Kernel number response to plant density in tropical, temperate, and tropical × temperate maize hybrids

Autores
Cerrudo, Diego; Hernández, Mariano; Tollenaar, Matthijs; Vega, Claudia Rosa Cecilia; Echarte, Laura
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Kernel set response to plant density was examined in terms of physiological processes underlying kernel set in temperate (Te), tropical (Tr), and temperate × tropical (TeTr) maize (Zea mays L.) hybrids. Four field experiments were performed in a subtropical environment, and treatments combined two new and popular commercial hybrids of each group of germplasm background with five plant densities (2–30 plants m−2). Determinations included plant growth rate (PGRS) and topmost ear growth rate (EGRS) during the period bracketing silking, grain yield, and its components. In all hybrids, kernel number was the main grain yield component contributing to grain yield variations across densities. When grown in a high‐yielding subtropical environment, all hybrids exhibited increased kernel number per area with increasing plant density from 5 to 11 plants m−2. There was not a clear trend among groups of germplasm background in the number of kernel set at each plant density, but distinctive physiological processes underlying kernel number per plant (KNP) were evident between Te and Tr hybrids. Across plant densities, the KNP/PGRS ratio was larger and PGRS was lower in Te than in Tr hybrids. Larger KNP/PGRS in Te than in Tr hybrids were associated with greater prolificacy al low plant density and larger EGRS. In TeTr hybrids instead, there was not a common physiological process underlying kernel set, since genotypes representing this group shared traits similar to those of Te and Tr genotypes.
EEA Balcarce
Fil: Cerrudo, Diego. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.
Fil: Hernández, Mariano. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.
Fil: Tollenaar, Matthijs. The Climate Corp; Estados Unidos
Fil: Vega Claudia Rosa. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Manfredi; Argentina.
Fil: Echarte, Laura. Instituto Nacional de Tecnología Agropecuaria (INTA) Estación Experimental Agropecuaria Balcarce; Argentina Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Argentina.
Fuente
Crop Science 60 (1) : 381-390 (2020)
Materia
Maíz
Híbridos
Rendimiento
Granos
Germoplasma
Maize
Hybrids
Yields
Grain
Germplasm
Nivel de accesibilidad
acceso restringido
Condiciones de uso
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/7359
Acceder
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oai_identifier_str oai:localhost:20.500.12123/7359
network_acronym_str INTADig
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network_name_str INTA Digital (INTA)
spelling Kernel number response to plant density in tropical, temperate, and tropical × temperate maize hybridsCerrudo, DiegoHernández, MarianoTollenaar, MatthijsVega, Claudia Rosa CeciliaEcharte, LauraMaízHíbridosRendimientoGranosGermoplasmaMaizeHybridsYieldsGrainGermplasmKernel set response to plant density was examined in terms of physiological processes underlying kernel set in temperate (Te), tropical (Tr), and temperate × tropical (TeTr) maize (Zea mays L.) hybrids. Four field experiments were performed in a subtropical environment, and treatments combined two new and popular commercial hybrids of each group of germplasm background with five plant densities (2–30 plants m−2). Determinations included plant growth rate (PGRS) and topmost ear growth rate (EGRS) during the period bracketing silking, grain yield, and its components. In all hybrids, kernel number was the main grain yield component contributing to grain yield variations across densities. When grown in a high‐yielding subtropical environment, all hybrids exhibited increased kernel number per area with increasing plant density from 5 to 11 plants m−2. There was not a clear trend among groups of germplasm background in the number of kernel set at each plant density, but distinctive physiological processes underlying kernel number per plant (KNP) were evident between Te and Tr hybrids. Across plant densities, the KNP/PGRS ratio was larger and PGRS was lower in Te than in Tr hybrids. Larger KNP/PGRS in Te than in Tr hybrids were associated with greater prolificacy al low plant density and larger EGRS. In TeTr hybrids instead, there was not a common physiological process underlying kernel set, since genotypes representing this group shared traits similar to those of Te and Tr genotypes.EEA BalcarceFil: Cerrudo, Diego. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.Fil: Hernández, Mariano. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.Fil: Tollenaar, Matthijs. The Climate Corp; Estados UnidosFil: Vega Claudia Rosa. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Manfredi; Argentina.Fil: Echarte, Laura. Instituto Nacional de Tecnología Agropecuaria (INTA) Estación Experimental Agropecuaria Balcarce; Argentina Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Argentina.Crop Science Society of America2020-06-04T11:14:05Z2020-06-04T11:14:05Z2020-02-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/7359https://acsess.onlinelibrary.wiley.com/doi/abs/10.1002/csc2.200771435-0653https://doi.org/10.1002/csc2.20077Crop Science 60 (1) : 381-390 (2020)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/restrictedAccess2025-09-18T10:07:55Zoai:localhost:20.500.12123/7359instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-09-18 10:07:56.197INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Kernel number response to plant density in tropical, temperate, and tropical × temperate maize hybrids
title Kernel number response to plant density in tropical, temperate, and tropical × temperate maize hybrids
spellingShingle Kernel number response to plant density in tropical, temperate, and tropical × temperate maize hybrids
Cerrudo, Diego
Maíz
Híbridos
Rendimiento
Granos
Germoplasma
Maize
Hybrids
Yields
Grain
Germplasm
title_short Kernel number response to plant density in tropical, temperate, and tropical × temperate maize hybrids
title_full Kernel number response to plant density in tropical, temperate, and tropical × temperate maize hybrids
title_fullStr Kernel number response to plant density in tropical, temperate, and tropical × temperate maize hybrids
title_full_unstemmed Kernel number response to plant density in tropical, temperate, and tropical × temperate maize hybrids
title_sort Kernel number response to plant density in tropical, temperate, and tropical × temperate maize hybrids
dc.creator.none.fl_str_mv Cerrudo, Diego
Hernández, Mariano
Tollenaar, Matthijs
Vega, Claudia Rosa Cecilia
Echarte, Laura
author Cerrudo, Diego
author_facet Cerrudo, Diego
Hernández, Mariano
Tollenaar, Matthijs
Vega, Claudia Rosa Cecilia
Echarte, Laura
author_role author
author2 Hernández, Mariano
Tollenaar, Matthijs
Vega, Claudia Rosa Cecilia
Echarte, Laura
author2_role author
author
author
author
dc.subject.none.fl_str_mv Maíz
Híbridos
Rendimiento
Granos
Germoplasma
Maize
Hybrids
Yields
Grain
Germplasm
topic Maíz
Híbridos
Rendimiento
Granos
Germoplasma
Maize
Hybrids
Yields
Grain
Germplasm
dc.description.none.fl_txt_mv Kernel set response to plant density was examined in terms of physiological processes underlying kernel set in temperate (Te), tropical (Tr), and temperate × tropical (TeTr) maize (Zea mays L.) hybrids. Four field experiments were performed in a subtropical environment, and treatments combined two new and popular commercial hybrids of each group of germplasm background with five plant densities (2–30 plants m−2). Determinations included plant growth rate (PGRS) and topmost ear growth rate (EGRS) during the period bracketing silking, grain yield, and its components. In all hybrids, kernel number was the main grain yield component contributing to grain yield variations across densities. When grown in a high‐yielding subtropical environment, all hybrids exhibited increased kernel number per area with increasing plant density from 5 to 11 plants m−2. There was not a clear trend among groups of germplasm background in the number of kernel set at each plant density, but distinctive physiological processes underlying kernel number per plant (KNP) were evident between Te and Tr hybrids. Across plant densities, the KNP/PGRS ratio was larger and PGRS was lower in Te than in Tr hybrids. Larger KNP/PGRS in Te than in Tr hybrids were associated with greater prolificacy al low plant density and larger EGRS. In TeTr hybrids instead, there was not a common physiological process underlying kernel set, since genotypes representing this group shared traits similar to those of Te and Tr genotypes.
EEA Balcarce
Fil: Cerrudo, Diego. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.
Fil: Hernández, Mariano. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.
Fil: Tollenaar, Matthijs. The Climate Corp; Estados Unidos
Fil: Vega Claudia Rosa. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Manfredi; Argentina.
Fil: Echarte, Laura. Instituto Nacional de Tecnología Agropecuaria (INTA) Estación Experimental Agropecuaria Balcarce; Argentina Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Argentina.
description Kernel set response to plant density was examined in terms of physiological processes underlying kernel set in temperate (Te), tropical (Tr), and temperate × tropical (TeTr) maize (Zea mays L.) hybrids. Four field experiments were performed in a subtropical environment, and treatments combined two new and popular commercial hybrids of each group of germplasm background with five plant densities (2–30 plants m−2). Determinations included plant growth rate (PGRS) and topmost ear growth rate (EGRS) during the period bracketing silking, grain yield, and its components. In all hybrids, kernel number was the main grain yield component contributing to grain yield variations across densities. When grown in a high‐yielding subtropical environment, all hybrids exhibited increased kernel number per area with increasing plant density from 5 to 11 plants m−2. There was not a clear trend among groups of germplasm background in the number of kernel set at each plant density, but distinctive physiological processes underlying kernel number per plant (KNP) were evident between Te and Tr hybrids. Across plant densities, the KNP/PGRS ratio was larger and PGRS was lower in Te than in Tr hybrids. Larger KNP/PGRS in Te than in Tr hybrids were associated with greater prolificacy al low plant density and larger EGRS. In TeTr hybrids instead, there was not a common physiological process underlying kernel set, since genotypes representing this group shared traits similar to those of Te and Tr genotypes.
publishDate 2020
dc.date.none.fl_str_mv 2020-06-04T11:14:05Z
2020-06-04T11:14:05Z
2020-02-07
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/20.500.12123/7359
https://acsess.onlinelibrary.wiley.com/doi/abs/10.1002/csc2.20077
1435-0653
https://doi.org/10.1002/csc2.20077
url http://hdl.handle.net/20.500.12123/7359
https://acsess.onlinelibrary.wiley.com/doi/abs/10.1002/csc2.20077
https://doi.org/10.1002/csc2.20077
identifier_str_mv 1435-0653
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.publisher.none.fl_str_mv Crop Science Society of America
publisher.none.fl_str_mv Crop Science Society of America
dc.source.none.fl_str_mv Crop Science 60 (1) : 381-390 (2020)
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 13.001348

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