Now showing items 1-6 of 6

    • Bemisia tabaci Biotype Q is present in Costa Rica 

      Guevara Coto, José Andrés; Barboza Vargas, Natalia; Hernández Jiménez, Eduardo José; Hammond, Rosemarie W.; Ramírez Fonseca, Pilar (2011)
      Whiteflies are an insect group that comprises multiple species and biotypes, capable of affecting crops by phloem feeding, virus transmission and promotion of fungal colonization. The distribution of these pests is worldwide. ...
    • Comparative Analysis of Three Different Total Nucleic Acid Extraction Protocols for the Diagnosis of Geminiviruses in Squash (Cucurbita moschata) 

      Mora Umaña, Floribeth; Hernández Jiménez, Eduardo José; Albertazzi Castro, Federico José; Karkashian Córdoba, James; Ramírez Fonseca, Pilar (2012)
      Squash (Cucurbita moschata) is one of the most important crops in tropical countries. Geminiviruses are an important group of plant pathogens. In 2002 a new begomovirus was reported to naturally infect squash and some other ...
    • Effect of Gamma Irradiation and Selection with Fungus Filtrate (Rhizoctonia solani Kuhn) on the in Vitro Culture of Common Bean (Phaseolus vulgaris) 

      Solís Ramos, Laura Yesenia; Valdez Melara, Marta; Alvarado Barrantes, Ricardo; Mora Umaña, Floribeth; Hernández Jiménez, Eduardo José; Barboza Vargas, Natalia; Ramírez Fonseca, Pilar (2015)
      The present investigation was undertaken to study the effect of gamma irradiation (dose from 10 to 100 Gy) and in vitro selection with fungus filtrate as selecting agent (concentration from 20% to 100%) on the susceptibility ...
    • First Report of Tomato chlorosis virus Infecting Sweet Pepper in Costa Rica 

      Vargas Zamora, José A.; Hernández Jiménez, Eduardo José; Barboza Vargas, Natalia; Mora Umaña, Floribeth; Ramírez Fonseca, Pilar; Hammond, Rosemarie W. (2011-11)
      In September 2008, a survey of whiteflies and whitefly-borne viruses was performed in 11 pepper-growing greenhouses in the province of Cartago, Costa Rica. During this survey, the vast majority of sweet pepper (Capsicum ...
    • Molecular characterization and genetic diversity of Jatropha curcas L. in Costa Rica 

      Vásquez Mayorga, Marcela; Fuchs Castillo, Eric J.; Hernández Jiménez, Eduardo José; Herrera Murillo, Franklin; Hernández López, Jesús; Moreira González, Ileana; Arnáez Serrano, Elizabeth; Barboza Vargas, Natalia María (2017-02-09)
      We estimated the genetic diversity of 50 Jatropha curcas samples from the Costa Rican germplasm bank using 18 EST-SSR, one G-SSR and nrDNA-ITS markers. We also evaluated the phylogenetic relationships among samples using ...
    • Newly Discovered Natural Hosts of Tomato chlorosis virus in Costa Rica 

      Barboza Vargas, Natalia; Hernández Jiménez, Eduardo José; Mora Umaña, Floribeth; Ramírez Fonseca, Pilar; Hammond, Rosemarie W.; Solórzano Morales, Antony (2011-04)
      Tomato chlorosis virus (ToCV) is an emerging whitefly-transmitted crinivirus. In Costa Rica in 2007, ToCV was detected in field-grown and greenhouse tomato (Solanum lycopersicum L.) plants causing symptoms of severe yellowing ...