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
- Institución
- Instituto Nacional de Tecnología Agropecuaria
- OAI Identificador
- oai:localhost:20.500.12123/8984
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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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12.982451 |