Qualitative and quantitative factors affecting the relationship between Canola leaf spot epidemic and stem base canker (Leptosphaeria maculans) in Argentina

Autores
Edwards Molina, Juan Pablo; Escande, Alberto; Cendoya, María Gabriela; Quiroz, Facundo Jose
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión aceptada
Descripción
Stem base canker caused by Leptosphaeria maculans (SBC) has been reported to affect canola production worldwide. Ascospores infections produce leaf spots (LS) in early vegetative stages. From these initial spots, the fungus grows towards the stem crown and may cause SBC, lodging and premature ripening at maturity. Growth stage at LS presence, cultivar resistance and environment conditions are factors associated with SBC severity. Since there are no studies that associate the LS epidemic with SBC for the Argentine cropping conditions we performed two experiments to address this essential knowledge for SBC management. In 2010, plants of four cultivars (varying in their level of resistance to LS and SBC) ranging from cotyledon stage up to 9 developed leaves were transplanted to a field where artificial inoculation was carried out by spreading infected canola stubble from the previous year. The probability of SBC occurrence depended on the interaction between cultivar resistance level and the number of developed leaves at the moment of LS detection. Based on these results, in 2011 plots of the most susceptible cultivar (Nexera 8450) received different fungicide protection treatments (azoxystrobin or propiconazole and timing of spraying) and were exposed to natural L. maculans infections. We observed that the maximum incidence of LS up to 8th developed leaf best correlated with SBC severity at maturity and a linear regression was fitted to model the relationship between these two variables.
Instituto de Patología Vegetal
Fil: Edwards Molina, Juan Pablo. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina. Universidade de São Paulo. Departamento de Fitopatologia e nematologia; Brasil
Fil: Escande, Alberto. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina
Fil: Cendoya, María Gabriela. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina
Fil: Quiroz, Facundo Jose. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina
Fuente
Australasian plant pathology 46 (5) : 453–461. (September 2017)
Materia
Leptosphaeria Maculans
Semillas Oleaginosas
Control Químico
Oilseeds
Chemical Control
Stem Base Canker
Canola Leaf Spot
Mancha Foliar de Canola
Cancro de la Base del Tallo
Argentina
Phoma Lingam
Nivel de accesibilidad
acceso restringido
Condiciones de uso
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/3699
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oai_identifier_str oai:localhost:20.500.12123/3699
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spelling Qualitative and quantitative factors affecting the relationship between Canola leaf spot epidemic and stem base canker (Leptosphaeria maculans) in ArgentinaEdwards Molina, Juan PabloEscande, AlbertoCendoya, María GabrielaQuiroz, Facundo JoseLeptosphaeria MaculansSemillas OleaginosasControl QuímicoOilseedsChemical ControlStem Base CankerCanola Leaf SpotMancha Foliar de CanolaCancro de la Base del TalloArgentinaPhoma LingamStem base canker caused by Leptosphaeria maculans (SBC) has been reported to affect canola production worldwide. Ascospores infections produce leaf spots (LS) in early vegetative stages. From these initial spots, the fungus grows towards the stem crown and may cause SBC, lodging and premature ripening at maturity. Growth stage at LS presence, cultivar resistance and environment conditions are factors associated with SBC severity. Since there are no studies that associate the LS epidemic with SBC for the Argentine cropping conditions we performed two experiments to address this essential knowledge for SBC management. In 2010, plants of four cultivars (varying in their level of resistance to LS and SBC) ranging from cotyledon stage up to 9 developed leaves were transplanted to a field where artificial inoculation was carried out by spreading infected canola stubble from the previous year. The probability of SBC occurrence depended on the interaction between cultivar resistance level and the number of developed leaves at the moment of LS detection. Based on these results, in 2011 plots of the most susceptible cultivar (Nexera 8450) received different fungicide protection treatments (azoxystrobin or propiconazole and timing of spraying) and were exposed to natural L. maculans infections. We observed that the maximum incidence of LS up to 8th developed leaf best correlated with SBC severity at maturity and a linear regression was fitted to model the relationship between these two variables.Instituto de Patología VegetalFil: Edwards Molina, Juan Pablo. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina. Universidade de São Paulo. Departamento de Fitopatologia e nematologia; BrasilFil: Escande, Alberto. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; ArgentinaFil: Cendoya, María Gabriela. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; ArgentinaFil: Quiroz, Facundo Jose. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; ArgentinaSpringerinfo:eu-repo/date/embargoedEnd/2019-09-252018-10-24T18:04:00Z2018-10-24T18:04:00Z2017-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/36990815-31911448-6032 (Online)https://doi.org/10.1007/s13313-017-0507-yAustralasian plant pathology 46 (5) : 453–461. (September 2017)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología AgropecuariaengArgentina (nation)info:eu-repo/semantics/restrictedAccess2025-09-04T09:47:38Zoai:localhost:20.500.12123/3699instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-09-04 09:47:39.015INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Qualitative and quantitative factors affecting the relationship between Canola leaf spot epidemic and stem base canker (Leptosphaeria maculans) in Argentina
title Qualitative and quantitative factors affecting the relationship between Canola leaf spot epidemic and stem base canker (Leptosphaeria maculans) in Argentina
spellingShingle Qualitative and quantitative factors affecting the relationship between Canola leaf spot epidemic and stem base canker (Leptosphaeria maculans) in Argentina
Edwards Molina, Juan Pablo
Leptosphaeria Maculans
Semillas Oleaginosas
Control Químico
Oilseeds
Chemical Control
Stem Base Canker
Canola Leaf Spot
Mancha Foliar de Canola
Cancro de la Base del Tallo
Argentina
Phoma Lingam
title_short Qualitative and quantitative factors affecting the relationship between Canola leaf spot epidemic and stem base canker (Leptosphaeria maculans) in Argentina
title_full Qualitative and quantitative factors affecting the relationship between Canola leaf spot epidemic and stem base canker (Leptosphaeria maculans) in Argentina
title_fullStr Qualitative and quantitative factors affecting the relationship between Canola leaf spot epidemic and stem base canker (Leptosphaeria maculans) in Argentina
title_full_unstemmed Qualitative and quantitative factors affecting the relationship between Canola leaf spot epidemic and stem base canker (Leptosphaeria maculans) in Argentina
title_sort Qualitative and quantitative factors affecting the relationship between Canola leaf spot epidemic and stem base canker (Leptosphaeria maculans) in Argentina
dc.creator.none.fl_str_mv Edwards Molina, Juan Pablo
Escande, Alberto
Cendoya, María Gabriela
Quiroz, Facundo Jose
author Edwards Molina, Juan Pablo
author_facet Edwards Molina, Juan Pablo
Escande, Alberto
Cendoya, María Gabriela
Quiroz, Facundo Jose
author_role author
author2 Escande, Alberto
Cendoya, María Gabriela
Quiroz, Facundo Jose
author2_role author
author
author
dc.subject.none.fl_str_mv Leptosphaeria Maculans
Semillas Oleaginosas
Control Químico
Oilseeds
Chemical Control
Stem Base Canker
Canola Leaf Spot
Mancha Foliar de Canola
Cancro de la Base del Tallo
Argentina
Phoma Lingam
topic Leptosphaeria Maculans
Semillas Oleaginosas
Control Químico
Oilseeds
Chemical Control
Stem Base Canker
Canola Leaf Spot
Mancha Foliar de Canola
Cancro de la Base del Tallo
Argentina
Phoma Lingam
dc.description.none.fl_txt_mv Stem base canker caused by Leptosphaeria maculans (SBC) has been reported to affect canola production worldwide. Ascospores infections produce leaf spots (LS) in early vegetative stages. From these initial spots, the fungus grows towards the stem crown and may cause SBC, lodging and premature ripening at maturity. Growth stage at LS presence, cultivar resistance and environment conditions are factors associated with SBC severity. Since there are no studies that associate the LS epidemic with SBC for the Argentine cropping conditions we performed two experiments to address this essential knowledge for SBC management. In 2010, plants of four cultivars (varying in their level of resistance to LS and SBC) ranging from cotyledon stage up to 9 developed leaves were transplanted to a field where artificial inoculation was carried out by spreading infected canola stubble from the previous year. The probability of SBC occurrence depended on the interaction between cultivar resistance level and the number of developed leaves at the moment of LS detection. Based on these results, in 2011 plots of the most susceptible cultivar (Nexera 8450) received different fungicide protection treatments (azoxystrobin or propiconazole and timing of spraying) and were exposed to natural L. maculans infections. We observed that the maximum incidence of LS up to 8th developed leaf best correlated with SBC severity at maturity and a linear regression was fitted to model the relationship between these two variables.
Instituto de Patología Vegetal
Fil: Edwards Molina, Juan Pablo. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina. Universidade de São Paulo. Departamento de Fitopatologia e nematologia; Brasil
Fil: Escande, Alberto. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina
Fil: Cendoya, María Gabriela. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina
Fil: Quiroz, Facundo Jose. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina
description Stem base canker caused by Leptosphaeria maculans (SBC) has been reported to affect canola production worldwide. Ascospores infections produce leaf spots (LS) in early vegetative stages. From these initial spots, the fungus grows towards the stem crown and may cause SBC, lodging and premature ripening at maturity. Growth stage at LS presence, cultivar resistance and environment conditions are factors associated with SBC severity. Since there are no studies that associate the LS epidemic with SBC for the Argentine cropping conditions we performed two experiments to address this essential knowledge for SBC management. In 2010, plants of four cultivars (varying in their level of resistance to LS and SBC) ranging from cotyledon stage up to 9 developed leaves were transplanted to a field where artificial inoculation was carried out by spreading infected canola stubble from the previous year. The probability of SBC occurrence depended on the interaction between cultivar resistance level and the number of developed leaves at the moment of LS detection. Based on these results, in 2011 plots of the most susceptible cultivar (Nexera 8450) received different fungicide protection treatments (azoxystrobin or propiconazole and timing of spraying) and were exposed to natural L. maculans infections. We observed that the maximum incidence of LS up to 8th developed leaf best correlated with SBC severity at maturity and a linear regression was fitted to model the relationship between these two variables.
publishDate 2017
dc.date.none.fl_str_mv 2017-09
2018-10-24T18:04:00Z
2018-10-24T18:04:00Z
info:eu-repo/date/embargoedEnd/2019-09-25
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12123/3699
0815-3191
1448-6032 (Online)
https://doi.org/10.1007/s13313-017-0507-y
url http://hdl.handle.net/20.500.12123/3699
https://doi.org/10.1007/s13313-017-0507-y
identifier_str_mv 0815-3191
1448-6032 (Online)
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/restrictedAccess
eu_rights_str_mv restrictedAccess
dc.format.none.fl_str_mv application/pdf
dc.coverage.none.fl_str_mv Argentina (nation)
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv Australasian plant pathology 46 (5) : 453–461. (September 2017)
reponame:INTA Digital (INTA)
instname:Instituto Nacional de Tecnología Agropecuaria
reponame_str INTA Digital (INTA)
collection INTA Digital (INTA)
instname_str Instituto Nacional de Tecnología Agropecuaria
repository.name.fl_str_mv INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria
repository.mail.fl_str_mv tripaldi.nicolas@inta.gob.ar
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score 12.623145

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