Shading effects on the yield of an Argentinian wheat cultivar

Shading treatments of 50% of the incident radiation were applied to the semidwarf wheat cultivar Leones INTA before and after anthesis in two field experiments in Argentina in 1987 and 1988. The treatments reduced biological (above-ground dry matter) yield, grain yield and number of grains/m2. Numbe...

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Detalles Bibliográficos
Autores: Savin, Roxana, Slafer, Gustavo A.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:1991
País:España
Institución:Universitat de Lleida (UdL)
Repositorio:Repositori Obert UdL
OAI Identifier:oai:repositori.udl.cat:10459.1/30340
Acceso en línea:https://doi.org/10.1017/S0021859600076085
http://hdl.handle.net/10459.1/30340
Access Level:acceso abierto
Palabra clave:Blat -- Conreu
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spelling Shading effects on the yield of an Argentinian wheat cultivarSavin, RoxanaSlafer, Gustavo A.Blat -- ConreuShading treatments of 50% of the incident radiation were applied to the semidwarf wheat cultivar Leones INTA before and after anthesis in two field experiments in Argentina in 1987 and 1988. The treatments reduced biological (above-ground dry matter) yield, grain yield and number of grains/m2. Number of grains/m2 was closely and linearly correlated with ear dry weight at anthesis and with the photothermal quotient, calculated from 20 days before to 10 days after anthesis. Grain yield was sink limited, and the shading treatments reduced sink strength. The contribution of preanthesis assimilates to grain yield was smaller in the shaded crops than in the unshaded controls; in unshaded crops, almost 40% of grain yield was contributed by preanthesis assimilates whilst in preanthesis shaded crops this contribution was negligible. The proportion of preanthesis assimilates contributed to the grain was closely related to the decrease in stem dry weight during grain filling. The effects of shading on main stems and tillers were the same.Cambridge University Press1991info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttps://doi.org/10.1017/S0021859600076085http://hdl.handle.net/10459.1/30340reponame:Repositori Obert UdL instname:Universitat de Lleida (UdL)InglésReproducció del document publicat a https://doi.org/10.1017/S0021859600076085Journal of Agricultural Science, 1991, vol. 116, núm. 1, p. 1-7(c) Cambridge University Press, 1991info:eu-repo/semantics/openAccessoai:repositori.udl.cat:10459.1/303402026-06-24T12:42:17Z
dc.title.none.fl_str_mv Shading effects on the yield of an Argentinian wheat cultivar
title Shading effects on the yield of an Argentinian wheat cultivar
spellingShingle Shading effects on the yield of an Argentinian wheat cultivar
Savin, Roxana
Blat -- Conreu
title_short Shading effects on the yield of an Argentinian wheat cultivar
title_full Shading effects on the yield of an Argentinian wheat cultivar
title_fullStr Shading effects on the yield of an Argentinian wheat cultivar
title_full_unstemmed Shading effects on the yield of an Argentinian wheat cultivar
title_sort Shading effects on the yield of an Argentinian wheat cultivar
dc.creator.none.fl_str_mv Savin, Roxana
Slafer, Gustavo A.
author Savin, Roxana
author_facet Savin, Roxana
Slafer, Gustavo A.
author_role author
author2 Slafer, Gustavo A.
author2_role author
dc.subject.none.fl_str_mv Blat -- Conreu
topic Blat -- Conreu
description Shading treatments of 50% of the incident radiation were applied to the semidwarf wheat cultivar Leones INTA before and after anthesis in two field experiments in Argentina in 1987 and 1988. The treatments reduced biological (above-ground dry matter) yield, grain yield and number of grains/m2. Number of grains/m2 was closely and linearly correlated with ear dry weight at anthesis and with the photothermal quotient, calculated from 20 days before to 10 days after anthesis. Grain yield was sink limited, and the shading treatments reduced sink strength. The contribution of preanthesis assimilates to grain yield was smaller in the shaded crops than in the unshaded controls; in unshaded crops, almost 40% of grain yield was contributed by preanthesis assimilates whilst in preanthesis shaded crops this contribution was negligible. The proportion of preanthesis assimilates contributed to the grain was closely related to the decrease in stem dry weight during grain filling. The effects of shading on main stems and tillers were the same.
publishDate 1991
dc.date.none.fl_str_mv 1991
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://doi.org/10.1017/S0021859600076085
http://hdl.handle.net/10459.1/30340
url https://doi.org/10.1017/S0021859600076085
http://hdl.handle.net/10459.1/30340
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a https://doi.org/10.1017/S0021859600076085
Journal of Agricultural Science, 1991, vol. 116, núm. 1, p. 1-7
dc.rights.none.fl_str_mv (c) Cambridge University Press, 1991
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Cambridge University Press, 1991
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Cambridge University Press
publisher.none.fl_str_mv Cambridge University Press
dc.source.none.fl_str_mv reponame:Repositori Obert UdL
instname:Universitat de Lleida (UdL)
instname_str Universitat de Lleida (UdL)
reponame_str Repositori Obert UdL
collection Repositori Obert UdL
repository.name.fl_str_mv
repository.mail.fl_str_mv
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