Size/density compensation in Chloris gayana Kunth cv. Fine Cut subjected to different defoliation regimes

Autores
Martinez Calsina, Luciana; Agnusdei, Monica Graciela; Assuero, Silvia Graciela; Perez, Hector Eduardo
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The study evaluated the plasticity of Chloris gayana Kunth cv. Fine Cut to defoliation in terms of tiller size/density compensation (SDC). Twelve mini‐swards were grown in a greenhouse under non‐limiting water and nutrient availabilities for 188 d. Four defoliation treatments were applied as a factorial arrangement of two defoliation frequencies and intensities: 80L, 80H, 100L and 100H (80 and 100 denote percentage of photosynthetically active radiation intercepted at defoliation; L and H denote stubble LAIs of 0·6 and 1·75, respectively). Tiller density, demography, dry weight, leaf area and volume were determined over the final 77 d of the experiment. SDC was observed across 80H and both 100 treatments. The estimated slope of the relationship between tiller size and density was close to −5/2, the deviation from the −3/2 line proposed for undefoliated swards being related to changes in LAI and tiller leaf area/volume ratio. The most severe defoliation regime, 80L, resulted in a lower tiller population density relative to the compensation line, suggesting that this defoliation management shifted the species beyond its range of phenotypic plasticity. Cumulative herbage production was significantly reduced in 80L. Despite the similar herbage production of 80H and both 100 treatments, the former was the most favourable defoliation regime for optimizing leafiness and productivity.
EEA Famaillá
Fil: Martinez Calsina, Luciana. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Famaillá. Campo Experimental Regional Leales; Argentina
Fil: Agnusdei, Monica Graciela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina
Fil: Assuero, Silvia Graciela. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agriarias; Argentina
Fil: Perez, Hector Eduardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Manfredi; Argentina
Fuente
Grass and Forage Science 67 (2) : 255-262 (June 2012)
Materia
Chloris Gayana
Gramíneas Forrajeras
Defoliación
Etapas de Desarrollo de la Planta
Plasticidad Fenotípica
Feed Grasses
Defoliation
Plant Developmental Stages
Phenotypic Plasticity
Grama Rhodes
Rhodes grass
Nivel de accesibilidad
acceso restringido
Condiciones de uso
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/4654
Acceder
id INTADig_102f1b85953138177e945f5eadee74e0
oai_identifier_str oai:localhost:20.500.12123/4654
network_acronym_str INTADig
repository_id_str l
network_name_str INTA Digital (INTA)
spelling Size/density compensation in Chloris gayana Kunth cv. Fine Cut subjected to different defoliation regimesMartinez Calsina, LucianaAgnusdei, Monica GracielaAssuero, Silvia GracielaPerez, Hector EduardoChloris GayanaGramíneas ForrajerasDefoliaciónEtapas de Desarrollo de la PlantaPlasticidad FenotípicaFeed GrassesDefoliationPlant Developmental StagesPhenotypic PlasticityGrama RhodesRhodes grassThe study evaluated the plasticity of Chloris gayana Kunth cv. Fine Cut to defoliation in terms of tiller size/density compensation (SDC). Twelve mini‐swards were grown in a greenhouse under non‐limiting water and nutrient availabilities for 188 d. Four defoliation treatments were applied as a factorial arrangement of two defoliation frequencies and intensities: 80L, 80H, 100L and 100H (80 and 100 denote percentage of photosynthetically active radiation intercepted at defoliation; L and H denote stubble LAIs of 0·6 and 1·75, respectively). Tiller density, demography, dry weight, leaf area and volume were determined over the final 77 d of the experiment. SDC was observed across 80H and both 100 treatments. The estimated slope of the relationship between tiller size and density was close to −5/2, the deviation from the −3/2 line proposed for undefoliated swards being related to changes in LAI and tiller leaf area/volume ratio. The most severe defoliation regime, 80L, resulted in a lower tiller population density relative to the compensation line, suggesting that this defoliation management shifted the species beyond its range of phenotypic plasticity. Cumulative herbage production was significantly reduced in 80L. Despite the similar herbage production of 80H and both 100 treatments, the former was the most favourable defoliation regime for optimizing leafiness and productivity.EEA FamailláFil: Martinez Calsina, Luciana. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Famaillá. Campo Experimental Regional Leales; ArgentinaFil: Agnusdei, Monica Graciela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; ArgentinaFil: Assuero, Silvia Graciela. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agriarias; ArgentinaFil: Perez, Hector Eduardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Manfredi; ArgentinaWiley2019-03-19T14:00:50Z2019-03-19T14:00:50Z2012-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/4654https://onlinelibrary.wiley.com/doi/10.1111/j.1365-2494.2011.00840.x0142-52421365-2494https://doi.org/10.1111/j.1365-2494.2011.00840.xGrass and Forage Science 67 (2) : 255-262 (June 2012)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/restrictedAccess2025-09-29T13:44:36Zoai:localhost:20.500.12123/4654instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-09-29 13:44:36.658INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Size/density compensation in Chloris gayana Kunth cv. Fine Cut subjected to different defoliation regimes
title Size/density compensation in Chloris gayana Kunth cv. Fine Cut subjected to different defoliation regimes
spellingShingle Size/density compensation in Chloris gayana Kunth cv. Fine Cut subjected to different defoliation regimes
Martinez Calsina, Luciana
Chloris Gayana
Gramíneas Forrajeras
Defoliación
Etapas de Desarrollo de la Planta
Plasticidad Fenotípica
Feed Grasses
Defoliation
Plant Developmental Stages
Phenotypic Plasticity
Grama Rhodes
Rhodes grass
title_short Size/density compensation in Chloris gayana Kunth cv. Fine Cut subjected to different defoliation regimes
title_full Size/density compensation in Chloris gayana Kunth cv. Fine Cut subjected to different defoliation regimes
title_fullStr Size/density compensation in Chloris gayana Kunth cv. Fine Cut subjected to different defoliation regimes
title_full_unstemmed Size/density compensation in Chloris gayana Kunth cv. Fine Cut subjected to different defoliation regimes
title_sort Size/density compensation in Chloris gayana Kunth cv. Fine Cut subjected to different defoliation regimes
dc.creator.none.fl_str_mv Martinez Calsina, Luciana
Agnusdei, Monica Graciela
Assuero, Silvia Graciela
Perez, Hector Eduardo
author Martinez Calsina, Luciana
author_facet Martinez Calsina, Luciana
Agnusdei, Monica Graciela
Assuero, Silvia Graciela
Perez, Hector Eduardo
author_role author
author2 Agnusdei, Monica Graciela
Assuero, Silvia Graciela
Perez, Hector Eduardo
author2_role author
author
author
dc.subject.none.fl_str_mv Chloris Gayana
Gramíneas Forrajeras
Defoliación
Etapas de Desarrollo de la Planta
Plasticidad Fenotípica
Feed Grasses
Defoliation
Plant Developmental Stages
Phenotypic Plasticity
Grama Rhodes
Rhodes grass
topic Chloris Gayana
Gramíneas Forrajeras
Defoliación
Etapas de Desarrollo de la Planta
Plasticidad Fenotípica
Feed Grasses
Defoliation
Plant Developmental Stages
Phenotypic Plasticity
Grama Rhodes
Rhodes grass
dc.description.none.fl_txt_mv The study evaluated the plasticity of Chloris gayana Kunth cv. Fine Cut to defoliation in terms of tiller size/density compensation (SDC). Twelve mini‐swards were grown in a greenhouse under non‐limiting water and nutrient availabilities for 188 d. Four defoliation treatments were applied as a factorial arrangement of two defoliation frequencies and intensities: 80L, 80H, 100L and 100H (80 and 100 denote percentage of photosynthetically active radiation intercepted at defoliation; L and H denote stubble LAIs of 0·6 and 1·75, respectively). Tiller density, demography, dry weight, leaf area and volume were determined over the final 77 d of the experiment. SDC was observed across 80H and both 100 treatments. The estimated slope of the relationship between tiller size and density was close to −5/2, the deviation from the −3/2 line proposed for undefoliated swards being related to changes in LAI and tiller leaf area/volume ratio. The most severe defoliation regime, 80L, resulted in a lower tiller population density relative to the compensation line, suggesting that this defoliation management shifted the species beyond its range of phenotypic plasticity. Cumulative herbage production was significantly reduced in 80L. Despite the similar herbage production of 80H and both 100 treatments, the former was the most favourable defoliation regime for optimizing leafiness and productivity.
EEA Famaillá
Fil: Martinez Calsina, Luciana. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Famaillá. Campo Experimental Regional Leales; Argentina
Fil: Agnusdei, Monica Graciela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina
Fil: Assuero, Silvia Graciela. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agriarias; Argentina
Fil: Perez, Hector Eduardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Manfredi; Argentina
description The study evaluated the plasticity of Chloris gayana Kunth cv. Fine Cut to defoliation in terms of tiller size/density compensation (SDC). Twelve mini‐swards were grown in a greenhouse under non‐limiting water and nutrient availabilities for 188 d. Four defoliation treatments were applied as a factorial arrangement of two defoliation frequencies and intensities: 80L, 80H, 100L and 100H (80 and 100 denote percentage of photosynthetically active radiation intercepted at defoliation; L and H denote stubble LAIs of 0·6 and 1·75, respectively). Tiller density, demography, dry weight, leaf area and volume were determined over the final 77 d of the experiment. SDC was observed across 80H and both 100 treatments. The estimated slope of the relationship between tiller size and density was close to −5/2, the deviation from the −3/2 line proposed for undefoliated swards being related to changes in LAI and tiller leaf area/volume ratio. The most severe defoliation regime, 80L, resulted in a lower tiller population density relative to the compensation line, suggesting that this defoliation management shifted the species beyond its range of phenotypic plasticity. Cumulative herbage production was significantly reduced in 80L. Despite the similar herbage production of 80H and both 100 treatments, the former was the most favourable defoliation regime for optimizing leafiness and productivity.
publishDate 2012
dc.date.none.fl_str_mv 2012-06
2019-03-19T14:00:50Z
2019-03-19T14:00:50Z
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/20.500.12123/4654
https://onlinelibrary.wiley.com/doi/10.1111/j.1365-2494.2011.00840.x
0142-5242
1365-2494
https://doi.org/10.1111/j.1365-2494.2011.00840.x
url http://hdl.handle.net/20.500.12123/4654
https://onlinelibrary.wiley.com/doi/10.1111/j.1365-2494.2011.00840.x
https://doi.org/10.1111/j.1365-2494.2011.00840.x
identifier_str_mv 0142-5242
1365-2494
dc.language.none.fl_str_mv eng
language eng
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 Wiley
publisher.none.fl_str_mv Wiley
dc.source.none.fl_str_mv Grass and Forage Science 67 (2) : 255-262 (June 2012)
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
_version_ 1844619131845869568
score 12.559606

Publicaciones similares