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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

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

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.)

For the purpose of constructing yam cDNA libraries, attempts to isolate high quality RNA using several previously reported protocols were unsuccessful. Therefore a protocol was standardized for yam total RNA isolation by using guanidium buffer at the Department of Biology, Virginia Sate Universit...


Narina, S.S.Mohammed, I.Asiedu, RobertMignouna, H.D.[A standardized RNA isolation protocol for yam (Dioscorea alata L) cDNA library construction]A standardized RNA isolation protocol for yam (Dioscorea alata L) cDNA library construction

Abele, S.Koper, E.International Institute of Tropical AgricultureAsiedu, RobertBramel-Cox, P.J.Chikoye, D.López, K.[R4D Review 2]R4D Review 2

Yam leaves were collected during surveys of major yam producing agro-ecological zones (AEZs) in Ghana (n = 628) and Togo (n = 218) respectively, in 2005. Leaf tissues were tested for Cucumber mosaic virus (CMV), Dioscorea mottle virus (DMoV), Yam mild mosaic virus (YMMV), Yam mosaic virus (YMV) a...


Eni, A.O.Hughes, Jacqueline d'ArrosAsiedu, RobertRey, M.E.C.[Survey of the incidence and distribution of viruses infecting yam (Dioscorea spp.) in Ghana and Togo]Survey of the incidence and distribution of viruses infecting yam (Dioscorea spp.) in Ghana and Togo

The project Poverty Alleviation and Enhanced Food Availability in West Africa through Improved Yam Technologies proposed to improve yam production in five West African countries (Nigeria, Bénin, Togo, Ghana, Côte d’Ivoire) during the period from 2000 to 2003. A recognized need for productive, sta...


Carsky, R.J.Asiedu, RobertCornet, D.[Review of soil fertility management for yambased systems in West Africa]Review of soil fertility management for yambased systems in West Africa

In variety development, sensory evaluation is not only the most important hurdle after all the necessary agronomic characteristics have been developed but also a major determinant of acceptability of the variety, as well as a major determinant in the subsequent adoption and use of the variety. Ei...


Otoo, E.Asiedu, Robert[Sensory evaluation: the last hurdle in varietal development of yams (Dioscorea rotundata, poir) in Ghana]Sensory evaluation: the last hurdle in varietal development of yams (Dioscorea rotundata, poir) in Ghana

Millions of people around the world, particularly in West Africa, depend on yam for food and income, however global yam production has been fluctuating since 2007. Virus infections contribute to yam yield losses and the occurrence of mixed virus infections is potentially catastrophic. Planting of...


Eni, A.Hughes, J.Asiedu, RobertRey, M.[Incidence and diversity of mixed viruses lower in yam tubers and tuber sprouts compared with field leaf samples: Implications for virusfree planting material control strategy]Incidence and diversity of mixed viruses lower in yam tubers and tuber sprouts compared with field leaf samples: Implications for virusfree planting material control strategy

In vitro culture media capable of regenerating moderate to high shoots and/or plantlets from meristems of two yam species – Dioscorea rotundata and Dioscorea alata within comparable duration of 10 weeks as commonly obtained in other monocots and root and tuber crops were investigated. The study c...


Adeniyi, O.J.Adetimirin, V.O.Ingelbrecht, I.L.Asiedu, Robert[Shoot and plantlet regeneration from meristems of Dioscorea rotundata poir and Dioscorea alata L.]Shoot and plantlet regeneration from meristems of Dioscorea rotundata poir and Dioscorea alata L.

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