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Journal Article 2002

Autor: Nurminiemi, M. Madsen, S. Rognli, O. Bjornstad, A. Ortiz, R.

Variation in agronomic and quality characteristics was investigated in 220 Nordic spring barley cultivars across distinct environments (6 locations during 3 years) in the Nordic Region of Europe. The objectives of this research were to determine the importance of the genotype by environment inter...

Enlace original: https://cgspace.cgiar.org/handle/10568/92738

Investigación en Agricultura
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Nurminiemi, M. ,  Madsen, S. ,  Rognli, O. ,  Bjornstad, A. ,  Ortiz, R. ,  [Analysis of the genotypebyenvironment interaction of spring barley tested in the Nordic Region of Europe: relationships among stability statistics for grain yield] ,  Analysis of the genotypebyenvironment interaction of spring barley tested in the Nordic Region of Europe: relationships among stability statistics for grain yield
Journal Article 2002

Autor: Ortiz, R. Nurminiemi, M. Madsen, S. Rognli, O. Bjornstad, A.

A phenotypic diversity index (PDI) was calculated using 10 agronomic characteristics recorded in 90 accessions of 2-row spring barleys and 29accessions of 6-row spring barleys grown in the Nordic Region. The PDI ranged from 0.0308 to 0.6245 in 2-row barley accessions and from0.0314 to 0.7016 in 6...

Enlace original: https://cgspace.cgiar.org/handle/10568/92737

Investigación en Agricultura
FST
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Ortiz, R. ,  Nurminiemi, M. ,  Madsen, S. ,  Rognli, O. ,  Bjornstad, A. ,  [Cultivar diversity in nordic spring barley breeding (1930-1991)] ,  Cultivar diversity in nordic spring barley breeding (1930-1991)
Journal Article 2002

Autor: Upadhyaya, H. Bramel-Cox, P.J. Ortiz, R. Singh, S.

Peanut (Arachis hypogaea L.) breeding programs with a goal of rapid cultivar development have used mainly elite breeding lines and cultivars, which has resulted in the development of breeding materials with a narrow genetic base. Utilization of exotic germplasm resources in breeding programs is n...

Enlace original: https://cgspace.cgiar.org/handle/10568/92742

Investigación en Agricultura
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Upadhyaya, H. ,  Bramel-Cox, P.J. ,  Ortiz, R. ,  Singh, S. ,  [Developing a mini core of peanut for utilization of genetic resources] ,  Developing a mini core of peanut for utilization of genetic resources
Journal Article 2002

Autor: Ortiz, R. Vries, J. de Toenniessen, G.
Enlace original: https://cgspace.cgiar.org/handle/10568/92741

Investigación en Agricultura
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Ortiz, R. ,  Vries, J. de ,  Toenniessen, G. ,  [Securing the harvest: biotechnology, breeding, and seed systems for African crops] ,  Securing the harvest: biotechnology, breeding, and seed systems for African crops
Journal Article 2018

Autor: Batte, M. Mukiibi, A. Swennen, R.L. Uwimana, B. Pocasangre, L. Hovmalm, H.P. Geleta, M. Ortiz, R.

Morphological traits are commonly used for characterizing plant genetic resources. Germplasm characterization should be based on distinctly identifiable, stable and heritable traits that are expressed consistently and are easy to distinguish by the human eye. Characterization and documentation of...

Enlace original: https://cgspace.cgiar.org/handle/10568/89020

Investigación en Agricultura
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Batte, M. ,  Mukiibi, A. ,  Swennen, R.L. ,  Uwimana, B. ,  Pocasangre, L. ,  Hovmalm, H.P. ,  Geleta, M. ,  Ortiz, R. ,  [Suitability of existing Musa morphological descriptors to characterize East African highland ‘matooke’ bananas] ,  Suitability of existing Musa morphological descriptors to characterize East African highland ‘matooke’ bananas
Journal Article 1997

Autor: Ortiz, R. Langie, H.

Plantains (Musa spp., AAB group) are an important food crop in the humid lowlands of sub-Saharan Africa. Understanding the relationships between growth characteristics and yield potential (t ha-1 yr-1) would be useful in developing an ideotype to guide breeding efforts for this crop. We investiga...

Enlace original: https://cgspace.cgiar.org/handle/10568/95940

Investigación en Agricultura
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Ortiz, R. ,  Langie, H. ,  [Path analysis and ideotypes for plantain breeding] ,  Path analysis and ideotypes for plantain breeding
Journal Article 1998

Autor: Ortiz, R.

There is a genuine need within a plantain and banana (Musa spp.) breeding program to assess thoroughly the experimental materials through a sequence of trials. This will result in the selection of promising clones as potential new cultivars in the targeted agroecozone. Stability analyses and the ...

Enlace original: https://cgspace.cgiar.org/handle/10568/95946

Investigación en Agricultura
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Ortiz, R. ,  [AMMI and stability analyses of bunch mass in multilocational testing of Musa germplasm in sub-Saharan Africa] ,  AMMI and stability analyses of bunch mass in multilocational testing of Musa germplasm in sub-Saharan Africa
Journal Article 1998

Autor: Craenen, K. Ortiz, R.

Plantain and banana (Musa spp.) are important staple food crops in the humid forest and mid-altitude agro-ecologies of sub-Saharan Africa. Black Sigatoka, caused by Mycosphaerella fijiensis, is an airborne fungal disease which attacks the leaves of the Musa plant. It is commonly considered the ma...

Enlace original: https://cgspace.cgiar.org/handle/10568/95941

Investigación en Agricultura
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Craenen, K. ,  Ortiz, R. ,  [Influence of black sigatoka disease on the growth and yield of diploid and tetraploid hybrid plantains] ,  Influence of black sigatoka disease on the growth and yield of diploid and tetraploid hybrid plantains
Journal Article 1998

Autor: Ortiz, R. Ulburghs, F. Okoro, J.

Current efforts to produce improved genotypes of plantain (Musa spp. AAB genomic group) and banana (Musa spp. AAA genomic group) depend on identifying triploid, female-fertile clones and crossing them with male-fertile, diploid wild or cultivated accessions. Apparent male fertility, as measured b...

Enlace original: https://cgspace.cgiar.org/handle/10568/95943

Investigación en Agricultura
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Ortiz, R. ,  Ulburghs, F. ,  Okoro, J. ,  [Seasonal variation of apparent male fertility and 2n pollen production in plantain and banana] ,  Seasonal variation of apparent male fertility and 2n pollen production in plantain and banana
Journal Article 1998

Autor: Nokoe, S. Ortiz, R.

Bananas (Musa spp. AAA group) are an important food and a source of income for farmers in tropical countries. Black sigatoka (Mycosphaerella fijiensis Morelet), a fungal leaf spot disease, is the major production constraint worldwide. The replacement of most of the susceptible banana landraces re...

Enlace original: https://cgspace.cgiar.org/handle/10568/95942

Investigación en Agricultura
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Nokoe, S. ,  Ortiz, R. ,  [Optimum plot size for banana trials] ,  Optimum plot size for banana trials

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