Understanding grain yield responses to source-sink ratios during grain filling in wheat and barley under contrasting environments

Autores
Serrago, Roman Augusto; Alzueta, Ignacio; Savin, Roxana; Slafer, Gustavo Ariel
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A better understanding of the effects of different source?sink ratio during the grain filling period on grain growth may be relevant in order to further increase cereal grain yield. The main objective of the present work was to determine the effect of different manipulations of the source?sink ratios in wheat and barley grown at four different environmental conditions on responsiveness of sinks (grain growth and yield) and sources (spike photosynthesis and water soluble carbohydrates in the stems). Four treatments were imposed 7 days after anthesis in two contrasting locations with low- and high-inputs conditions in wheat (cv. Soissons) and barley (cv. Sunrise): they were a control, a treatment removing all the spikelets from the upper half of the spikes (TS), and shadings decreasing incident radiation by 75% on the whole canopy (SW) or only on the leaves (having the top area of the meshes individual holes for each spike to be exposed to solar radiation, SL). As expected grain yield was closely related to grain number per m2. Average grain weight was reduced by shading treatments far more markedly in Sw than in SL. Interestingly, significant amounts of water soluble carbohydrates in the stems remained at maturity in SL and Sw treatments and spike photosynthesis in SL was consistently higher than in the unshaded controls in both species. These results may be an indication that wheat and barley are not source-limited during grain filling and that only when subjected to an extremely severe stress, grain size would be reduced due to lack of enough assimilates available to fill them.
Fil: Serrago, Roman Augusto. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Cátedra de Cerealicultura; Argentina
Fil: Alzueta, Ignacio. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Cátedra de Cerealicultura; Argentina
Fil: Savin, Roxana. Universitat de Lleida. Departament de Producció Vegetal i Ciència Forestal; España. Universitat de Lleida. Agrotecnio; España
Fil: Slafer, Gustavo Ariel. Universitat de Lleida. Departament de Producció Vegetal i Ciència Forestal; España. Institució Catalana de Recerca i Estudis Avancats; España. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina
Materia
Triticum Aestivum
Hordeum Vulgare
Grain Number
Grain Weight
Spike Photosynthesis
Stem Reserves
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/3561
Acceder
id CONICETDig_cb651e5be6076ba9c271e429afefc52f
oai_identifier_str oai:ri.conicet.gov.ar:11336/3561
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Understanding grain yield responses to source-sink ratios during grain filling in wheat and barley under contrasting environmentsSerrago, Roman AugustoAlzueta, IgnacioSavin, RoxanaSlafer, Gustavo ArielTriticum AestivumHordeum VulgareGrain NumberGrain WeightSpike PhotosynthesisStem Reserveshttps://purl.org/becyt/ford/4.1https://purl.org/becyt/ford/4A better understanding of the effects of different source?sink ratio during the grain filling period on grain growth may be relevant in order to further increase cereal grain yield. The main objective of the present work was to determine the effect of different manipulations of the source?sink ratios in wheat and barley grown at four different environmental conditions on responsiveness of sinks (grain growth and yield) and sources (spike photosynthesis and water soluble carbohydrates in the stems). Four treatments were imposed 7 days after anthesis in two contrasting locations with low- and high-inputs conditions in wheat (cv. Soissons) and barley (cv. Sunrise): they were a control, a treatment removing all the spikelets from the upper half of the spikes (TS), and shadings decreasing incident radiation by 75% on the whole canopy (SW) or only on the leaves (having the top area of the meshes individual holes for each spike to be exposed to solar radiation, SL). As expected grain yield was closely related to grain number per m2. Average grain weight was reduced by shading treatments far more markedly in Sw than in SL. Interestingly, significant amounts of water soluble carbohydrates in the stems remained at maturity in SL and Sw treatments and spike photosynthesis in SL was consistently higher than in the unshaded controls in both species. These results may be an indication that wheat and barley are not source-limited during grain filling and that only when subjected to an extremely severe stress, grain size would be reduced due to lack of enough assimilates available to fill them.Fil: Serrago, Roman Augusto. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Cátedra de Cerealicultura; ArgentinaFil: Alzueta, Ignacio. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Cátedra de Cerealicultura; ArgentinaFil: Savin, Roxana. Universitat de Lleida. Departament de Producció Vegetal i Ciència Forestal; España. Universitat de Lleida. Agrotecnio; EspañaFil: Slafer, Gustavo Ariel. Universitat de Lleida. Departament de Producció Vegetal i Ciència Forestal; España. Institució Catalana de Recerca i Estudis Avancats; España. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; ArgentinaElsevier2013-08-20info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/3561Serrago, Roman Augusto; Alzueta, Ignacio; Savin, Roxana; Slafer, Gustavo Ariel; Understanding grain yield responses to source-sink ratios during grain filling in wheat and barley under contrasting environments; Elsevier; Field Crops Research; 150; 20-8-2013; 42-510378-4290enginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.fcr.2013.05.016info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0378429013001986info:eu-repo/semantics/altIdentifier/issn/0378-4290info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:22:42Zoai:ri.conicet.gov.ar:11336/3561instacron: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:34982025-09-29 10:22:42.98CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Understanding grain yield responses to source-sink ratios during grain filling in wheat and barley under contrasting environments
title Understanding grain yield responses to source-sink ratios during grain filling in wheat and barley under contrasting environments
spellingShingle Understanding grain yield responses to source-sink ratios during grain filling in wheat and barley under contrasting environments
Serrago, Roman Augusto
Triticum Aestivum
Hordeum Vulgare
Grain Number
Grain Weight
Spike Photosynthesis
Stem Reserves
title_short Understanding grain yield responses to source-sink ratios during grain filling in wheat and barley under contrasting environments
title_full Understanding grain yield responses to source-sink ratios during grain filling in wheat and barley under contrasting environments
title_fullStr Understanding grain yield responses to source-sink ratios during grain filling in wheat and barley under contrasting environments
title_full_unstemmed Understanding grain yield responses to source-sink ratios during grain filling in wheat and barley under contrasting environments
title_sort Understanding grain yield responses to source-sink ratios during grain filling in wheat and barley under contrasting environments
dc.creator.none.fl_str_mv Serrago, Roman Augusto
Alzueta, Ignacio
Savin, Roxana
Slafer, Gustavo Ariel
author Serrago, Roman Augusto
author_facet Serrago, Roman Augusto
Alzueta, Ignacio
Savin, Roxana
Slafer, Gustavo Ariel
author_role author
author2 Alzueta, Ignacio
Savin, Roxana
Slafer, Gustavo Ariel
author2_role author
author
author
dc.subject.none.fl_str_mv Triticum Aestivum
Hordeum Vulgare
Grain Number
Grain Weight
Spike Photosynthesis
Stem Reserves
topic Triticum Aestivum
Hordeum Vulgare
Grain Number
Grain Weight
Spike Photosynthesis
Stem Reserves
purl_subject.fl_str_mv https://purl.org/becyt/ford/4.1
https://purl.org/becyt/ford/4
dc.description.none.fl_txt_mv A better understanding of the effects of different source?sink ratio during the grain filling period on grain growth may be relevant in order to further increase cereal grain yield. The main objective of the present work was to determine the effect of different manipulations of the source?sink ratios in wheat and barley grown at four different environmental conditions on responsiveness of sinks (grain growth and yield) and sources (spike photosynthesis and water soluble carbohydrates in the stems). Four treatments were imposed 7 days after anthesis in two contrasting locations with low- and high-inputs conditions in wheat (cv. Soissons) and barley (cv. Sunrise): they were a control, a treatment removing all the spikelets from the upper half of the spikes (TS), and shadings decreasing incident radiation by 75% on the whole canopy (SW) or only on the leaves (having the top area of the meshes individual holes for each spike to be exposed to solar radiation, SL). As expected grain yield was closely related to grain number per m2. Average grain weight was reduced by shading treatments far more markedly in Sw than in SL. Interestingly, significant amounts of water soluble carbohydrates in the stems remained at maturity in SL and Sw treatments and spike photosynthesis in SL was consistently higher than in the unshaded controls in both species. These results may be an indication that wheat and barley are not source-limited during grain filling and that only when subjected to an extremely severe stress, grain size would be reduced due to lack of enough assimilates available to fill them.
Fil: Serrago, Roman Augusto. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Cátedra de Cerealicultura; Argentina
Fil: Alzueta, Ignacio. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Cátedra de Cerealicultura; Argentina
Fil: Savin, Roxana. Universitat de Lleida. Departament de Producció Vegetal i Ciència Forestal; España. Universitat de Lleida. Agrotecnio; España
Fil: Slafer, Gustavo Ariel. Universitat de Lleida. Departament de Producció Vegetal i Ciència Forestal; España. Institució Catalana de Recerca i Estudis Avancats; España. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina
description A better understanding of the effects of different source?sink ratio during the grain filling period on grain growth may be relevant in order to further increase cereal grain yield. The main objective of the present work was to determine the effect of different manipulations of the source?sink ratios in wheat and barley grown at four different environmental conditions on responsiveness of sinks (grain growth and yield) and sources (spike photosynthesis and water soluble carbohydrates in the stems). Four treatments were imposed 7 days after anthesis in two contrasting locations with low- and high-inputs conditions in wheat (cv. Soissons) and barley (cv. Sunrise): they were a control, a treatment removing all the spikelets from the upper half of the spikes (TS), and shadings decreasing incident radiation by 75% on the whole canopy (SW) or only on the leaves (having the top area of the meshes individual holes for each spike to be exposed to solar radiation, SL). As expected grain yield was closely related to grain number per m2. Average grain weight was reduced by shading treatments far more markedly in Sw than in SL. Interestingly, significant amounts of water soluble carbohydrates in the stems remained at maturity in SL and Sw treatments and spike photosynthesis in SL was consistently higher than in the unshaded controls in both species. These results may be an indication that wheat and barley are not source-limited during grain filling and that only when subjected to an extremely severe stress, grain size would be reduced due to lack of enough assimilates available to fill them.
publishDate 2013
dc.date.none.fl_str_mv 2013-08-20
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/11336/3561
Serrago, Roman Augusto; Alzueta, Ignacio; Savin, Roxana; Slafer, Gustavo Ariel; Understanding grain yield responses to source-sink ratios during grain filling in wheat and barley under contrasting environments; Elsevier; Field Crops Research; 150; 20-8-2013; 42-51
0378-4290
url http://hdl.handle.net/11336/3561
identifier_str_mv Serrago, Roman Augusto; Alzueta, Ignacio; Savin, Roxana; Slafer, Gustavo Ariel; Understanding grain yield responses to source-sink ratios during grain filling in wheat and barley under contrasting environments; Elsevier; Field Crops Research; 150; 20-8-2013; 42-51
0378-4290
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.fcr.2013.05.016
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0378429013001986
info:eu-repo/semantics/altIdentifier/issn/0378-4290
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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
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score 13.070432

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