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
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/135523

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spelling 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:UNLP2025-09-03T11:04:03Zoai: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:13292025-09-03 11:04:03.74SEDICI (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
dc.date.none.fl_str_mv 2006-02
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info:eu-repo/semantics/publishedVersion
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info:eu-repo/semantics/altIdentifier/issn/1573-5060
info:eu-repo/semantics/altIdentifier/doi/10.1007/s10681-005-9037-8
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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