Avances en el pre-mejoramiento del arroz: Estrategias de piramidación para mejorar la tolerancia a pyricularia (pyricularia oryzae cav.) Mediante la integración de cinco genes clave

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cg.authorship.typesCGIAR single centreen_US
cg.contributor.affiliationInternational Center for Tropical Agricultureen_US
cg.contributor.donorInternational Center for Tropical Agricultureen_US
cg.contributor.initiativeAccelerated Breedingen_US
cg.coverage.countryColombiaen_US
cg.coverage.iso3166-alpha2COen_US
cg.coverage.regionAmericasen_US
cg.coverage.regionSouth Americaen_US
cg.coverage.regionLatin America and the Caribbeanen_US
cg.creator.identifierMarcela Pineda: 0000-0002-4290-5874en_US
cg.creator.identifierMaria Fernanda Alvarez: 0000-0003-1104-6306en_US
cg.identifier.urlhttps://flar.org/wp-content/uploads/2024/06/031_Premejoramiento-piramidacion_MPineda-scaled.jpgen_US
cg.subject.actionAreaGenetic Innovationen_US
cg.subject.alliancebiovciatRICEen_US
cg.subject.impactAreaNutrition, health and food securityen_US
cg.subject.sdgSDG 2 - Zero hungeren_US
dc.contributor.authorPineda, Marcelaen_US
dc.contributor.authorAgrono, Tomasen_US
dc.contributor.authorQuintero, Constanzaen_US
dc.contributor.authorMorales, Mabelen_US
dc.contributor.authorAlvarez, Maria Fernandaen_US
dc.date.accessioned2025-01-29T09:08:31Zen_US
dc.date.available2025-01-29T09:08:31Zen_US
dc.identifier.urihttps://hdl.handle.net/10568/170301en_US
dc.titleAvances en el pre-mejoramiento del arroz: Estrategias de piramidación para mejorar la tolerancia a pyricularia (pyricularia oryzae cav.) Mediante la integración de cinco genes claveen_US
dcterms.abstractThe fungus Pyricularia oryzae Cav., is the cause of the most important disease in rice cultivation, blast, due to its widespread presence in the world. Consequently, the development of rice plants tolerant to this disease is a key factor to maintain crop yields. By incorporating techniques such as marker-assisted selection (MAS) to screen genes of interest and the production of Double Haploid plants to generate homogeneous populations, we accelerate the development of resistant materials with several blast resistance genes. This study aims to obtain plants carrying five resistance genes to Pyricularia using molecular markers and tissue culture. Three parents were involved which have been identified as carriers of Pyricularia tolerance genes: CIFED 11 A (Pish, Pi2, and Piks-Zh), IRBLt-K59_LTH (Pi-t) and FL13032 (Pish and Pii). Two simple crosses were carried out (CIFED 11 A x IRBLt-K59 and CIFED 11 A x IRBLT-K59) and the F1 plants carrying the genes of each parent involved were selected, subsequently, A double cross was made between the two F1 to obtain a population of 1424 seeds that were planted to confirm the presence of the genes and with the selected plants the anther culture was carried out. In the tissue culture process, calluses were obtained, and plants were regenerated as a result of these. According to the phenotypic evaluation, double haploid plants were identified and evaluated to confirm the presence of the five resistance genes. Seven plants were confirmed as carriers of the genes of interest that present genotypic and phenotypic stability, which can be included in breeding program schemes for the generation of varieties tolerant to Pyricularia.en_US
dcterms.accessRightsOpen Accessen_US
dcterms.bibliographicCitationPineda, M.; Agrono, T.; Quintero, C.; Morales, M.; Alvarez, M.F. (2024) Avances en el pre-mejoramiento del arroz: Estrategias de piramidación para mejorar la tolerancia a pyricularia (pyricularia oryzae cav.) Mediante la integración de cinco genes clave. Presentado en XIV Conferencia Internacional de Arroz para América Latina y el Caribe y la Novena Conferencia de Piricularia en Arroz y Trigo, 1-14 junio 2024. 1 p.en_US
dcterms.extent1 p.en_US
dcterms.issued2024-06-12en_US
dcterms.languageesen_US
dcterms.licenseOtheren_US
dcterms.subjectriceen_US
dcterms.subjectarrozen_US
dcterms.subjectgenesen_US
dcterms.subjectpiramidización de genesen_US
dcterms.typePosteren_US

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