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Journal Article 2014-07

Next generation sequencing based genotyping, cytometry and phenotyping for understanding diversity and evolution of guinea yams

Autor: Girma, G. Hyma, K.E. Asiedu, Robert Mitchell, S.E. Gedil, M. Spillane, Charles

Key message Genotyping by sequencing (GBS) is used to understand the origin and domestication of guinea yams, including the contribution of wild relatives and polyploidy events to the cultivated guinea yams. Abstract Patterns of genetic diversity within and between two cultivated ...

Enlace original: https://cgspace.cgiar.org/handle/10568/76052

Investigación en Agricultura

DIOSCOREA ROTUNDATA

GUINEA YAM

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Girma, G. , Hyma, K.E. , Asiedu, Robert , Mitchell, S.E. , Gedil, M. , Spillane, Charles , [Next generation sequencing based genotyping, cytometry and phenotyping for understanding diversity and evolution of guinea yams] , Next generation sequencing based genotyping, cytometry and phenotyping for understanding diversity and evolution of guinea yams

Journal Article 2013

Potential health benefits of water yam (Dioscorea alata)

Autor: Faustina, Dufie W.M. Oduro, I. Ellis, W. Asiedu, Robert Maziya-Dixon, B.B.

Yam is the third most important root and tuber crop in the tropics but few species are grown as health food and/or for medicinal purposes. To ascertain the potential health benefits and alternate usage of the species, 20 varieties of Dioscorea alata (water yam) were investigated for their total d...

Enlace original: https://cgspace.cgiar.org/handle/10568/76044

Investigación en Agricultura

DIETARY FIBRE

POTASSIUM

DIOSCOREA ALATA

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Faustina, Dufie W.M. , Oduro, I. , Ellis, W. , Asiedu, Robert , Maziya-Dixon, B.B. , [Potential health benefits of water yam (Dioscorea alata)] , Potential health benefits of water yam (Dioscorea alata)

Book 2017

Effects of basal medium and plant growth regulator regimes on meristem and nodal cultures in white yam (D. rotundata)

Autor: Ajayi, A. Balogun, M. Maroya, N. Asiedu, Robert

Yam production is constrained by the limited availability and high cost of quality seed due to its slow vegetative propagation ratio. Micropropagation using nodal and meristem explants have been used to produce clean plantlets, with a 1:4 multiplication ratio for nodal explants and 1:1 ratio for ...

Enlace original: https://cgspace.cgiar.org/handle/10568/90481

Investigación en Agricultura

YAMS

MICROPROPAGATION

NITROGEN

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Ajayi, A. , Balogun, M. , Maroya, N. , Asiedu, Robert , [Effects of basal medium and plant growth regulator regimes on meristem and nodal cultures in white yam (D. rotundata)] , Effects of basal medium and plant growth regulator regimes on meristem and nodal cultures in white yam (D. rotundata)

Journal Article 2013

Diversity of arbuscular mycorrhizal fungi in soils of yam (Dioscorea spp.) cropping systems in four agroecologies of Nigeria

Autor: Dare, M.O. Abaidoo, R.C. Fagbola, O. Asiedu, Robert

The diversity of arbuscular mycorrhizal (AM) fungi in soils under a yam cropping system in four agroecologies of Nigeria was investigated. Soil samples were collected from yam fields at Onne (humid forest, high rainfall area), Ibadan (derived savanna), Abuja (Guinea savanna) and Ubiaja (humid for...

Enlace original: https://cgspace.cgiar.org/handle/10568/76446

Investigación en Agricultura

BIODIVERSITY

ENVIRONMENT

SOIL

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Dare, M.O. , Abaidoo, R.C. , Fagbola, O. , Asiedu, Robert , [Diversity of arbuscular mycorrhizal fungi in soils of yam (Dioscorea spp.) cropping systems in four agroecologies of Nigeria] , Diversity of arbuscular mycorrhizal fungi in soils of yam (Dioscorea spp.) cropping systems in four agroecologies of Nigeria

Journal Article 2014

Management of Meloidogyne incognita in yambased cropping systems with cover crops

Autor: Claudius-Cole, A.O. Fawole, B. Asiedu, Robert Coyne, D.L.

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...

Enlace original: https://cgspace.cgiar.org/handle/10568/75948

Investigación en Agricultura

AESCHYNOMENE

CROTALARIA

DIOSCOREA

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

Journal Article 1999

Yam dormancy: potential mechanisms for its manipulation

Autor: Barker, D.J. Keatinge, J.D.H. Asiedu, Robert

Tuber dormancy is of major importance in yam production, but the lack of a method to consistently break dormancy restricts the rate at which new clones can be multiplied to release to farmers. Much of the work on yam tuber dormancy was small scale, using only one or two clones and a few tubers. O...

Enlace original: https://cgspace.cgiar.org/handle/10568/96006

Investigación en Agricultura

YAMS

DIOSCOREA ESCULENTA

DORMANCY

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Barker, D.J. , Keatinge, J.D.H. , Asiedu, Robert , [Yam dormancy: potential mechanisms for its manipulation] , Yam dormancy: potential mechanisms for its manipulation

Journal Article 2001

Anthracnose: an economic disease of cassava in Africa

Autor: Fokunang, C.N. Dixon, Alfred G.O. Ikotun, T. Tembe-Fokunang, E.A. Akem, C.N. Asiedu, Robert

Cassava anthracnose disease (CAD) caused by the fungus Colletotrichum gloeosporioides f.sp. manihotis has become one of the major economic diseases of cassava in Africa. The expansion of cassava production farmlands particularly in the humid rainfall zones of West and Central Africa has led to an...

Enlace original: https://cgspace.cgiar.org/handle/10568/97197

Investigación en Agricultura

CASSAVA

ANTHRACNOSIS

PLANT DISEASES

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Fokunang, C.N. , Dixon, Alfred G.O. , Ikotun, T. , Tembe-Fokunang, E.A. , Akem, C.N. , Asiedu, Robert , [Anthracnose: an economic disease of cassava in Africa] , Anthracnose: an economic disease of cassava in Africa

Journal Article 2003

Problems and perspectives of yambased cropping systems in Africa

Autor: Ekanayake, I.J. Asiedu, Robert

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...

Enlace original: https://cgspace.cgiar.org/handle/10568/96363

Investigación en Agricultura

YAMS

CROPPING SYSTEMS

FOOD SECURITY

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

Journal Article 2004

Nutrient deficiency symptoms in yams (Dioscorea spp.)

Autor: Shiwachi, H. Okonkwo, C. Asiedu, Robert

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...

Enlace original: https://cgspace.cgiar.org/handle/10568/103377

Investigación en Agricultura

DIOSCOREA

YAMS

NUTRIENT DEFICIENCIES

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Shiwachi, H. , Okonkwo, C. , Asiedu, Robert , [Nutrient deficiency symptoms in yams (Dioscorea spp.)] , Nutrient deficiency symptoms in yams (Dioscorea spp.)

Journal Article 2018-06-27

Can parentage analysis facilitate breeding activities in root and tuber crops?

Autor: Norman, P.E. Asfaw, A. Tongoona, P.B. Danquah, A. Danquah, E.Y. Koeyer, D. de Asiedu, Robert

Controlled pollination in root and tuber crops is challenging. Complex ploidy, cross-incompatibility, erratic flowering patterns, outcrossing, etc., limit the efficiency of breeding progress in these crops. Half-sib breeding that involves random pollination among parents is a viable method to har...

Enlace original: https://cgspace.cgiar.org/handle/10568/96137

Investigación en Agricultura

DNA

PEDIGREE

ROOT CROPS

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Norman, P.E. , Asfaw, A. , Tongoona, P.B. , Danquah, A. , Danquah, E.Y. , Koeyer, D. de , Asiedu, Robert , [Can parentage analysis facilitate breeding activities in root and tuber crops?] , Can parentage analysis facilitate breeding activities in root and tuber crops?

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[U17BkAjayiImprovingNothomNodev.pdf]

[U18ArtNormanParentageInthomDev.pdf]