Kernel weight responses to the photo-thermal environment in maize dent × flint and flint × flint hybrids

Autores
Hisse, Ignacio R.; D´Andrea, Karina Elizabeth; Otegui, María Elena
Año de publicación
2021
Idioma
inglés
Tipo de recurso
artículo
Estado
versión aceptada
Descripción
Maize (Zea mays, L.) grain yield is assumed to be source limited during the flowering period but sink limited during grain growth; however, environmental restrictions during active grain filling may strongly affect final kernel weight (KW). In this study we evaluated the effect of natural changes in photo‐thermal conditions during lag phase (LP) and effective grain‐filling period (EGFP) on KW, its physiological determinants, and the post‐flowering source‐sink relationships of flint and semident germplasm. F1 hybrids of flint × flint and dent × flint background were tested during four seasons (Y1, Y2, Y3 and Y4). Across years, the highest KW (286 mg) was obtained under the maximum photo‐thermal quotients during LP (PTQLP: 1.18 MJ m−2 °C−1) and EGFP (PTQEGFP: 1.07 MJ m−2 °C−1) of Y2, whereas the smallest KW (252 mg) and source‐sink ratio during grain filling was obtained under the lowest PTQEGFP (.79 MJ m−2 °C−1) of Y3. Supra‐optimum temperatures during LP of Y3 negatively affected potential KW determination, and hence kernel growth rate (P < .001) as a result of reduced assimilate availability per kernel. Hybrids dent × flint exhibited higher grain yield, kernel number and plant growth around flowering than flint × flint throughout evaluated seasons, but had reduced source‐sink relationship during grain filling (P < .05) and increased KW sensitivity (P < .001) to changes in the photo‐thermal conditions. Results emphasized the importance of the photo‐thermal environment during grain filling on KW determination (particularly for seasons with great photo‐thermal imbalance between filling sub‐phases) as well as the dependency of KW responses on the genetic background.
EEA Pergamino
Fil: Hisse, Ignacio R. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal; Argentina
Fil: Hisse, Ignacio R. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: D'Andrea, Karina Elizabeth. Consejo Nacional de Investigaciones, Científicas y Técnicas; Argentina
Fil: D´Andrea, Karina Elizabeth. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal; Argentina
Fil: Otegui, María Elena. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Ecofisiología; Argentina
Fil: Otegui, María Elena. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal; Argentina
Fil: Otegui, María Elena. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
Fuente
Crop Science 61 : 1-44. ( 2021)
Materia
Maíz
Peso
Granos
Híbridos
Rendimiento
Factores Ambientales
Floración
Maize
Weight
Grain
Hybrids
Yields
Environmental Factors
Flowering
Nivel de accesibilidad
acceso restringido
Condiciones de uso
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/8984
Acceder
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oai_identifier_str oai:localhost:20.500.12123/8984
network_acronym_str INTADig
repository_id_str l
network_name_str INTA Digital (INTA)
spelling Kernel weight responses to the photo-thermal environment in maize dent × flint and flint × flint hybridsHisse, Ignacio R.D´Andrea, Karina ElizabethOtegui, María ElenaMaízPesoGranosHíbridosRendimientoFactores AmbientalesFloraciónMaizeWeightGrainHybridsYieldsEnvironmental FactorsFloweringMaize (Zea mays, L.) grain yield is assumed to be source limited during the flowering period but sink limited during grain growth; however, environmental restrictions during active grain filling may strongly affect final kernel weight (KW). In this study we evaluated the effect of natural changes in photo‐thermal conditions during lag phase (LP) and effective grain‐filling period (EGFP) on KW, its physiological determinants, and the post‐flowering source‐sink relationships of flint and semident germplasm. F1 hybrids of flint × flint and dent × flint background were tested during four seasons (Y1, Y2, Y3 and Y4). Across years, the highest KW (286 mg) was obtained under the maximum photo‐thermal quotients during LP (PTQLP: 1.18 MJ m−2 °C−1) and EGFP (PTQEGFP: 1.07 MJ m−2 °C−1) of Y2, whereas the smallest KW (252 mg) and source‐sink ratio during grain filling was obtained under the lowest PTQEGFP (.79 MJ m−2 °C−1) of Y3. Supra‐optimum temperatures during LP of Y3 negatively affected potential KW determination, and hence kernel growth rate (P < .001) as a result of reduced assimilate availability per kernel. Hybrids dent × flint exhibited higher grain yield, kernel number and plant growth around flowering than flint × flint throughout evaluated seasons, but had reduced source‐sink relationship during grain filling (P < .05) and increased KW sensitivity (P < .001) to changes in the photo‐thermal conditions. Results emphasized the importance of the photo‐thermal environment during grain filling on KW determination (particularly for seasons with great photo‐thermal imbalance between filling sub‐phases) as well as the dependency of KW responses on the genetic background.EEA PergaminoFil: Hisse, Ignacio R. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal; ArgentinaFil: Hisse, Ignacio R. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: D'Andrea, Karina Elizabeth. Consejo Nacional de Investigaciones, Científicas y Técnicas; ArgentinaFil: D´Andrea, Karina Elizabeth. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal; ArgentinaFil: Otegui, María Elena. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Ecofisiología; ArgentinaFil: Otegui, María Elena. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal; ArgentinaFil: Otegui, María Elena. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.American Society of Agronomyinfo:eu-repo/date/embargoEnd/2022-03-262021-03-26T16:12:25Z2021-03-26T16:12:25Z2021-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/8984https://acsess.onlinelibrary.wiley.com/doi/abs/10.1002/csc2.204811435-0653 (online)https://doi.org/10.1002/csc2.20481Crop Science 61 : 1-44. ( 2021)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repograntAgreement/INTA/PNCYO-1127042/AR./Bases ecofisiológicas para el mejoramiento genético y la calidad diferenciada de cereales y oleaginosas.info:eu-repo/semantics/restrictedAccess2025-10-23T11:17:32Zoai:localhost:20.500.12123/8984instacron: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 11:17:32.629INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Kernel weight responses to the photo-thermal environment in maize dent × flint and flint × flint hybrids
title Kernel weight responses to the photo-thermal environment in maize dent × flint and flint × flint hybrids
spellingShingle Kernel weight responses to the photo-thermal environment in maize dent × flint and flint × flint hybrids
Hisse, Ignacio R.
Maíz
Peso
Granos
Híbridos
Rendimiento
Factores Ambientales
Floración
Maize
Weight
Grain
Hybrids
Yields
Environmental Factors
Flowering
title_short Kernel weight responses to the photo-thermal environment in maize dent × flint and flint × flint hybrids
title_full Kernel weight responses to the photo-thermal environment in maize dent × flint and flint × flint hybrids
title_fullStr Kernel weight responses to the photo-thermal environment in maize dent × flint and flint × flint hybrids
title_full_unstemmed Kernel weight responses to the photo-thermal environment in maize dent × flint and flint × flint hybrids
title_sort Kernel weight responses to the photo-thermal environment in maize dent × flint and flint × flint hybrids
dc.creator.none.fl_str_mv Hisse, Ignacio R.
D´Andrea, Karina Elizabeth
Otegui, María Elena
author Hisse, Ignacio R.
author_facet Hisse, Ignacio R.
D´Andrea, Karina Elizabeth
Otegui, María Elena
author_role author
author2 D´Andrea, Karina Elizabeth
Otegui, María Elena
author2_role author
author
dc.subject.none.fl_str_mv Maíz
Peso
Granos
Híbridos
Rendimiento
Factores Ambientales
Floración
Maize
Weight
Grain
Hybrids
Yields
Environmental Factors
Flowering
topic Maíz
Peso
Granos
Híbridos
Rendimiento
Factores Ambientales
Floración
Maize
Weight
Grain
Hybrids
Yields
Environmental Factors
Flowering
dc.description.none.fl_txt_mv Maize (Zea mays, L.) grain yield is assumed to be source limited during the flowering period but sink limited during grain growth; however, environmental restrictions during active grain filling may strongly affect final kernel weight (KW). In this study we evaluated the effect of natural changes in photo‐thermal conditions during lag phase (LP) and effective grain‐filling period (EGFP) on KW, its physiological determinants, and the post‐flowering source‐sink relationships of flint and semident germplasm. F1 hybrids of flint × flint and dent × flint background were tested during four seasons (Y1, Y2, Y3 and Y4). Across years, the highest KW (286 mg) was obtained under the maximum photo‐thermal quotients during LP (PTQLP: 1.18 MJ m−2 °C−1) and EGFP (PTQEGFP: 1.07 MJ m−2 °C−1) of Y2, whereas the smallest KW (252 mg) and source‐sink ratio during grain filling was obtained under the lowest PTQEGFP (.79 MJ m−2 °C−1) of Y3. Supra‐optimum temperatures during LP of Y3 negatively affected potential KW determination, and hence kernel growth rate (P < .001) as a result of reduced assimilate availability per kernel. Hybrids dent × flint exhibited higher grain yield, kernel number and plant growth around flowering than flint × flint throughout evaluated seasons, but had reduced source‐sink relationship during grain filling (P < .05) and increased KW sensitivity (P < .001) to changes in the photo‐thermal conditions. Results emphasized the importance of the photo‐thermal environment during grain filling on KW determination (particularly for seasons with great photo‐thermal imbalance between filling sub‐phases) as well as the dependency of KW responses on the genetic background.
EEA Pergamino
Fil: Hisse, Ignacio R. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal; Argentina
Fil: Hisse, Ignacio R. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: D'Andrea, Karina Elizabeth. Consejo Nacional de Investigaciones, Científicas y Técnicas; Argentina
Fil: D´Andrea, Karina Elizabeth. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal; Argentina
Fil: Otegui, María Elena. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Ecofisiología; Argentina
Fil: Otegui, María Elena. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal; Argentina
Fil: Otegui, María Elena. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
description Maize (Zea mays, L.) grain yield is assumed to be source limited during the flowering period but sink limited during grain growth; however, environmental restrictions during active grain filling may strongly affect final kernel weight (KW). In this study we evaluated the effect of natural changes in photo‐thermal conditions during lag phase (LP) and effective grain‐filling period (EGFP) on KW, its physiological determinants, and the post‐flowering source‐sink relationships of flint and semident germplasm. F1 hybrids of flint × flint and dent × flint background were tested during four seasons (Y1, Y2, Y3 and Y4). Across years, the highest KW (286 mg) was obtained under the maximum photo‐thermal quotients during LP (PTQLP: 1.18 MJ m−2 °C−1) and EGFP (PTQEGFP: 1.07 MJ m−2 °C−1) of Y2, whereas the smallest KW (252 mg) and source‐sink ratio during grain filling was obtained under the lowest PTQEGFP (.79 MJ m−2 °C−1) of Y3. Supra‐optimum temperatures during LP of Y3 negatively affected potential KW determination, and hence kernel growth rate (P < .001) as a result of reduced assimilate availability per kernel. Hybrids dent × flint exhibited higher grain yield, kernel number and plant growth around flowering than flint × flint throughout evaluated seasons, but had reduced source‐sink relationship during grain filling (P < .05) and increased KW sensitivity (P < .001) to changes in the photo‐thermal conditions. Results emphasized the importance of the photo‐thermal environment during grain filling on KW determination (particularly for seasons with great photo‐thermal imbalance between filling sub‐phases) as well as the dependency of KW responses on the genetic background.
publishDate 2021
dc.date.none.fl_str_mv 2021-03-26T16:12:25Z
2021-03-26T16:12:25Z
2021-02
info:eu-repo/date/embargoEnd/2022-03-26
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/20.500.12123/8984
https://acsess.onlinelibrary.wiley.com/doi/abs/10.1002/csc2.20481
1435-0653 (online)
https://doi.org/10.1002/csc2.20481
url http://hdl.handle.net/20.500.12123/8984
https://acsess.onlinelibrary.wiley.com/doi/abs/10.1002/csc2.20481
https://doi.org/10.1002/csc2.20481
identifier_str_mv 1435-0653 (online)
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repograntAgreement/INTA/PNCYO-1127042/AR./Bases ecofisiológicas para el mejoramiento genético y la calidad diferenciada de cereales y oleaginosas.
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 American Society of Agronomy
publisher.none.fl_str_mv American Society of Agronomy
dc.source.none.fl_str_mv Crop Science 61 : 1-44. ( 2021)
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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