Identification of new sources of resistance to RHBV- rice hoja blanca virus

With the aim to find new sources of resistance to rice hoja blanca (white leaf) disease, transmitted by the insect Tagosodes orizicolus, 660 genotypes were evaluated under greenhouse and field conditions. Seven resistant genotypes were identified, and genomic studies were performed to demonstrate that the resistance in these sources is genetically different from that of Fedearroz 2000, which is currently the variety with the most resistance to hoja blanca. These new resistance sources constitute a resource that can be used to sustainably extend hoja blanca disease management throughout all of the rice-growing regions of tropical America. This is the first report of hoja blanca resistance in indica rice and different from that of Fedearroz 2000.

• Autores: Cruz-Gallego, Maribel; Rebolledo, Maria Camila; Cuasquer, Juan B.; Cruz-Galvis, Daniel Felipe; Peña-Fernández, Alexandra Lorena; Quintero, Constanza; Silva-Córdoba, Elkin Alexander; Álvarez-V, María Fernanda; Jojoa-Cruz, Sebastián; Lorieux, Mathias; Stuart, Jeffrey J; Correa-Victoria, Fernando José
• Tipo de recurso: Article of journal
• Fecha de publicación: 2018
• Institución: Universidad Nacional de Colombia
• Repositorio: Universidad Nacional de Colombia
• Idioma: spa
• OAI Identifier: oai:repositorio.unal.edu.co:unal/68096
• Acceso en línea: https://repositorio.unal.edu.co/handle/unal/68096; http://bdigital.unal.edu.co/69129/
• Palabra clave: 55 Ciencias de la tierra / Earth sciences and geology; 63 Agricultura y tecnologías relacionadas / Agriculture; Oryza sativa L.; phenotyping; plant-virus-vector pathosystem; Sogata; Tagosodes; Tenuivirus; Fenotipado; Oryza sativa L.; patosistema planta-virus-vector; Sogata; Tagosodes; Tenuivirus
• Rights: openAccess
• License: Atribución-NoComercial 4.0 Internacional