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Mignouna, Djana B.Abdoulaye, TahirouAlene, A.Manyong, Victor M.Dontsop Nguezet, Paul M.Ainembabazi, John H.Asiedu, Robert[A microeconometric analysis of household consumption expenditure determinants in yamgrowing areas of Nigeria and Ghana]A microeconometric analysis of household consumption expenditure determinants in yamgrowing areas of Nigeria and Ghana

The Yam Improvement for Income and Food Security in West Africa (YIIFSWA) project was initiated to assess and understand yam-based systems in order to identify the opportunities of interventions that could potentially help to increase productivity in the region. The project consists of two phases...


Mignouna, Djana B.Abdoulaye, TahirouAlene, A.Asiedu, RobertManyong, Victor M.[Characterization of yam-growing households in the project areas of Ghana]Characterization of yam-growing households in the project areas of Ghana

Aighewi, B.A.Maroya, N.G.Asiedu, Robert[Seed yam production from minisetts: a training manual]Seed yam production from minisetts: a training manual

Yam (Dioscoreaspp.) is a primary agricultural commodity and a traditional staple food over much of West and Central Africa, where it is highly profitable both for producers and traders especially when production and storage strategies are successful in securing the supply of urban markets through...


Goergen, Georg E.Dossou, R.Asiedu, RobertHanna, R.[Scale insects on yams in Benin: diversity, incidence and farmers' knowledge and perceptions]Scale insects on yams in Benin: diversity, incidence and farmers' knowledge and perceptions

A range of physical means of manipulating yam tuber dormancy was tested, including the use of temperature, water, electric shock, microwave, heat and storage treatments. Most treatments had very little practical effect on tuber dormancy though differences in dormancy length between clones were de...


Barker, D.J.Keatinge, J.D.H.Asiedu, Robert[The potential of physical means for the manipulation of yam tuber dormancy]The potential of physical means for the manipulation of yam tuber dormancy

Chloroplast DNA (cp) and nuclear ribosomal DNA (rDNA) variation was investigated in 45 accessions of cultivated and wild Manihot species. Ten independent mutations, 8 point mutations and 2 length mutations were identified, using eight restriction enzymes and 12 heterologous cpDNA probes from mung...


Fregene, Martin A.Vargas, J.Ikea, J.Angel, F.Thome, J.Asiedu, RobertAkoroda, M.O.Roca, W.[Variability of chloroplast DNA and nuclear ribosomal DNA in cassava (Manihot esculenta Crantz) and its wild relatives]Variability of chloroplast DNA and nuclear ribosomal DNA in cassava (Manihot esculenta Crantz) and its wild relatives

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

A highly significant relationship was found between the compressive strength of eight boiled cassava (Manihot esculenta Crantz) tuberous roots and their intercellular adhesion, as measured by a retained dry weight method, suggesting that compressive strength is a measure of cell separation. In ge...


Eggleston, G.Asiedu, Robert[Effect of boiling on the texture of cassava clones: a comparison of compressive strength, intercellular adhesion and physiochemical composition of the tuberous roots]Effect of boiling on the texture of cassava clones: a comparison of compressive strength, intercellular adhesion and physiochemical composition of the tuberous roots

The starchy staples of cassava (tuberous roots) provides more than half the calories consumed by more than 200 million people in sub-Saharan Africa, and the leaves are often used as a vegetable providing protein, vitamins and minerals. The cyanogenic potential of cassava has often been cited as a...


Dixon, A.Asiedu, RobertBokanga, M.[Breeding of cassava for low cyanogenic potential: problems, progress and prospects]Breeding of cassava for low cyanogenic potential: problems, progress and prospects
Kanno, H.Dixon, A.Asiedu, RobertHahn, S.K.[Breeding for host plant resistance of cassava green spider mite (CGM) (Mononychellus tanajoa, Bondar) at IITA]Breeding for host plant resistance of cassava green spider mite (CGM) (Mononychellus tanajoa, Bondar) at IITA

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