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dc.contributor.advisorBrunner, Bryan
dc.contributor.authorRivera-Rodríguez, Denisse
dc.date.accessioned2018-11-14T13:18:24Z
dc.date.available2018-11-14T13:18:24Z
dc.date.issued2015
dc.identifier.urihttps://hdl.handle.net/20.500.11801/1212
dc.description.abstractStarfruit is an exotic fruit with great nutritional, medicinal and economic benefits. Reports suggest that pests and diseases reduce the quality and yield of this crop. In Puerto Rico, there is an interest to increase production as the possibility of exporting the fruit to subtropical and temperate countries has been recognized. In order to identify potential pathogens that damage starfruit, samples were collected at the Tropical Agriculture Research Station farm (TARS) located in Isabela and the Corozal Experimental Substation. Three samples were collected (starfruit with disease symptoms) for each of the nine varieties following a pattern of stratified sampling in rows. The collected fruits were placed individually in plastic bags. The samples were processed and analyzed in the laboratory of BNF at Alzamora College Farm. The collected tissue surface was disinfected with a solution of sodium hypochlorite at 10%, 70% ethyl alcohol and rinsed with sterile distilled water for one minute. Disinfected tissue was transferred to Petri dishes that contained potato agar and dextrose, acidulated with lactic acid at 25%. In addition, moist chambers and observations under a microscope were done to identify the causative agent of the symptom. The fungal isolates were identified as; Fusarium sp., Trichoderma sp., Curvularia sp., Nigrospora sp.,Pestalotia sp., and Colletotrichum sp. Pathogenicity tests in vitro showed that the isolates of Fusarium, Pestalotia, Colletotrichum,and Nigrospora (detected only in ʻKariʼat Isabela) were pathogenic to fruit.
dc.description.abstractLa carambola es una fruta introducida en Puerto Rico que posee grandes beneficios nutricionales, medicinales y económicos. Los reportes apuntan a que las plagas y las enfermedades reducen la calidad y el rendimiento al cultivo en Puerto Rico. Existe cierto interés en promover el cultivo y producción de la carambola en la Isla debido a que se ha reconocido la posibilidad de exportar la fruta hacia países subtropicales y de zonas templadas. Con el objetivo de identificar los posibles patógenos que afectan el fruto, se realizó un muestreo en siembras de carambola en la Subestación Experimental de Agricultura Tropical (TARS, por sus siglas en inglés) localizada en el municipio de Isabela y en la Subestación Experimental Agrícola en Corozal. Se colectaron tres muestras (frutos de carambola con síntomas) de cada una de las nueve variedades sembradas en cada localidad siguiendo un patrón de muestreo de forma estratificada en surcos. Los frutos colectados se colocaron individualmente en fundas plásticas. Las muestras se procesaron y se analizaron en el antiguo laboratorio de “Biological Nitrogen Fixation” en la Finca Alzamora del Recinto Universitario de Mayagüez. El tejido recolectado se desinfectó superficialmente con una solución de hipoclorito de sodio al 10%, alcohol etílico al 70% y se enjuagó con agua destilada estéril por un minuto. El tejido desinfectado se transfirió a platos Petri con agar de papa y dextrosa acidulado con ácido láctico al 25%. Además, se realizaron cámaras húmedas y observaciones en el microscopio para identificar el agente causal del síntoma. Los hongos aislados fueron identificados como; Fusariumsp.,Trichoderma sp.,Curvularia sp.,Nigrospora sp., Pestalotia sp. y Colletotrichum sp Pruebas de patogenicidad in vitro demostraron que los aislados de Fusarium, Pestalotia, Colletotrichum y Nigrospora (detectado sólo en la variedad ʻKariʼ en Isabela) resultaron patógenicos a la fruta.
dc.language.isoesen_US
dc.subjectCarambolaen_US
dc.subjectFusariumen_US
dc.subjectNigrosporaen_US
dc.subjectTrichodermaen_US
dc.subjectPestalotiaen_US
dc.subjectCurvulariaen_US
dc.subjectColletotrichumen_US
dc.titleHongos de la carambola (Averrhoa carambola L.) en Puerto Ricoen_US
dc.typeThesisen_US
dc.rights.licenseAll rights reserveden_US
dc.rights.holder(c) 2015 Denisse Rivera Rodríguezen_US
dc.contributor.committeeAlmodóvar, Wanda
dc.contributor.committeeVargas Ayala, Roberto
dc.contributor.committeeRóman Paoli, Elvin
dc.contributor.representativeAcosta, Jaime
thesis.degree.levelM.A.en_US
thesis.degree.disciplineCrop Protectionen_US
dc.contributor.collegeCollege of Agricultural Sciencesen_US
dc.contributor.departmentDepartment of Crops and Agro-Environmental Sciencesen_US
dc.description.graduationSemesterFallen_US
dc.description.graduationYear2015en_US


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