Influence of Fusarium spp. isolate and inoculum density on resistance screening tests in onion
Fusarium basal rot (FBR), which is caused predominantly by Fusarium oxysporum and F. proliferatum, is the main limiting factor of onion crops. Resistant cultivars obtained in other countries do not behave as such in Argentina crop fields. The cultivars Antártica- INTA, Grano de Oro-Seminis, Valcat...
| Autores principales: | , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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Brazilian Phytopathological Society
2018
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| Acceso en línea: | http://hdl.handle.net/20.500.12123/3110 http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1982-56762014000100003&lng=en&nrm=iso&tlng=en |
| _version_ | 1855483180481511424 |
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| author | Caligiore Gei, Pablo Fernando Valdez, Jorge Gustavo Piccolo, Ricardo Jose Galmarini, Claudio Romulo |
| author_browse | Caligiore Gei, Pablo Fernando Galmarini, Claudio Romulo Piccolo, Ricardo Jose Valdez, Jorge Gustavo |
| author_facet | Caligiore Gei, Pablo Fernando Valdez, Jorge Gustavo Piccolo, Ricardo Jose Galmarini, Claudio Romulo |
| author_sort | Caligiore Gei, Pablo Fernando |
| collection | INTA Digital |
| description | Fusarium basal rot (FBR), which is caused predominantly by Fusarium oxysporum and F. proliferatum, is the main limiting factor
of onion crops. Resistant cultivars obtained in other countries do not behave as such in Argentina crop fields. The cultivars Antártica-
INTA, Grano de Oro-Seminis, Valcatorce-INTA and TW-2007 (reported as tolerant) were tested with five Fusarium spp. isolates, using
four inoculum concentrations. Disease incidence was recorded along 28 days and the area under disease progress curve was calculated. Diverse epidemiological models were fitted to experimental data. There were significant differences in the resistance level among cultivars, with TW-2007 being the most tolerant. Local Fusarium isolates were the most virulent ones. The concentration of 10,000 microconidia/gram was the most lethal for all isolates. The absence of resistance to Fusarium in the four cultivars tested was confirmed. Inoculum concentration and isolate are critical factors in screening for resistance to FBR. Breeding based on the selection of genotypes against low virulence strains of Fusarium spp. and the presence of more aggressive strains in local fields may be one of the causes why varieties reported as resistant or tolerant behave as susceptible in our environment. |
| format | Artículo |
| id | INTA3110 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| publisher | Brazilian Phytopathological Society |
| publisherStr | Brazilian Phytopathological Society |
| record_format | dspace |
| spelling | INTA31102018-08-16T18:21:03Z Influence of Fusarium spp. isolate and inoculum density on resistance screening tests in onion Caligiore Gei, Pablo Fernando Valdez, Jorge Gustavo Piccolo, Ricardo Jose Galmarini, Claudio Romulo Fusarium Allium Cepa Podredumbre de la Raíz Cebolla Variedades Inoculación Mejora Resistencia a la Enfermedad Fusarium Oxysporum Fusarium Proliferatum Root Rots Onions Varieties Inoculation Breeding Disease Resistance Inoculum Concentration Fusarium basal rot (FBR), which is caused predominantly by Fusarium oxysporum and F. proliferatum, is the main limiting factor of onion crops. Resistant cultivars obtained in other countries do not behave as such in Argentina crop fields. The cultivars Antártica- INTA, Grano de Oro-Seminis, Valcatorce-INTA and TW-2007 (reported as tolerant) were tested with five Fusarium spp. isolates, using four inoculum concentrations. Disease incidence was recorded along 28 days and the area under disease progress curve was calculated. Diverse epidemiological models were fitted to experimental data. There were significant differences in the resistance level among cultivars, with TW-2007 being the most tolerant. Local Fusarium isolates were the most virulent ones. The concentration of 10,000 microconidia/gram was the most lethal for all isolates. The absence of resistance to Fusarium in the four cultivars tested was confirmed. Inoculum concentration and isolate are critical factors in screening for resistance to FBR. Breeding based on the selection of genotypes against low virulence strains of Fusarium spp. and the presence of more aggressive strains in local fields may be one of the causes why varieties reported as resistant or tolerant behave as susceptible in our environment. EEA La Consulta Fil: Caligiore Gei, Pablo Fernando. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria La Consulta; Argentina Fil: Valdez, Jorge Gustavo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria La Consulta; Argentina Fil: Piccolo, Ricardo Jose. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria La Consulta; Argentina Fil: Galmarini, Claudio Romulo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria La Consulta; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina 2018-08-16T18:15:55Z 2018-08-16T18:15:55Z 2014 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/3110 http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1982-56762014000100003&lng=en&nrm=iso&tlng=en 1983-2052 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Brazilian Phytopathological Society Tropical plant pathology 39 (1) : 019-027. (January - February 2014) |
| spellingShingle | Fusarium Allium Cepa Podredumbre de la Raíz Cebolla Variedades Inoculación Mejora Resistencia a la Enfermedad Fusarium Oxysporum Fusarium Proliferatum Root Rots Onions Varieties Inoculation Breeding Disease Resistance Inoculum Concentration Caligiore Gei, Pablo Fernando Valdez, Jorge Gustavo Piccolo, Ricardo Jose Galmarini, Claudio Romulo Influence of Fusarium spp. isolate and inoculum density on resistance screening tests in onion |
| title | Influence of Fusarium spp. isolate and inoculum density on resistance screening tests in onion |
| title_full | Influence of Fusarium spp. isolate and inoculum density on resistance screening tests in onion |
| title_fullStr | Influence of Fusarium spp. isolate and inoculum density on resistance screening tests in onion |
| title_full_unstemmed | Influence of Fusarium spp. isolate and inoculum density on resistance screening tests in onion |
| title_short | Influence of Fusarium spp. isolate and inoculum density on resistance screening tests in onion |
| title_sort | influence of fusarium spp isolate and inoculum density on resistance screening tests in onion |
| topic | Fusarium Allium Cepa Podredumbre de la Raíz Cebolla Variedades Inoculación Mejora Resistencia a la Enfermedad Fusarium Oxysporum Fusarium Proliferatum Root Rots Onions Varieties Inoculation Breeding Disease Resistance Inoculum Concentration |
| url | http://hdl.handle.net/20.500.12123/3110 http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1982-56762014000100003&lng=en&nrm=iso&tlng=en |
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