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Conference Paper 1994

Autor: Agueguia, A. Fatokun, C. Hahn, S.K.

Six hybrid cocoyam clones from a uniform yield trial and a Local White accession from the germplasm collection were crossed in a diallel excluding reciprocals, in order to determine the inheritance pattern of resistance to cocoyam root rot blight complex (CRRBC) disease. The 21 progenies from thi...

Enlace original: https://cgspace.cgiar.org/handle/10568/100957

Investigación en Agricultura
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Agueguia, A. ,  Fatokun, C. ,  Hahn, S.K. ,  [The genetics of resistance to cocoyam root rot blight complex disease in Xanthosoma sagittifolium(L.)Schott] ,  The genetics of resistance to cocoyam root rot blight complex disease in Xanthosoma sagittifolium(L.)Schott
Journal Article 1992

Autor: Hahn, S.K. Bai, V.K. Asiedu, Robert

One suspected mutant with the broad, thick and dark green leaves characteristic of tetraploid cassava was found from each of the cassava clones TMS 91934 and TMS 89/00037-17 planted out in the field. Cytological examination confirmed them as tetraploids with chromosomes number 2n=4x=72. The mutan...

Enlace original: https://cgspace.cgiar.org/handle/10568/99901

Investigación en Agricultura
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Hahn, S.K. ,  Bai, V.K. ,  Asiedu, Robert ,  [Spontaneous somatic tetraploids in cassava] ,  Spontaneous somatic tetraploids in cassava
Journal Article 1984

Autor: Rao, P.V. Hahn, S.K.

An automated enzymic method for the analysis of cyanide in cassava and cassava products is described. A total of 300 analyses a day can be handled easily. A wide range of free (nonglycosidic) or bound (cyano‐substituted glycosides) cyanides (0.4–40 μg HCN ml−1) can be assayed in the extracted sol...

Enlace original: https://cgspace.cgiar.org/handle/10568/96439

Investigación en Agricultura
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Rao, P.V. ,  Hahn, S.K. ,  [An automated enzymatic assay for determining the cyanide content of cassava (Manihot esculenta) and cassava products] ,  An automated enzymatic assay for determining the cyanide content of cassava (Manihot esculenta) and cassava products
Book 1993

Autor: Hahn, S.K.

Diverses es peces d'ignames sont cultlvees da ns la "zone de civilisation de l'igname" en Afriq ue oeci dentale. Que ce soit au champ ou en entrepot, l'igname est exposee a des maladies provoquees par des virus, bacteries, champignons et nematodes. II est possible de lutter contre ces maladies gr...

Enlace original: https://cgspace.cgiar.org/handle/10568/97290

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Hahn, S.K. ,  [Lutte contre les maladies de ligname: Guide de recherche de lIita, No. 39] ,  Lutte contre les maladies de ligname: Guide de recherche de lIita, No. 39
Book 1997

Autor: Hahn, S.K.

Cassava is playing a major role in African food systems. Processing of cassava has several objectives and advantages. Traditionally, cassava is processed into many products. However, several constraints affect cassava processing. Cyanide content in the roots is a major limitation of cassava utili...

Enlace original: https://cgspace.cgiar.org/handle/10568/95909

Investigación en Agricultura
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Hahn, S.K. ,  [Traditional processing and utilization of cassava in Africa: IITA research guide, No. 41] ,  Traditional processing and utilization of cassava in Africa: IITA research guide, No. 41
Book 1995

Autor: Hahn, S.K. Osiru, D. Otoo, J. Akoroda, M.O.

Yam is an important food crop, especially in the ‘yam zone' of West Africa. Total world production is about 20-25 million ton per annum, some 70 per cent of it grown in Nigeria. Although regarded mainly as a source of carbohydrate, some species are nearly as rich in protein as rice or maize.

Enlace original: https://cgspace.cgiar.org/handle/10568/97242

Investigación en Agricultura
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Hahn, S.K. ,  Osiru, D. ,  Otoo, J. ,  Akoroda, M.O. ,  [Production of yams: present role and future prospect] ,  Production of yams: present role and future prospect
Book Chapter 1992

Autor: Bai, K.V. Hahn, S.K.

In many crop species, the transfer of agronomically important genes from wild species has been possible through chromosomal manipulations. Haploids have been useful in the production of homozygous lines. Induced polyploids find direct use in crops in which the seed is not the economic produce. As...

Enlace original: https://cgspace.cgiar.org/handle/10568/103279

Investigación en Agricultura
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Bai, K.V. ,  Hahn, S.K. ,  [Cytogenetics and crop improvement] ,  Cytogenetics and crop improvement
Conference Paper 1992

Autor: Asiedu, Robert Hahn, S.K. Bai, K.V. Dixon, Alfred G.O.
Enlace original: https://cgspace.cgiar.org/handle/10568/103291

Investigación en Agricultura
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Asiedu, Robert ,  Hahn, S.K. ,  Bai, K.V. ,  Dixon, Alfred G.O. ,  [Introgression of genes from wild relatives into cassava] ,  Introgression of genes from wild relatives into cassava
Conference Proceedings 2008

Autor: Dixon, A. Okechukwu, R.U. Ssemakula, G.N. Hanna, R. Thresh, J.M. Hughes, J. Ingelbrecht, I. Fregene, Martin A. Legg, J.P. Mahungu, N.M. Nweke, F. Ntawuruhunga, Pheneas Fauquet, Claude M. Manyong, Victor M. Neuenschwander, P. Whyte, J. Wydra, K. Asiedu, Robert Egesi, Chiedozie N. Bandyopadhyay, Ranajit Winter, S. Tarawali, G. Bokanga, M. Ezedinma, C. Sanni, L.O. Ferguson, M. Ogbe, F.O. Akoroda, M.O. Maziya-Dixon, B.B. Ilona, P. Ekanayake, I.J. Ariyo, O. Onyeka, J. Otim-Nape, G.W. Dahniya, Mohamed T. Ortiz, R. Hahn, S.K. Hartman, P.

Cassava is well recognized for its capacity to address food needs of vulnerable communities in unstable environments in SSA. IITA and colleagues in African NARS, in collaboration with CIAT and ARIs have played leading roles in the development of improved cassava varieties which are disease and pe...

Enlace original: https://cgspace.cgiar.org/handle/10568/92293

Investigación en Agricultura
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Dixon, A. ,  Okechukwu, R.U. ,  Ssemakula, G.N. ,  Hanna, R. ,  Thresh, J.M. ,  Hughes, J. ,  Ingelbrecht, I. ,  Fregene, Martin A. ,  Legg, J.P. ,  Mahungu, N.M. ,  Nweke, F. ,  Ntawuruhunga, Pheneas ,  Fauquet, Claude M. ,  Manyong, Victor M. ,  Neuenschwander, P. ,  Whyte, J. ,  Wydra, K. ,  Asiedu, Robert ,  Egesi, Chiedozie N. ,  Bandyopadhyay, Ranajit ,  Winter, S. ,  Tarawali, G. ,  Bokanga, M. ,  Ezedinma, C. ,  Sanni, L.O. ,  Ferguson, M. ,  Ogbe, F.O. ,  Akoroda, M.O. ,  Maziya-Dixon, B.B. ,  Ilona, P. ,  Ekanayake, I.J. ,  Ariyo, O. ,  Onyeka, J. ,  Otim-Nape, G.W. ,  Dahniya, Mohamed T. ,  Ortiz, R. ,  Hahn, S.K. ,  Hartman, P. ,  [Cassava improvement in sub-Saharan Africa: contributions of IITA and its partners] ,  Cassava improvement in sub-Saharan Africa: contributions of IITA and its partners

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