Responses to N Deficiency in Stay Green and Non-Stay Green Argentinean Hybrids of Maize

Autores
Antonietta, Mariana; Acciaresi, Horacio Abel; Guiamet, Juan José
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Breeding has developed better yielding maize hybrids for low N environments, which also have delayed leaf senescence (‘stay green’ trait, SG). Here, we studied whether the SG trait can further improve yield of modern hybrids under N-limiting conditions. In two field experiments, four maize hybrids with different senescence behaviour were grown under three N fertilization levels, from 0 to 200 kg N ha 1 (N0, N100 and N200). After silking, hybrids differed for senescence depending on the canopy layer (P < 0.05): the SG AX878 only delayed senescence at the mid and upper canopy layers while the SG NK880 delayed senescence of all layers. Across N doses, higher yields were achieved by both SG hybrids, AX878 and NK880 (P < 0.05) but yield was not only determined by senescence behaviour. Kernel weight (KW) response to N availability was larger for SGs than for their non-‘stay green’ counterparts. Delayed senescence in SG hybrids was not related to higher post-silking N uptake but to higher (P < 0.05) %N in leaves and lower (P < 0.05) %N in kernels at harvest (below the critical 1.1 % under N deficiency). Across N levels, KW positively related to N content per kernel, with a steeper slope (P < 0.05) for the SG hybrids. Taken together, our results suggest that a condition where N limits kernel growth, in a scenario of saturating C availability, may be common to stay green genotypes of maize.
Fil: Antonietta, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Fisiología Vegetal. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Fisiología Vegetal; Argentina
Fil: Acciaresi, Horacio Abel.. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino; Argentina
Fil: Guiamet, Juan Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Fisiología Vegetal; Argentina; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales; Argentina
Fuente
Journal of agronomy and crop science 202 (3) : 231-242. (2016)
Materia
Maíz
Nitrógeno
Híbridos
Maize
Nitrogen
Hybrids
Nutrient Deficiencies
Deficiencia de Nutrientes
Nivel de accesibilidad
acceso restringido
Condiciones de uso
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
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spelling Responses to N Deficiency in Stay Green and Non-Stay Green Argentinean Hybrids of MaizeAntonietta, MarianaAcciaresi, Horacio AbelGuiamet, Juan JoséMaízNitrógenoHíbridosMaizeNitrogenHybridsNutrient DeficienciesDeficiencia de NutrientesBreeding has developed better yielding maize hybrids for low N environments, which also have delayed leaf senescence (‘stay green’ trait, SG). Here, we studied whether the SG trait can further improve yield of modern hybrids under N-limiting conditions. In two field experiments, four maize hybrids with different senescence behaviour were grown under three N fertilization levels, from 0 to 200 kg N ha 1 (N0, N100 and N200). After silking, hybrids differed for senescence depending on the canopy layer (P < 0.05): the SG AX878 only delayed senescence at the mid and upper canopy layers while the SG NK880 delayed senescence of all layers. Across N doses, higher yields were achieved by both SG hybrids, AX878 and NK880 (P < 0.05) but yield was not only determined by senescence behaviour. Kernel weight (KW) response to N availability was larger for SGs than for their non-‘stay green’ counterparts. Delayed senescence in SG hybrids was not related to higher post-silking N uptake but to higher (P < 0.05) %N in leaves and lower (P < 0.05) %N in kernels at harvest (below the critical 1.1 % under N deficiency). Across N levels, KW positively related to N content per kernel, with a steeper slope (P < 0.05) for the SG hybrids. Taken together, our results suggest that a condition where N limits kernel growth, in a scenario of saturating C availability, may be common to stay green genotypes of maize.Fil: Antonietta, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Fisiología Vegetal. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Fisiología Vegetal; ArgentinaFil: Acciaresi, Horacio Abel.. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino; ArgentinaFil: Guiamet, Juan Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Fisiología Vegetal; Argentina; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales; Argentina2017-08-07T12:02:25Z2017-08-07T12:02:25Z2016-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/905http://onlinelibrary.wiley.com/doi/10.1111/jac.12136/abstract0931-2250DOI: 10.1111/jac.12136Journal of agronomy and crop science 202 (3) : 231-242. (2016)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología AgropecuariaengArgentina (nation)info:eu-repo/semantics/restrictedAccess2025-10-23T11:16:20Zoai:localhost:20.500.12123/905instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-10-23 11:16:20.617INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Responses to N Deficiency in Stay Green and Non-Stay Green Argentinean Hybrids of Maize
title Responses to N Deficiency in Stay Green and Non-Stay Green Argentinean Hybrids of Maize
spellingShingle Responses to N Deficiency in Stay Green and Non-Stay Green Argentinean Hybrids of Maize
Antonietta, Mariana
Maíz
Nitrógeno
Híbridos
Maize
Nitrogen
Hybrids
Nutrient Deficiencies
Deficiencia de Nutrientes
title_short Responses to N Deficiency in Stay Green and Non-Stay Green Argentinean Hybrids of Maize
title_full Responses to N Deficiency in Stay Green and Non-Stay Green Argentinean Hybrids of Maize
title_fullStr Responses to N Deficiency in Stay Green and Non-Stay Green Argentinean Hybrids of Maize
title_full_unstemmed Responses to N Deficiency in Stay Green and Non-Stay Green Argentinean Hybrids of Maize
title_sort Responses to N Deficiency in Stay Green and Non-Stay Green Argentinean Hybrids of Maize
dc.creator.none.fl_str_mv Antonietta, Mariana
Acciaresi, Horacio Abel
Guiamet, Juan José
author Antonietta, Mariana
author_facet Antonietta, Mariana
Acciaresi, Horacio Abel
Guiamet, Juan José
author_role author
author2 Acciaresi, Horacio Abel
Guiamet, Juan José
author2_role author
author
dc.subject.none.fl_str_mv Maíz
Nitrógeno
Híbridos
Maize
Nitrogen
Hybrids
Nutrient Deficiencies
Deficiencia de Nutrientes
topic Maíz
Nitrógeno
Híbridos
Maize
Nitrogen
Hybrids
Nutrient Deficiencies
Deficiencia de Nutrientes
dc.description.none.fl_txt_mv Breeding has developed better yielding maize hybrids for low N environments, which also have delayed leaf senescence (‘stay green’ trait, SG). Here, we studied whether the SG trait can further improve yield of modern hybrids under N-limiting conditions. In two field experiments, four maize hybrids with different senescence behaviour were grown under three N fertilization levels, from 0 to 200 kg N ha 1 (N0, N100 and N200). After silking, hybrids differed for senescence depending on the canopy layer (P < 0.05): the SG AX878 only delayed senescence at the mid and upper canopy layers while the SG NK880 delayed senescence of all layers. Across N doses, higher yields were achieved by both SG hybrids, AX878 and NK880 (P < 0.05) but yield was not only determined by senescence behaviour. Kernel weight (KW) response to N availability was larger for SGs than for their non-‘stay green’ counterparts. Delayed senescence in SG hybrids was not related to higher post-silking N uptake but to higher (P < 0.05) %N in leaves and lower (P < 0.05) %N in kernels at harvest (below the critical 1.1 % under N deficiency). Across N levels, KW positively related to N content per kernel, with a steeper slope (P < 0.05) for the SG hybrids. Taken together, our results suggest that a condition where N limits kernel growth, in a scenario of saturating C availability, may be common to stay green genotypes of maize.
Fil: Antonietta, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Fisiología Vegetal. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Fisiología Vegetal; Argentina
Fil: Acciaresi, Horacio Abel.. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino; Argentina
Fil: Guiamet, Juan Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Fisiología Vegetal; Argentina; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales; Argentina
description Breeding has developed better yielding maize hybrids for low N environments, which also have delayed leaf senescence (‘stay green’ trait, SG). Here, we studied whether the SG trait can further improve yield of modern hybrids under N-limiting conditions. In two field experiments, four maize hybrids with different senescence behaviour were grown under three N fertilization levels, from 0 to 200 kg N ha 1 (N0, N100 and N200). After silking, hybrids differed for senescence depending on the canopy layer (P < 0.05): the SG AX878 only delayed senescence at the mid and upper canopy layers while the SG NK880 delayed senescence of all layers. Across N doses, higher yields were achieved by both SG hybrids, AX878 and NK880 (P < 0.05) but yield was not only determined by senescence behaviour. Kernel weight (KW) response to N availability was larger for SGs than for their non-‘stay green’ counterparts. Delayed senescence in SG hybrids was not related to higher post-silking N uptake but to higher (P < 0.05) %N in leaves and lower (P < 0.05) %N in kernels at harvest (below the critical 1.1 % under N deficiency). Across N levels, KW positively related to N content per kernel, with a steeper slope (P < 0.05) for the SG hybrids. Taken together, our results suggest that a condition where N limits kernel growth, in a scenario of saturating C availability, may be common to stay green genotypes of maize.
publishDate 2016
dc.date.none.fl_str_mv 2016-06
2017-08-07T12:02:25Z
2017-08-07T12:02:25Z
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12123/905
http://onlinelibrary.wiley.com/doi/10.1111/jac.12136/abstract
0931-2250
DOI: 10.1111/jac.12136
url http://hdl.handle.net/20.500.12123/905
http://onlinelibrary.wiley.com/doi/10.1111/jac.12136/abstract
identifier_str_mv 0931-2250
DOI: 10.1111/jac.12136
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.source.none.fl_str_mv Journal of agronomy and crop science 202 (3) : 231-242. (2016)
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 12.982451

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