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Journal Article 2009

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

Dioscorea alata L. is a highly important crop, widely distributed in the humid and semi-humid tropics. Flow cytometry was used to determine the ploidy levels of 74 D. alata genotypes collected mainly from West African countries. Sixty three of the genotypes were found to be tetraploid, one was he...

Enlace original: https://cgspace.cgiar.org/handle/10568/90196

Investigación en Agricultura
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Obidiegwu, J.E. ,  Rodríguez, E. ,  Ene-Obong, E.E. ,  Loureiro, J. ,  Muoneke, C. ,  Santos, C. ,  Kolesnikova-Allen, M. ,  Asiedu, Robert ,  [Ploidy levels of Dioscorea alata L. germplasm determined by flow cytometry] ,  Ploidy levels of Dioscorea alata L. germplasm determined by flow cytometry
Journal Article 2007

Autor: Efombagn, M.I.B. Nyassé, S. Sounigo, O. Kolesnikova-Allen, M. Eskes, A.B.

As part of a participatory selection programme, promising individual trees were selected in 2004 in cocoa farms of southern and western Cameroon regions for yield and for low incidence of Phytophthora pod rot (Ppr) caused by Phytophthora megakarya. The aim of this study was to compare the levels ...

Enlace original: https://cgspace.cgiar.org/handle/10568/92192

Investigación en Agricultura
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Efombagn, M.I.B. ,  Nyassé, S. ,  Sounigo, O. ,  Kolesnikova-Allen, M. ,  Eskes, A.B. ,  [Participatory cocoa (Theobroma cacao) selection in Cameroon: Phytophthora pod rot resistant accessions identified in farmers fields] ,  Participatory cocoa (Theobroma cacao) selection in Cameroon: Phytophthora pod rot resistant accessions identified in farmers fields
Journal Article 2009

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

The Guinea yams, Dioscorea cayenensis Lam. and D. rotundata Poir. (D. cayenensis–D. rotundata complex), represent a highly importantcrop, widely distributed in the humid and semi-humidtropics. The ploidy levels of 170 accessions of the core set of Guinea yams from West African coun...

Enlace original: https://cgspace.cgiar.org/handle/10568/90195

Investigación en Agricultura
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Obidiegwu, J.E. ,  Loureiro, J. ,  Ene-Obong, E.E. ,  Rodríguez, E. ,  Kolesnikova-Allen, M. ,  Santos, C. ,  Muoneke, C. ,  Asiedu, Robert ,  [Ploidy level studies on the Dioscorea cayenensis/Dioscorea rotundata complex core set] ,  Ploidy level studies on the Dioscorea cayenensis/Dioscorea rotundata complex core set
Journal Article 2009

Autor: Otoo, E. Akromah, R. Kolesnikova-Allen, M. Asiedu, Robert

Yam (Dioscorea spp), a multi-species, polyploid, and vegetatively propagated tuber crop, is cultivated widely in the tropics and subtropics. Over 95% of the world's yam production occurs in West and Central Africa where white yam (Dioscorea rotundata Poir.) is the most important among cultivated ...

Enlace original: https://cgspace.cgiar.org/handle/10568/90212

Investigación en Agricultura
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Otoo, E. ,  Akromah, R. ,  Kolesnikova-Allen, M. ,  Asiedu, Robert ,  [Delineation of pona complex of yam in Ghana using SSR markers] ,  Delineation of pona complex of yam in Ghana using SSR markers
Journal Article 2007

Autor: Opoku, S. Bhattacharjee, R. Kolesnikova-Allen, M. Motamayor, J. Schnell, R. Ingelbrecht, I.L. Enu-Kwesi, L. Adu-Ampomah, Y.

Theobroma cacao L. with its center of diversity in Central and South America was first introduced to West Africa in the mid-19th century and today the region produces 70% of the world's cocoa. Several distinct cocoa types have been introduced, cultivated, and intercrossed across the region. Also,...

Enlace original: https://cgspace.cgiar.org/handle/10568/91482

Investigación en Agricultura
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Opoku, S. ,  Bhattacharjee, R. ,  Kolesnikova-Allen, M. ,  Motamayor, J. ,  Schnell, R. ,  Ingelbrecht, I.L. ,  Enu-Kwesi, L. ,  Adu-Ampomah, Y. ,  [Genetic diversity in cocoa (Theobroma cacao L.) germplasm collection from Ghana] ,  Genetic diversity in cocoa (Theobroma cacao L.) germplasm collection from Ghana
Journal Article 2009

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

The genetic diversity of 219 accessions of Guinea yam germplasm from Benin, Congo, Côte d’ Ivoire,Equatorial Guinea, Gabon, Ghana, Nigeria, Sierra Leone and Togo was accessed using 15 microsatelliteloci. High diversity of 0.677 was found among the accessions. An allelic average of 8.06 andpolymor...

Enlace original: https://cgspace.cgiar.org/handle/10568/91519

Investigación en Agricultura
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Obidiegwu, J.E. ,  Kolesnikova-Allen, M. ,  Ene-Obong, E.E. ,  Muoneke, C.O. ,  Asiedu, Robert ,  [SSR markers reveal diversity in Guinea yam (Dioscorea cayenensis/D. rotundata) core set] ,  SSR markers reveal diversity in Guinea yam (Dioscorea cayenensis/D. rotundata) core set
Journal Article 2009

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
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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 2012

Autor: Hippolyte, I. Jenny, C. Gardes, L. Bakry, F. Rivallan, R. Pomies, V. Cubry, P. Tomekpe, K. Risterucci, A.M. Roux, N. Rouard, M. Arnaud, Elizabeth Kolesnikova-Allen, M. Perrier, X.

The production of triploid banana and plantain (Musa spp.) cultivars with improved characteristics (e.g. greater disease resistance or higher yield), while still preserving the main features of current popular cultivars (e.g. taste and cooking quality), remains a major challenge for Musa breeders...

Enlace original: https://cgspace.cgiar.org/handle/10568/35842

Investigación en Agricultura
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Hippolyte, I. ,  Jenny, C. ,  Gardes, L. ,  Bakry, F. ,  Rivallan, R. ,  Pomies, V. ,  Cubry, P. ,  Tomekpe, K. ,  Risterucci, A.M. ,  Roux, N. ,  Rouard, M. ,  Arnaud, Elizabeth ,  Kolesnikova-Allen, M. ,  Perrier, X. ,  [Foundation characteristics of edible Musa triploids revealed from allelic distribution of SSR markers] ,  Foundation characteristics of edible Musa triploids revealed from allelic distribution of SSR markers
Journal Article 2010-10

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

A collection of 89 water yam (Dioscorea alata L.) accessions from Benin, Congo, Côte d’Ivoire, Equatorial Guinea, Gabon, Ghana, Nigeria, Sierra Leone and Togo was assessed for genetic diversity using thirteen microsatellite loci. These 89 are some of the D. alata accessions conserved by the Inte...

Enlace original: https://cgspace.cgiar.org/handle/10568/90348

Investigación en Agricultura
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Obidiegwu, J.E. ,  Asiedu, Robert ,  Ene-Obong, E.E. ,  Muoneke, C.O. ,  Kolesnikova-Allen, M. ,  [Genetic characterization of some water yam (Dioscorea alata L.) in West Africa with simple sequence repeats] ,  Genetic characterization of some water yam (Dioscorea alata L.) in West Africa with simple sequence repeats

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