Listar Investigación por autor "Hammond, Rosemarie W."

Mostrando ítems 1-5 de 5

    • Bemisia tabaci Biotype Q is present in Costa Rica 

      Guevara Coto, José Andrés; Barboza Vargas, Natalia María; 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. ...

    • Detección de crinivirus y begomovirus en plántulas de tomate y arvenses asociadas a semilleros 

      Solórzano Morales, Antony; Castro Vásquez, Ruth Mayela; Barboza Vargas, Natalia María; Hernández Jiménez, Eduardo José; Hammond, Rosemarie W.; Ramírez Fonseca, Pilar (2017)
      El objetivo de este trabajo fue detectar infecciones causadas por el Tomato chlorosis virus (ToCV) y begomovirus en plántulas de tomate, y en las arvenses de los alrededores de los invernaderos. En el período de un año, a ...

    • First Report of Potato Spindle Tuber Viroid in Costa Rica 

      Badilla Porras, Ramsés; Hammond, Rosemarie W.; Rivera Herrero, Carmen (1999-11)
      During 1997 to 1998, symptoms of leaf roll, dwarfism, chlorosis, and occasional leaf necrosis were observed on Solanum tuberosum in several plots in Cartago, the principal potato-production region of Costa Rica. Because ...

    • First Report of Tomato chlorosis virus Infecting Sweet Pepper in Costa Rica 

      Vargas Zamora, José A.; Hernández Jiménez, Eduardo José; Barboza Vargas, Natalia María; 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 ...

    • Newly Discovered Natural Hosts of Tomato chlorosis virus in Costa Rica 

      Barboza Vargas, Natalia María; 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 ...