Stability of maize resistance to the ear rots caused by <i>Fusarium graminearum</i> and <i>F. verticillioides</i> in Argentinian and Canadian environments
- Autores
- Presello, Daniel A.; Iglesias, Juliana; Botta, Grisela; Reid, Lana M.; Lori, Gladys Albina; Eyherabide, Guillermo Hugo
- Año de publicación
- 2006
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Sources of resistance to Fusarium spp. are needed to develop maize hybrids resistant to the accumulation of fungal mycotoxins in the grain. In a search for resistant germplasm in 1999 and 2000, a set of Argentinian maize populations was evaluated in Ottawa, Canada, for resistance to ear rots after inoculation with local isolates of Fusarium verticillioides and F. graminearum. Sixteen of these populations, varying in observed resistance levels, were re-evaluated in 2003 and 2004 in Pergamino, Argentina, using local isolates of the same fungi. Conidial suspensions of each fungal species were inoculated into the silk channel of primary ears. Disease severity was assessed after physiological maturity using a scale based on the percentage of visibly infected kernels. Genotype effect was more important than genotype-by-fungal species or genotype-by-fungal species-by-environment interaction effects. In addition, disease severity levels associated with each fungal species were positively correlated (P < 0.05) (r = 0.90, r = 0.81, r = 0.87 and r = 0.53, in Ottawa 1999 and 2000, and Pergamino 2003 and 2004, respectively). Populations ARZM 01107, ARZM 07138, ARZM 10041, ARZM 13031, ARZM 16002 and Pora INTA exhibited the highest and most stable resistance to both species. Considering that disease resistance exhibited low specificity to the environment and to the fungal species in evaluations conducted in a wide range of environments and with fungal isolates collected from different hemispheres, the most resistant populations are potential sources of genes for stable resistance to these Fusarium spp.
Facultad de Ciencias Agrarias y Forestales
Centro de Investigaciones en Fitopatología - Materia
-
Ciencias Agrarias
Fusarium verticillioides
Fusarium graminearum
maize
disease resistance - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/135523
Ver los metadatos del registro completo
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Stability of maize resistance to the ear rots caused by <i>Fusarium graminearum</i> and <i>F. verticillioides</i> in Argentinian and Canadian environmentsPresello, Daniel A.Iglesias, JulianaBotta, GriselaReid, Lana M.Lori, Gladys AlbinaEyherabide, Guillermo HugoCiencias AgrariasFusarium verticillioidesFusarium graminearummaizedisease resistanceSources of resistance to <i>Fusarium</i> spp. are needed to develop maize hybrids resistant to the accumulation of fungal mycotoxins in the grain. In a search for resistant germplasm in 1999 and 2000, a set of Argentinian maize populations was evaluated in Ottawa, Canada, for resistance to ear rots after inoculation with local isolates of <i>Fusarium verticillioides</i> and <i>F. graminearum</i>. Sixteen of these populations, varying in observed resistance levels, were re-evaluated in 2003 and 2004 in Pergamino, Argentina, using local isolates of the same fungi. Conidial suspensions of each fungal species were inoculated into the silk channel of primary ears. Disease severity was assessed after physiological maturity using a scale based on the percentage of visibly infected kernels. Genotype effect was more important than genotype-by-fungal species or genotype-by-fungal species-by-environment interaction effects. In addition, disease severity levels associated with each fungal species were positively correlated (P < 0.05) (r = 0.90, r = 0.81, r = 0.87 and r = 0.53, in Ottawa 1999 and 2000, and Pergamino 2003 and 2004, respectively). Populations ARZM 01107, ARZM 07138, ARZM 10041, ARZM 13031, ARZM 16002 and Pora INTA exhibited the highest and most stable resistance to both species. Considering that disease resistance exhibited low specificity to the environment and to the fungal species in evaluations conducted in a wide range of environments and with fungal isolates collected from different hemispheres, the most resistant populations are potential sources of genes for stable resistance to these <i>Fusarium</i> spp.Facultad de Ciencias Agrarias y ForestalesCentro de Investigaciones en Fitopatología2006-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf403-407http://sedici.unlp.edu.ar/handle/10915/135523enginfo:eu-repo/semantics/altIdentifier/issn/0014-2336info:eu-repo/semantics/altIdentifier/issn/1573-5060info:eu-repo/semantics/altIdentifier/doi/10.1007/s10681-005-9037-8info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:31:57Zoai:sedici.unlp.edu.ar:10915/135523Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:31:58.153SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
Stability of maize resistance to the ear rots caused by <i>Fusarium graminearum</i> and <i>F. verticillioides</i> in Argentinian and Canadian environments |
| title |
Stability of maize resistance to the ear rots caused by <i>Fusarium graminearum</i> and <i>F. verticillioides</i> in Argentinian and Canadian environments |
| spellingShingle |
Stability of maize resistance to the ear rots caused by <i>Fusarium graminearum</i> and <i>F. verticillioides</i> in Argentinian and Canadian environments Presello, Daniel A. Ciencias Agrarias Fusarium verticillioides Fusarium graminearum maize disease resistance |
| title_short |
Stability of maize resistance to the ear rots caused by <i>Fusarium graminearum</i> and <i>F. verticillioides</i> in Argentinian and Canadian environments |
| title_full |
Stability of maize resistance to the ear rots caused by <i>Fusarium graminearum</i> and <i>F. verticillioides</i> in Argentinian and Canadian environments |
| title_fullStr |
Stability of maize resistance to the ear rots caused by <i>Fusarium graminearum</i> and <i>F. verticillioides</i> in Argentinian and Canadian environments |
| title_full_unstemmed |
Stability of maize resistance to the ear rots caused by <i>Fusarium graminearum</i> and <i>F. verticillioides</i> in Argentinian and Canadian environments |
| title_sort |
Stability of maize resistance to the ear rots caused by <i>Fusarium graminearum</i> and <i>F. verticillioides</i> in Argentinian and Canadian environments |
| dc.creator.none.fl_str_mv |
Presello, Daniel A. Iglesias, Juliana Botta, Grisela Reid, Lana M. Lori, Gladys Albina Eyherabide, Guillermo Hugo |
| author |
Presello, Daniel A. |
| author_facet |
Presello, Daniel A. Iglesias, Juliana Botta, Grisela Reid, Lana M. Lori, Gladys Albina Eyherabide, Guillermo Hugo |
| author_role |
author |
| author2 |
Iglesias, Juliana Botta, Grisela Reid, Lana M. Lori, Gladys Albina Eyherabide, Guillermo Hugo |
| author2_role |
author author author author author |
| dc.subject.none.fl_str_mv |
Ciencias Agrarias Fusarium verticillioides Fusarium graminearum maize disease resistance |
| topic |
Ciencias Agrarias Fusarium verticillioides Fusarium graminearum maize disease resistance |
| dc.description.none.fl_txt_mv |
Sources of resistance to <i>Fusarium</i> spp. are needed to develop maize hybrids resistant to the accumulation of fungal mycotoxins in the grain. In a search for resistant germplasm in 1999 and 2000, a set of Argentinian maize populations was evaluated in Ottawa, Canada, for resistance to ear rots after inoculation with local isolates of <i>Fusarium verticillioides</i> and <i>F. graminearum</i>. Sixteen of these populations, varying in observed resistance levels, were re-evaluated in 2003 and 2004 in Pergamino, Argentina, using local isolates of the same fungi. Conidial suspensions of each fungal species were inoculated into the silk channel of primary ears. Disease severity was assessed after physiological maturity using a scale based on the percentage of visibly infected kernels. Genotype effect was more important than genotype-by-fungal species or genotype-by-fungal species-by-environment interaction effects. In addition, disease severity levels associated with each fungal species were positively correlated (P < 0.05) (r = 0.90, r = 0.81, r = 0.87 and r = 0.53, in Ottawa 1999 and 2000, and Pergamino 2003 and 2004, respectively). Populations ARZM 01107, ARZM 07138, ARZM 10041, ARZM 13031, ARZM 16002 and Pora INTA exhibited the highest and most stable resistance to both species. Considering that disease resistance exhibited low specificity to the environment and to the fungal species in evaluations conducted in a wide range of environments and with fungal isolates collected from different hemispheres, the most resistant populations are potential sources of genes for stable resistance to these <i>Fusarium</i> spp. Facultad de Ciencias Agrarias y Forestales Centro de Investigaciones en Fitopatología |
| description |
Sources of resistance to <i>Fusarium</i> spp. are needed to develop maize hybrids resistant to the accumulation of fungal mycotoxins in the grain. In a search for resistant germplasm in 1999 and 2000, a set of Argentinian maize populations was evaluated in Ottawa, Canada, for resistance to ear rots after inoculation with local isolates of <i>Fusarium verticillioides</i> and <i>F. graminearum</i>. Sixteen of these populations, varying in observed resistance levels, were re-evaluated in 2003 and 2004 in Pergamino, Argentina, using local isolates of the same fungi. Conidial suspensions of each fungal species were inoculated into the silk channel of primary ears. Disease severity was assessed after physiological maturity using a scale based on the percentage of visibly infected kernels. Genotype effect was more important than genotype-by-fungal species or genotype-by-fungal species-by-environment interaction effects. In addition, disease severity levels associated with each fungal species were positively correlated (P < 0.05) (r = 0.90, r = 0.81, r = 0.87 and r = 0.53, in Ottawa 1999 and 2000, and Pergamino 2003 and 2004, respectively). Populations ARZM 01107, ARZM 07138, ARZM 10041, ARZM 13031, ARZM 16002 and Pora INTA exhibited the highest and most stable resistance to both species. Considering that disease resistance exhibited low specificity to the environment and to the fungal species in evaluations conducted in a wide range of environments and with fungal isolates collected from different hemispheres, the most resistant populations are potential sources of genes for stable resistance to these <i>Fusarium</i> spp. |
| publishDate |
2006 |
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2006-02 |
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eng |
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