A time-window within the grain filling period accounted for early leaf senescence in maize under sink limitation

Autores
Dosio, Guillermo; Cicore, Pablo Leandro; Rizzalli, Roberto Héctor
Año de publicación
2024
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In annual crops such as maize, assimilates demand exerted by grains converges with increasing leaf senescence. As sink demand changes as grains growth, leaf senescence could also be affected during the grain filling period. In this work, we evaluated the effect of a decrease in sinks demand at different moments of the grain filling period on maize leaf senescence. Sinks were modified in field experimentation via restriction of pollination or ear removal at four different times during the grain filling period. These growth and senescence-related-variables were periodically assessed: dry matter, stem carbohydrates, leaf initiation, leaf area, chlorophyll, sap flow and photosynthesis. Restriction of pollination and ear removal increased stem carbohydrates concentration and stem dry matter. Leaf senescence was accelerated only when ear was removed at R3 and R4 phenological stages. The magnitude of the effect was leaf position-dependent. A simple model relating leaf area duration or the area under the chlorophyll evolution curve with leaves age accounted for the observed results. Protecting grains during this window would avoid a decrease in grain yield both due to direct damage to the grains and the source reduction for advanced leaf senescence. These results would be of interest to producers, breeders and modelers of this crop.
EEA Balcarce
Fil: Dosio, Guillermo. Comisión de Investigaciones Científicas; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Instituto de Innovación para el Desarrollo Agroalimentario y Agroenergético Sostenible; Argentina.
Fil: Dosio, Guillermo. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.
Fil: Cicore, Pablo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina.
Fil: Cicore, Pablo. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.
Fil: Rizzalli, Roberto. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.
Fuente
European Journal of Agronomy 152 : 127027 (January 2024)
Materia
Maíz
Granos
Hojas
Envejecimiento
Maize
Grain
Leaves
Ageing
Seed Filling
Hinchamiento de la Semilla
Llenado de Grano
Nivel de accesibilidad
acceso restringido
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/16827
Acceder
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oai_identifier_str oai:localhost:20.500.12123/16827
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network_name_str INTA Digital (INTA)
spelling A time-window within the grain filling period accounted for early leaf senescence in maize under sink limitationDosio, GuillermoCicore, Pablo LeandroRizzalli, Roberto HéctorMaízGranosHojasEnvejecimientoMaizeGrainLeavesAgeingSeed FillingHinchamiento de la SemillaLlenado de GranoIn annual crops such as maize, assimilates demand exerted by grains converges with increasing leaf senescence. As sink demand changes as grains growth, leaf senescence could also be affected during the grain filling period. In this work, we evaluated the effect of a decrease in sinks demand at different moments of the grain filling period on maize leaf senescence. Sinks were modified in field experimentation via restriction of pollination or ear removal at four different times during the grain filling period. These growth and senescence-related-variables were periodically assessed: dry matter, stem carbohydrates, leaf initiation, leaf area, chlorophyll, sap flow and photosynthesis. Restriction of pollination and ear removal increased stem carbohydrates concentration and stem dry matter. Leaf senescence was accelerated only when ear was removed at R3 and R4 phenological stages. The magnitude of the effect was leaf position-dependent. A simple model relating leaf area duration or the area under the chlorophyll evolution curve with leaves age accounted for the observed results. Protecting grains during this window would avoid a decrease in grain yield both due to direct damage to the grains and the source reduction for advanced leaf senescence. These results would be of interest to producers, breeders and modelers of this crop.EEA BalcarceFil: Dosio, Guillermo. Comisión de Investigaciones Científicas; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Instituto de Innovación para el Desarrollo Agroalimentario y Agroenergético Sostenible; Argentina.Fil: Dosio, Guillermo. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.Fil: Cicore, Pablo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina.Fil: Cicore, Pablo. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.Fil: Rizzalli, Roberto. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.Elsevier2024-02-28T14:27:57Z2024-02-28T14:27:57Z2024-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/16827https://www.sciencedirect.com/science/article/pii/S11610301230029521161-0301 (Print)1873-7331 (Online)https://doi.org/10.1016/j.eja.2023.127027European Journal of Agronomy 152 : 127027 (January 2024)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/restrictedAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)2025-09-29T13:46:22Zoai:localhost:20.500.12123/16827instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-09-29 13:46:22.776INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv A time-window within the grain filling period accounted for early leaf senescence in maize under sink limitation
title A time-window within the grain filling period accounted for early leaf senescence in maize under sink limitation
spellingShingle A time-window within the grain filling period accounted for early leaf senescence in maize under sink limitation
Dosio, Guillermo
Maíz
Granos
Hojas
Envejecimiento
Maize
Grain
Leaves
Ageing
Seed Filling
Hinchamiento de la Semilla
Llenado de Grano
title_short A time-window within the grain filling period accounted for early leaf senescence in maize under sink limitation
title_full A time-window within the grain filling period accounted for early leaf senescence in maize under sink limitation
title_fullStr A time-window within the grain filling period accounted for early leaf senescence in maize under sink limitation
title_full_unstemmed A time-window within the grain filling period accounted for early leaf senescence in maize under sink limitation
title_sort A time-window within the grain filling period accounted for early leaf senescence in maize under sink limitation
dc.creator.none.fl_str_mv Dosio, Guillermo
Cicore, Pablo Leandro
Rizzalli, Roberto Héctor
author Dosio, Guillermo
author_facet Dosio, Guillermo
Cicore, Pablo Leandro
Rizzalli, Roberto Héctor
author_role author
author2 Cicore, Pablo Leandro
Rizzalli, Roberto Héctor
author2_role author
author
dc.subject.none.fl_str_mv Maíz
Granos
Hojas
Envejecimiento
Maize
Grain
Leaves
Ageing
Seed Filling
Hinchamiento de la Semilla
Llenado de Grano
topic Maíz
Granos
Hojas
Envejecimiento
Maize
Grain
Leaves
Ageing
Seed Filling
Hinchamiento de la Semilla
Llenado de Grano
dc.description.none.fl_txt_mv In annual crops such as maize, assimilates demand exerted by grains converges with increasing leaf senescence. As sink demand changes as grains growth, leaf senescence could also be affected during the grain filling period. In this work, we evaluated the effect of a decrease in sinks demand at different moments of the grain filling period on maize leaf senescence. Sinks were modified in field experimentation via restriction of pollination or ear removal at four different times during the grain filling period. These growth and senescence-related-variables were periodically assessed: dry matter, stem carbohydrates, leaf initiation, leaf area, chlorophyll, sap flow and photosynthesis. Restriction of pollination and ear removal increased stem carbohydrates concentration and stem dry matter. Leaf senescence was accelerated only when ear was removed at R3 and R4 phenological stages. The magnitude of the effect was leaf position-dependent. A simple model relating leaf area duration or the area under the chlorophyll evolution curve with leaves age accounted for the observed results. Protecting grains during this window would avoid a decrease in grain yield both due to direct damage to the grains and the source reduction for advanced leaf senescence. These results would be of interest to producers, breeders and modelers of this crop.
EEA Balcarce
Fil: Dosio, Guillermo. Comisión de Investigaciones Científicas; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Instituto de Innovación para el Desarrollo Agroalimentario y Agroenergético Sostenible; Argentina.
Fil: Dosio, Guillermo. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.
Fil: Cicore, Pablo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina.
Fil: Cicore, Pablo. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.
Fil: Rizzalli, Roberto. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.
description In annual crops such as maize, assimilates demand exerted by grains converges with increasing leaf senescence. As sink demand changes as grains growth, leaf senescence could also be affected during the grain filling period. In this work, we evaluated the effect of a decrease in sinks demand at different moments of the grain filling period on maize leaf senescence. Sinks were modified in field experimentation via restriction of pollination or ear removal at four different times during the grain filling period. These growth and senescence-related-variables were periodically assessed: dry matter, stem carbohydrates, leaf initiation, leaf area, chlorophyll, sap flow and photosynthesis. Restriction of pollination and ear removal increased stem carbohydrates concentration and stem dry matter. Leaf senescence was accelerated only when ear was removed at R3 and R4 phenological stages. The magnitude of the effect was leaf position-dependent. A simple model relating leaf area duration or the area under the chlorophyll evolution curve with leaves age accounted for the observed results. Protecting grains during this window would avoid a decrease in grain yield both due to direct damage to the grains and the source reduction for advanced leaf senescence. These results would be of interest to producers, breeders and modelers of this crop.
publishDate 2024
dc.date.none.fl_str_mv 2024-02-28T14:27:57Z
2024-02-28T14:27:57Z
2024-01
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/20.500.12123/16827
https://www.sciencedirect.com/science/article/pii/S1161030123002952
1161-0301 (Print)
1873-7331 (Online)
https://doi.org/10.1016/j.eja.2023.127027
url http://hdl.handle.net/20.500.12123/16827
https://www.sciencedirect.com/science/article/pii/S1161030123002952
https://doi.org/10.1016/j.eja.2023.127027
identifier_str_mv 1161-0301 (Print)
1873-7331 (Online)
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/restrictedAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv restrictedAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv European Journal of Agronomy 152 : 127027 (January 2024)
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
_version_ 1844619185163862016
score 12.559606

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