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Journal Article 1993

Autor: Vuylsteke, D.R. Ortiz, R. Pasberg-Gauhl, C. Gauhl, F. Gold, C. Ferris, S. Speijer, P.
Enlace original: https://cgspace.cgiar.org/handle/10568/97354

Investigación en Agricultura
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Vuylsteke, D.R. ,  Ortiz, R. ,  Pasberg-Gauhl, C. ,  Gauhl, F. ,  Gold, C. ,  Ferris, S. ,  Speijer, P. ,  [Plantain and banana research at the International Institute of Tropical Agriculture] ,  Plantain and banana research at the International Institute of Tropical Agriculture
Journal Article 1996

Autor: Ortiz, R.

Virus-like symptoms (due to banana streak virus, cucumber mosaic virus, or both) have been observed in plants of Musa hybrids (TMPx) and local landraces included in multilocational trials in sub-Saharan Africa. Virus-like symptom incidence in these multilocational trials was analyzed using the ad...

Enlace original: https://cgspace.cgiar.org/handle/10568/97339

Investigación en Agricultura
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Ortiz, R. ,  [The potential of AMMI analysis for field assessment of Musa genotypes to virus infection] ,  The potential of AMMI analysis for field assessment of Musa genotypes to virus infection
Journal Article 1994

Autor: Ortiz, R. Peloquin, S.

Quantitative variation for pollen stainability was examined in both tetraploid × diploid and tetraploid × tetraploid families of potato (Solanum tuberosum L.). The diploid parents, which were highly heterozygous, produced first division restitution (FDR) 2n pollen. The families used were not affe...

Enlace original: https://cgspace.cgiar.org/handle/10568/97373

Investigación en Agricultura
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Ortiz, R. ,  Peloquin, S. ,  [Effect of sporophytic heterozygosity on the male gametophyte of the tetraploid potato (Solanum tuberosum)] ,  Effect of sporophytic heterozygosity on the male gametophyte of the tetraploid potato (Solanum tuberosum)
Journal Article 1993

Autor: Vuylsteke, D.R. Ortiz, R. Ferris, S.

Plantain and banana (Musa spp.) are integral components of the farming systems in the humid forest and mid-altitude ecologies of sub-saharan Africa. They provide more than 25% of the carbohydrates for approximately 70 million people in the region. Major constraints to plantain and banana producti...

Enlace original: https://cgspace.cgiar.org/handle/10568/97361

Investigación en Agricultura
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Vuylsteke, D.R. ,  Ortiz, R. ,  Ferris, S. ,  [Genetic and agronomic improvement for sustainable production of plantain and banana in subSaharan Africa] ,  Genetic and agronomic improvement for sustainable production of plantain and banana in subSaharan Africa
Journal Article 2006

Autor: Dochez, C. Dusabe, J. Whyte, J. Tenkouano, A. Ortiz, R. Waele, D. de

The burrowing nematode, Radopholus similis, is a serious threat to sustainable banana production worldwide. A promising method for nematode control is the development and deployment of nematode-resistant banana cultivars. This requires the identification of sources of resistance, which can then b...

Enlace original: https://cgspace.cgiar.org/handle/10568/91358

Investigación en Agricultura
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Dochez, C. ,  Dusabe, J. ,  Whyte, J. ,  Tenkouano, A. ,  Ortiz, R. ,  Waele, D. de ,  [New sources of resistance to Radopholus similis in Musa germplasm from Asia] ,  New sources of resistance to Radopholus similis in Musa germplasm from Asia
Journal Article 2003

Autor: Golmirzaie, A.M. Tenorio, J. Serquen, F. Ortiz, R.

Potato cybrids result from the fusion between cytoplasm and nuclear gene donors. Such genetic materials are an alternative means to broaden the breeding pool by non‐sexual gene transfer. Tetrad pollen sterility provides also another source of male sterility with some potential for true potato see...

Enlace original: https://cgspace.cgiar.org/handle/10568/98066

Investigación en Agricultura
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Golmirzaie, A.M. ,  Tenorio, J. ,  Serquen, F. ,  Ortiz, R. ,  [Cybrids and tetrad sterility for developing true potato seed hybrids] ,  Cybrids and tetrad sterility for developing true potato seed hybrids
Journal Article 2007

Autor: Mahalakshmi, V. Ng, Q. Atalobhor, J. Ogunsola, D. Lawson, M. Ortiz, R.

Yams (Dioscorea spp.) are important crops in some West African locations. The West African yam collections held at the IITA were characterized using the standard descriptor list for this crop (IPGRI/IITA. 1997. Descriptors for yam (Dioscorea spp.). International Institute of Tropical Agriculture,...

Enlace original: https://cgspace.cgiar.org/handle/10568/91461

Investigación en Agricultura
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Mahalakshmi, V. ,  Ng, Q. ,  Atalobhor, J. ,  Ogunsola, D. ,  Lawson, M. ,  Ortiz, R. ,  [Development of a West African yam Dioscorea spp. core collection] ,  Development of a West African yam Dioscorea spp. core collection
Journal Article 1999

Autor: Ferris, R.S.B. Ortiz, R. Vuylsteke, D.R.

Triploid plantains (Musa AAB) are among the most important horticultural crops of West Africa. However, all landraces are susceptible to black Sigatoka, a fungal disease caused by Mycosphaerella fijiensis, Morelet. To ameliorate the spread of this epidemic, exotic triploid cooking bananas (ABB), ...

Enlace original: https://cgspace.cgiar.org/handle/10568/98054

Investigación en Agricultura
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Ferris, R.S.B. ,  Ortiz, R. ,  Vuylsteke, D.R. ,  [Fruit quality evaluation of plantains, plantain hybrids, and cooking bananas] ,  Fruit quality evaluation of plantains, plantain hybrids, and cooking bananas
Journal Article 2003

Autor: Ortiz, R. Golmirzaie, A.M.

The aim of this research was to determine the genetic variation available in some important characteristics for true potato seed breeding in intermediate and advanced stages of a breeding population developed by the Centro Internacional de la Papa. A factorial mating design was used to calculate ...

Enlace original: https://cgspace.cgiar.org/handle/10568/97986

Investigación en Agricultura
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Ortiz, R. ,  Golmirzaie, A.M. ,  [Genetic parameters for agronomic characteristics: II: intermediate and advanced stages in a Open Access potato seed breeding population] ,  Genetic parameters for agronomic characteristics: II: intermediate and advanced stages in a Open Access potato seed breeding population
Journal Article 2003

Autor: Ortiz, R. Golmirzaie, A.M.

The original variation in the source population as well as the selection method may influence the genetic variation in further cycles of genetic improvement. Therefore, the objectives of this research were to determine genetic parameters (variance components and heritability) in source and interm...

Enlace original: https://cgspace.cgiar.org/handle/10568/97985

Investigación en Agricultura
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Ortiz, R. ,  Golmirzaie, A.M. ,  [Genetic parameters for agronomic characteristics: 1: early and intermediate breeding populations of Open Access potato seed] ,  Genetic parameters for agronomic characteristics: 1: early and intermediate breeding populations of Open Access potato seed

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