Kernel weight responses to the photothermal environment in maize dent × flint and flint × flint hybrids

Autores
Hisse, Ignacio Ruben; D'andrea, Karina Elizabeth; Otegui, Maria Elena
Año de publicación
2021
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
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 photothermal 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 photothermal 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 photothermal conditions. Results emphasized the importance of the photothermal environment during grain filling on KW determination (particularly for seasons with great photothermal imbalance between filling subphases) as well as the dependency of KW responses on the genetic background.
Fil: Hisse, Ignacio Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal; Argentina
Fil: D'andrea, Karina Elizabeth. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Cátedra de Cerealicultura; Argentina
Fil: Otegui, Maria Elena. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Nacional de Tecnología Agropecuaria; Argentina
Materia
Zea mays
grain weight
kernel type
photo-thermal coefficient
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/147916
Acceder
id CONICETDig_309194a9e8bd6b809a342ab0171beb7a
oai_identifier_str oai:ri.conicet.gov.ar:11336/147916
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Kernel weight responses to the photothermal environment in maize dent × flint and flint × flint hybridsHisse, Ignacio RubenD'andrea, Karina ElizabethOtegui, Maria ElenaZea maysgrain weightkernel typephoto-thermal coefficienthttps://purl.org/becyt/ford/4.1https://purl.org/becyt/ford/4Maize (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 photothermal 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 photothermal 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 photothermal conditions. Results emphasized the importance of the photothermal environment during grain filling on KW determination (particularly for seasons with great photothermal imbalance between filling subphases) as well as the dependency of KW responses on the genetic background.Fil: Hisse, Ignacio Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal; ArgentinaFil: D'andrea, Karina Elizabeth. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Cátedra de Cerealicultura; ArgentinaFil: Otegui, Maria Elena. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Nacional de Tecnología Agropecuaria; ArgentinaCrop Science Society of America2021-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/147916Hisse, Ignacio Ruben; D'andrea, Karina Elizabeth; Otegui, Maria Elena; Kernel weight responses to the photothermal environment in maize dent × flint and flint × flint hybrids; Crop Science Society of America; Crop Science; 61; 3; 2-2021; 1996-20110011-183XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/ 10.1002/csc2.20481info:eu-repo/semantics/altIdentifier/url/https://acsess.onlinelibrary.wiley.com/doi/10.1002/csc2.20481info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:20:44Zoai:ri.conicet.gov.ar:11336/147916instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:20:45.122CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Kernel weight responses to the photothermal environment in maize dent × flint and flint × flint hybrids
title Kernel weight responses to the photothermal environment in maize dent × flint and flint × flint hybrids
spellingShingle Kernel weight responses to the photothermal environment in maize dent × flint and flint × flint hybrids
Hisse, Ignacio Ruben
Zea mays
grain weight
kernel type
photo-thermal coefficient
title_short Kernel weight responses to the photothermal environment in maize dent × flint and flint × flint hybrids
title_full Kernel weight responses to the photothermal environment in maize dent × flint and flint × flint hybrids
title_fullStr Kernel weight responses to the photothermal environment in maize dent × flint and flint × flint hybrids
title_full_unstemmed Kernel weight responses to the photothermal environment in maize dent × flint and flint × flint hybrids
title_sort Kernel weight responses to the photothermal environment in maize dent × flint and flint × flint hybrids
dc.creator.none.fl_str_mv Hisse, Ignacio Ruben
D'andrea, Karina Elizabeth
Otegui, Maria Elena
author Hisse, Ignacio Ruben
author_facet Hisse, Ignacio Ruben
D'andrea, Karina Elizabeth
Otegui, Maria Elena
author_role author
author2 D'andrea, Karina Elizabeth
Otegui, Maria Elena
author2_role author
author
dc.subject.none.fl_str_mv Zea mays
grain weight
kernel type
photo-thermal coefficient
topic Zea mays
grain weight
kernel type
photo-thermal coefficient
purl_subject.fl_str_mv https://purl.org/becyt/ford/4.1
https://purl.org/becyt/ford/4
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 photothermal 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 photothermal 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 photothermal conditions. Results emphasized the importance of the photothermal environment during grain filling on KW determination (particularly for seasons with great photothermal imbalance between filling subphases) as well as the dependency of KW responses on the genetic background.
Fil: Hisse, Ignacio Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal; Argentina
Fil: D'andrea, Karina Elizabeth. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Cátedra de Cerealicultura; Argentina
Fil: Otegui, Maria Elena. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Nacional de Tecnología Agropecuaria; 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 photothermal 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 photothermal 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 photothermal conditions. Results emphasized the importance of the photothermal environment during grain filling on KW determination (particularly for seasons with great photothermal imbalance between filling subphases) as well as the dependency of KW responses on the genetic background.
publishDate 2021
dc.date.none.fl_str_mv 2021-02
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/11336/147916
Hisse, Ignacio Ruben; D'andrea, Karina Elizabeth; Otegui, Maria Elena; Kernel weight responses to the photothermal environment in maize dent × flint and flint × flint hybrids; Crop Science Society of America; Crop Science; 61; 3; 2-2021; 1996-2011
0011-183X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/147916
identifier_str_mv Hisse, Ignacio Ruben; D'andrea, Karina Elizabeth; Otegui, Maria Elena; Kernel weight responses to the photothermal environment in maize dent × flint and flint × flint hybrids; Crop Science Society of America; Crop Science; 61; 3; 2-2021; 1996-2011
0011-183X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/ 10.1002/csc2.20481
info:eu-repo/semantics/altIdentifier/url/https://acsess.onlinelibrary.wiley.com/doi/10.1002/csc2.20481
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
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 reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1846781702004801536
score 12.982451

Publicaciones similares