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Journal Article 2009

Producing yam (Dioscorea) seeds through controlled crosses

Autor: Mignouna, H.D. Abang, Mathew M. Asiedu, Robert Geeta, R.

This protocol describes how to produce yam (Dioscorea) seeds through controlled pollination of flowers on female plants. Pollination by flower thrips takes place naturally in normal yam-growing environments in the presence of flowering male and female genotypes, although it is not efficient. This...

Enlace original: https://cgspace.cgiar.org/handle/10568/90221

Investigación en Agricultura

DIOSCOREA

GENOTYPES

POLLINATION

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Mignouna, H.D. , Abang, Mathew M. , Asiedu, Robert , Geeta, R. , [Producing yam (Dioscorea) seeds through controlled crosses] , Producing yam (Dioscorea) seeds through controlled crosses

Journal Article 2009

Culturing meristematic tissue and node cuttings from yams (Dioscorea)

Autor: Mignouna, H.D. Abang, Mathew M. Asiedu, Robert Geeta, R.

Enlace original: https://cgspace.cgiar.org/handle/10568/90223

Investigación en Agricultura

DIOSCOREA

NODE CUTTINGS

MERISTEM CULTURE

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Mignouna, H.D. , Abang, Mathew M. , Asiedu, Robert , Geeta, R. , [Culturing meristematic tissue and node cuttings from yams (Dioscorea)] , Culturing meristematic tissue and node cuttings from yams (Dioscorea)

Journal Article 2009

True yams (Dioscorea): a biological and evolutionary link between eudicots and grasses

Autor: Mignouna, H.D. Abang, Mathew M. Asiedu, Robert Geeta, R.

Enlace original: https://cgspace.cgiar.org/handle/10568/90217

Investigación en Agricultura

DIOSCOREA

EUDICOTS

GRASSES

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Mignouna, H.D. , Abang, Mathew M. , Asiedu, Robert , Geeta, R. , [True yams (Dioscorea): a biological and evolutionary link between eudicots and grasses] , True yams (Dioscorea): a biological and evolutionary link between eudicots and grasses

Journal Article 2009

Estimation of the nuclear DNA content in some representative of genus Dioscorea

Autor: Obidiegwu, J.E. Rodríguez, E. Ene-Obong, E.E. Loureiro, J. Muoneke, C.O. Santos, C. Kolesnikova-Allen, M. Asiedu, Robert

Nuclear DNA content of 54 accessions of 6 Dioscorea species collected from West African countries were determined using flow cytometry. Observed ploidy levels are diploid (2x), triploid (3x), tetraploid (4x), hexaploid (6x) and octoploid (8x). DNA index varied from 0.36 to 1.54 depending on the c...

Enlace original: https://cgspace.cgiar.org/handle/10568/90219

Investigación en Agricultura

DIOSCOREA

DNA CONTENT

FLOW CYTOMETRY

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Obidiegwu, J.E. , Rodríguez, E. , Ene-Obong, E.E. , Loureiro, J. , Muoneke, C.O. , Santos, C. , Kolesnikova-Allen, M. , Asiedu, Robert , [Estimation of the nuclear DNA content in some representative of genus Dioscorea] , Estimation of the nuclear DNA content in some representative of genus Dioscorea

Journal Article 2010

Optimum time for collection of root samples for chromosome observation in yams (Dioscorea spp.)

Autor: Babil, P.K. Kikuno, H. Shiwachi, H. Toyohara, H. Fujigaki, J. Fujimaki, H. Asiedu, Robert

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 co...

Enlace original: https://cgspace.cgiar.org/handle/10568/90365

Investigación en Agricultura

CELL DIVISION

CYTOLOGY

DIOSCOREA

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

Journal Article 1998

Diagnosis of yam viruses

Autor: Hughes, J. Dongo, L. Ng, S.Y.C.

Diagnosis of virus diseases of yams at the International Institute of Tropical Agriculture (IITA) is based on the use of indicator plants, insect vectors, serological diagnostics, and electron microscopy (EM). Yam I (YVI), yam mosaic (YMV), and Dioscorea dumetorum (DdV) potyviruses even in mixed ...

Enlace original: https://cgspace.cgiar.org/handle/10568/95936

Investigación en Agricultura

DIOSCOREA

PLANT VIRUSES

DIAGNOSIS

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Hughes, J. , Dongo, L. , Ng, S.Y.C. , [Diagnosis of yam viruses] , Diagnosis of yam viruses

Journal Article 1996

Susceptibility of yam cultivars to minisett rot pathogens

Autor: Osai, E.O. Ikotun, T. Asiedu, Robert Hahn, S.K.

The response of yam (Dioscorea) cultivars to artificial and natural infections with minisett rot pathogens was investigated. None of the 20 yam cultivars were resistant to Sclerotium rolfsii [Corticium rolfsii] or Trichoderma longibrachyatum. Cultivars TDa 84/093, 85/236, 85/257, TDr 608, 745, 81...

Enlace original: https://cgspace.cgiar.org/handle/10568/101009

Investigación en Agricultura

ASPERGILLUS NIGER

DIOSCOREA

DIOSCOREA ALATA

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Osai, E.O. , Ikotun, T. , Asiedu, Robert , Hahn, S.K. , [Susceptibility of yam cultivars to minisett rot pathogens] , Susceptibility of yam cultivars to minisett rot pathogens

Conference Paper 1994

Genetic diversity and phylogenetic relationships in the genus Dioscorea using PCRRAPD

Autor: Mignouna, H. Asiedu, Robert Thottappilly, G. Hahn, S.K.

Enlace original: https://cgspace.cgiar.org/handle/10568/101777

Investigación en Agricultura

DIOSCOREA

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Mignouna, H. , Asiedu, Robert , Thottappilly, 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

Journal Article 2012

Re-evaluation of Yam Mosaic Virus (YMV) detection methods

Autor: Eni, A. Hughes, J. Asiedu, Robert Rey, M.

Accurate and timely detection is vital for mitigation of tuber yield losses resulting from yam mosaic virus (YMV) infection on yam, a major food security crop in West Africa. The observation, from our previous studies, that the triple antibody sandwich enzyme-linked immunosorbent assay (TAS-ELISA...

Enlace original: https://cgspace.cgiar.org/handle/10568/79829

Investigación en Agricultura

YAM MOSAIC VIRUS

DETECTION SENSITIVITY

GENUS POTYVIRUS

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Eni, A. , Hughes, J. , Asiedu, Robert , Rey, M. , [Re-evaluation of Yam Mosaic Virus (YMV) detection methods] , Re-evaluation of Yam Mosaic Virus (YMV) detection methods

Journal Article 2014

Yam propagation using Aeroponics technology

Autor: Maroya, N. Balogun, M. Asiedu, Robert Aighewi, B.A. Kumar, P.L. Augusto, J.

Aims: To study yam propagation and seed yam tuber production in aeroponics system.Study Design: The experiment was conducted in a randomized complete block designand treatments were replicated three times.Place of Study: This experiment was carried out at the International Institute of TropicalAg...

Enlace original: https://cgspace.cgiar.org/handle/10568/75942

Investigación en Agricultura

YAMS

DIOSCOREA

PROPAGATION

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Maroya, N. , Balogun, M. , Asiedu, Robert , Aighewi, B.A. , Kumar, P.L. , Augusto, J. , [Yam propagation using Aeroponics technology] , Yam propagation using Aeroponics technology

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