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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...


Benscher, DPappu, SSNiblett, CLVaron de Agudelo, F.Morales, Francisco JoséHodson de Jaramillo, EÁlvarez, 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

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 ...


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

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...


Mejía, Juan FernandoContaldo, N.Paltrinieri, SPardo, Juan ManuelRios, CAÁlvarez, 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

Ospina Patiño, BernardoCeballos, H.Álvarez, E.Bellotti, Anthony C.Calvert, Lee A.Arias, V.B.Cadavid López, Luis FernandoPineda López, BenjamínLlano Rodríguez, Germán AlbertoCuervo Ibáñez, Maritza[La yuca en el tercer milenio: sistemas modernos de producción, procesamiento, utilización y comercialización]La yuca en el tercer milenio: sistemas modernos de producción, procesamiento, utilización y comercialización

Álvarez, E.Pantoja AGanan, LCeballos, Germán[Estado del arte y opciones de manejo del Moko y la Sigatoka negra en América Latina y el Caribe]Estado del arte y opciones de manejo del Moko y la Sigatoka negra en América Latina y el Caribe

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...


Oliveira, SASAbreu, EFMAraújo, TSOliveira, EJAndrade, ECGarcía, 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

Álvarez, E.Llano Rodríguez, Germán Alberto[Enfermedades del cultivo de la yuca y métodos de control]Enfermedades del cultivo de la yuca y métodos de control

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...


Hurtado Lopez, PXÁlvarez, E.Llano Rodríguez, Germán AlbertoFregene, 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
Álvarez, E.Llano Rodríguez, Germán AlbertoLoke, John BernardRestrepo, JAMora, JR[Investigación participativa para el control de pudriciones de yuca en comunidades indígenas de Mitú, Colombia]Investigación participativa para el control de pudriciones de yuca en comunidades indígenas de Mitú, Colombia
Álvarez, E.Latorre Gonzalez, MAMiles, 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

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