.Hahn, S.K.[Genetic diversity and phylogenetic relationships in the genus Dioscorea using PCRRAPD]Genetic diversity and phylogenetic relationships in the genus Dioscorea using PCRRAPD

The genus Dioscorea is considered to be one of the most difficult groups for cyto-taxonomic studies because of the large number and small size of the chromosomes. The objective of the present study was to develop an efficient method of chromosome. Observation by identifying the optimum time for c...


Babil, P.K.Kikuno, H.Shiwachi, H.Toyohara, H.Fujigaki, J.Fujimaki, H.Asiedu, Robert[Optimum time for collecting root samples for chromosome observation in Dioscorea spp.]Optimum time for collecting root samples for chromosome observation in Dioscorea spp.

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