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Journal Article 1996

Autor: Benscher, D Pappu, SS Niblett, CL Varon de Agudelo, F. Morales, Francisco José Hodson de Jaramillo, E Álvarez, E. Acosta, O.

Viruses causing severe mosaic, epinasty, defoliation, and premature death of Passiflora spp. were isolated from west central Colombia. Western blot analyses indicated the presence of potyviruses. Two Colombian isolates (COL-22 and -GR) were compared to known potyviruses as to host range, symptoma...

Enlace original: https://cgspace.cgiar.org/handle/10568/42539

Investigación en Agricultura
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Benscher, D ,  Pappu, SS ,  Niblett, CL ,  Varon de Agudelo, F. ,  Morales, Francisco José ,  Hodson de Jaramillo, E ,  Álvarez, E. ,  Acosta, O. ,  [A strain of soybean mosaic virus infecting Passiflora spp. in Colombia] ,  A strain of soybean mosaic virus infecting Passiflora spp. in Colombia
Journal Article 2003

Autor: Álvarez, E. Mejía De Los Rios, J.F. Valle, T.L.

Isolates of Sphaceloma manihoticola, the asexual stage of Elsinoe brasiliensis, were collected from several regions of south-central Brazil. The isolates were obtained from samples of leaves, stems, and petioles of cassava (Manihot esculenta) and the weedy Euphorbia heterophylla ( amendoim bravo ...

Enlace original: https://cgspace.cgiar.org/handle/10568/43865

Investigación en Agricultura
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Álvarez, E. ,  Mejía De Los Rios, J.F. ,  Valle, T.L. ,  [Molecular and pathogenicity characterization of Sphaceloma manihoticola isolates from South-Central Brazil] ,  Molecular and pathogenicity characterization of Sphaceloma manihoticola isolates from South-Central Brazil
Journal Article 2011

Autor: Mejía, Juan Fernando Contaldo, N. Paltrinieri, S Pardo, Juan Manuel Rios, CA Álvarez, E. Bertaccini, A

A severe disease was observed in the potato variety Criolla Colombiana . Main symptomatology consisted of discoloration or yellowing of the whole plant, apical leafroll, dwarfing, axillary buds and thicker internodes. Phytoplasmas related to 16SrV and 16SrXII groups were identified by nested PCR...

Enlace original: https://cgspace.cgiar.org/handle/10568/43872

Investigación en Agricultura
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Mejía, Juan Fernando ,  Contaldo, N. ,  Paltrinieri, S ,  Pardo, Juan Manuel ,  Rios, CA ,  Álvarez, E. ,  Bertaccini, A ,  [Molecular detection and identification of group 16SrV and 16SrXII phytoplasma associated with potatoes in Colombia] ,  Molecular detection and identification of group 16SrV and 16SrXII phytoplasma associated with potatoes in Colombia
Journal Article 2014-01-15

Autor: Oliveira, SAS Abreu, EFM Araújo, TS Oliveira, EJ Andrade, EC García, J.M.P. Álvarez, E.

Cassava (Manihot esculenta Crantz) is a major staple crop in developing countries and a large source of raw material for industrial purposes as flour, starch, and ethanol. In July 2012, 24 cassava genotypes (corresponding to 1.85% of the accessions) with typical symptoms of frogskin disease (CFSD...

Enlace original: https://cgspace.cgiar.org/handle/10568/42157

Investigación en Agricultura
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Oliveira, SAS ,  Abreu, EFM ,  Araújo, TS ,  Oliveira, EJ ,  Andrade, EC ,  García, J.M.P. ,  Álvarez, E. ,  [First report of a 16SrIII-L phytoplasma associated with frogskin disease in cassava (Manihot esculenta Crantz) in Brazil] ,  First report of a 16SrIII-L phytoplasma associated with frogskin disease in cassava (Manihot esculenta Crantz) in Brazil
Journal Article 2004

Autor: Hurtado Lopez, PX Álvarez, E. Llano Rodríguez, Germán Alberto Fregene, Martin A.

Una de las principales estrategias para el manejo del Añublo Bacterial de la Yuca (CBB), causado por Xanthomonas axonopodis pv. manihotis es el uso de resistencia varietal, que implica desarrollar variedades de yuca con resistencia genética duradera. Para tal fin, es necesario conocer los genes q...

Enlace original: https://cgspace.cgiar.org/handle/10568/44273

Investigación en Agricultura
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Hurtado Lopez, PX ,  Álvarez, E. ,  Llano Rodríguez, Germán Alberto ,  Fregene, Martin A. ,  [Detección de marcadores microsatélites asociados con la resistencia al añublo bacterial de la yuca (Manihot esculenta Crantz) en Colombia] ,  Detección de marcadores microsatélites asociados con la resistencia al añublo bacterial de la yuca (Manihot esculenta Crantz) en Colombia
Journal Article 2013

Autor: Álvarez, E. Latorre Gonzalez, MA Miles, John W. Sotelo, G. Bonilla, Ximena P.
Enlace original: https://cgspace.cgiar.org/handle/10568/51406

Investigación en Agricultura
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Álvarez, E. ,  Latorre Gonzalez, MA ,  Miles, John W. ,  Sotelo, G. ,  Bonilla, Ximena P. ,  [Diversity of Rhizoctonia spp. causing foliar blight on Brachiaria in Colombia and evaluation of Brachiaria genotypes for foliar blight resistance] ,  Diversity of Rhizoctonia spp. causing foliar blight on Brachiaria in Colombia and evaluation of Brachiaria genotypes for foliar blight resistance
Journal Article 1990

Autor: Zeigler, Robert S. Álvarez, E.

Ninety-five strains of fluorescent (presumed to be Pseudomonas spp.) and nonfluorescent pathogens of rice causing grain and sheath rot, dirty panicle, and manchado de grano, and 21 strains of nonpathogenic fluorescent pseudomonads isolated from rice grain and sheaths from 22 countries were compar...

Enlace original: https://cgspace.cgiar.org/handle/10568/43254

Investigación en Agricultura
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Zeigler, Robert S. ,  Álvarez, E. ,  [Characteristics of Pseudomonas spp. causing grain discoloration and sheath rot of rice, and associated pseudomonas epiphytes] ,  Characteristics of Pseudomonas spp. causing grain discoloration and sheath rot of rice, and associated pseudomonas epiphytes
Journal Article 2007

Autor: Álvarez, E. Mejía, Juan Fernando Llano Rodríguez, Germán Alberto Loke, John Bernard

Cassava is one of the main carbohydrate sources in the tropics, and it has worldwide importance as basic food for millions of persons in America and Africa. This root crop is affected by cassava frog skin disease that in Colombia produces yield losses of almost 90%. A phytoplasma was associated w...

Enlace original: https://cgspace.cgiar.org/handle/10568/43321

Investigación en Agricultura
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Álvarez, E. ,  Mejía, Juan Fernando ,  Llano Rodríguez, Germán Alberto ,  Loke, John Bernard ,  [Detection and characterization of a phytoplasma associated with frog skin disease in cassava] ,  Detection and characterization of a phytoplasma associated with frog skin disease in cassava
Journal Article 2004

Autor: Álvarez, E. Llano Rodríguez, Germán Alberto Loke, John Bernard Mejía De Los Rios, J.F.

The application of biotechnology tools has made it possible to make significant advances in the detection of pathogens and in the study of the genetic variability of pathogen populations. As a result, adequate disease management strategies can be planned, and disease resistance markers for plants...

Enlace original: https://cgspace.cgiar.org/handle/10568/43192

Investigación en Agricultura
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Álvarez, E. ,  Llano Rodríguez, Germán Alberto ,  Loke, John Bernard ,  Mejía De Los Rios, J.F. ,  [Applying biotechnology tools to improve control diseases of some tropical crops] ,  Applying biotechnology tools to improve control diseases of some tropical crops
Journal Article 1987

Autor: Zeigler, Robert S. Álvarez, E.

Many types of symptoms associated with discolored grain have been observed on rice (Oryza sativa) sheaths, leaves, and grain in Mexico, Guatemala, Panama, Surinam, Colombia, Peru, and Brazil. These include brown necrotic lesions ranging from small specks to large brown to maroon sheath blotches. ...

Enlace original: https://cgspace.cgiar.org/handle/10568/43208

Investigación en Agricultura
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Zeigler, Robert S. ,  Álvarez, E. ,  [Bacterial sheath brown rot of rice caused by Pseudomonas fuscovaginae in Latin America] ,  Bacterial sheath brown rot of rice caused by Pseudomonas fuscovaginae in Latin America

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