Disentangling the decrease in R:FR and light intensity on the plant density effect on crop biomass

Background and Aim: The plant density effect on plant biomass is due to a decrease in R:FR and PAR availability per plant. These processes are entangled, as the decrease in R:FR contributes to the decrease in PAR per plant with increasing plant density. This is due to its influence on plant architec...

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Detalles Bibliográficos
Autor: Leigh Urbina, Jorge Eduardo
Tipo de recurso: tesis de maestría
Estado:Versión publicada
Fecha de publicación:2018
País:Chile
OAI Identifier:oai:repositorio.anid.cl:10533/232848
Acceso en línea:https://hdl.handle.net/10533/232848
Access Level:acceso abierto
Palabra clave:Ciencias Agrícolas
Agricultura, Silvicultura, Pesca
Horticultura
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dc.title.es_CL.fl_str_mv Disentangling the decrease in R:FR and light intensity on the plant density effect on crop biomass
dc.title.none.fl_str_mv Disentangling the decrease in r:fr and light intensity on the plant density effect on crop biómass
title Disentangling the decrease in R:FR and light intensity on the plant density effect on crop biomass
spellingShingle Disentangling the decrease in R:FR and light intensity on the plant density effect on crop biomass
Leigh Urbina, Jorge Eduardo
Ciencias Agrícolas
Agricultura, Silvicultura, Pesca
Horticultura
title_short Disentangling the decrease in R:FR and light intensity on the plant density effect on crop biomass
title_full Disentangling the decrease in R:FR and light intensity on the plant density effect on crop biomass
title_fullStr Disentangling the decrease in R:FR and light intensity on the plant density effect on crop biomass
title_full_unstemmed Disentangling the decrease in R:FR and light intensity on the plant density effect on crop biomass
title_sort Disentangling the decrease in R:FR and light intensity on the plant density effect on crop biomass
dc.creator.none.fl_str_mv Leigh Urbina, Jorge Eduardo
author Leigh Urbina, Jorge Eduardo
author_facet Leigh Urbina, Jorge Eduardo
author_role author
dc.contributor.advisor.none.fl_str_mv Marcelis, Leo
Wenqing, Jin
dc.contributor.institution.es_CL.fl_str_mv WAGENINGEN UNIVERSITY
dc.subject.oecd1n.es_CL.fl_str_mv Ciencias Agrícolas
topic Ciencias Agrícolas
Agricultura, Silvicultura, Pesca
Horticultura
dc.subject.oecd2n.es_CL.fl_str_mv Agricultura, Silvicultura, Pesca
dc.subject.oecd3n.es_CL.fl_str_mv Horticultura
description Background and Aim: The plant density effect on plant biomass is due to a decrease in R:FR and PAR availability per plant. These processes are entangled, as the decrease in R:FR contributes to the decrease in PAR per plant with increasing plant density. This is due to its influence on plant architecture, through a positive effect on light absorption, and net photosynthesis. This research aimed to disentangle R:FR and the decrease in PAR per plant to the plant density effect on crop biomass. Methods: An experiment was performed with three plant densities in a climate-room, with RB+FR LEDs. Thus, plant density affected both, R:FR and PAR availability per plant. This was compared to plants grown at the same three densities, but under RB light, without FR. Here, plant density affected only PAR per plant. Results: R:FR decreased with increasing plant density, which was highly correlated with LAI. The amount of absorbed light per plant decreased as R:FR decreased, with the associated negative effect on plant biomass. Without FR light, plant density did not affect the amount of absorbed light per plant, hence neither the biomass per plant. Leaves grown without far-red light had lower, but not statistically significant, net photosynthetic rates. Conclusions: R:FR significantly contributes to the plant density effect on crop biomass due its significant effect on PAR availability per plant. Plant density effects only by a decrease in PAR per plant were not evident at the assessed densities. Keywords R:FR, Decrease in PAR per plant, Plant density, Plant and crop biomass, Light absorption, Net photosynthesis. Abbreviations R:FR: Red to far-red ratio; FR: Far-red light; PAR: Photosynthetically active radiation; RB: Red and blue light. LAI: Leaf area index.
publishDate 2018
dc.date.issued.es_CL.fl_str_mv 2018
dc.date.accessioned.none.fl_str_mv 2019-01-03T13:19:26Z
2022-08-23T12:52:42Z
dc.date.available.none.fl_str_mv 2019-01-03T13:19:26Z
2022-08-23T12:52:42Z
dc.date.embargo.es_CL.fl_str_mv info:eu-repo/date/embargoEnd/2022-08-01
dc.type.none.fl_str_mv Tesis Magíster
dc.type.driver.es_CL.fl_str_mv info:eu-repo/semantics/masterThesis
dc.type.openaire.none.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.tesis.none.fl_str_mv Tesis
format masterThesis
status_str publishedVersion
dc.identifier.folio.es_CL.fl_str_mv 73170964
dc.identifier.uri.none.fl_str_mv https://hdl.handle.net/10533/232848
identifier_str_mv 73170964
url https://hdl.handle.net/10533/232848
dc.relation.none.fl_str_mv instname: Conicyt
reponame: Repositorio Digital RI2.0
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spelling WAGENINGEN UNIVERSITYLeigh Urbina, Jorge Eduardo2018https://hdl.handle.net/10533/232848http://purl.org/coar/access_right/c_abf2HorticulturaAgricultura, Silvicultura, PescaCiencias AgrícolasDisentangling the decrease in R:FR and light intensity on the plant density effect on crop biomassMarcelis, LeoWenqing, JinWAGENINGEN UNIVERSITYHolandaLeigh Urbina, Jorge Eduardo2019-01-03T13:19:26Z2022-08-23T12:52:42Z2019-01-03T13:19:26Z2022-08-23T12:52:42Zinfo:eu-repo/date/embargoEnd/2022-08-012018Background and Aim: The plant density effect on plant biomass is due to a decrease in R:FR and PAR availability per plant. These processes are entangled, as the decrease in R:FR contributes to the decrease in PAR per plant with increasing plant density. This is due to its influence on plant architecture, through a positive effect on light absorption, and net photosynthesis. This research aimed to disentangle R:FR and the decrease in PAR per plant to the plant density effect on crop biomass. Methods: An experiment was performed with three plant densities in a climate-room, with RB+FR LEDs. Thus, plant density affected both, R:FR and PAR availability per plant. This was compared to plants grown at the same three densities, but under RB light, without FR. Here, plant density affected only PAR per plant. Results: R:FR decreased with increasing plant density, which was highly correlated with LAI. The amount of absorbed light per plant decreased as R:FR decreased, with the associated negative effect on plant biomass. Without FR light, plant density did not affect the amount of absorbed light per plant, hence neither the biomass per plant. Leaves grown without far-red light had lower, but not statistically significant, net photosynthetic rates. Conclusions: R:FR significantly contributes to the plant density effect on crop biomass due its significant effect on PAR availability per plant. Plant density effects only by a decrease in PAR per plant were not evident at the assessed densities. Keywords R:FR, Decrease in PAR per plant, Plant density, Plant and crop biomass, Light absorption, Net photosynthesis. Abbreviations R:FR: Red to far-red ratio; FR: Far-red light; PAR: Photosynthetically active radiation; RB: Red and blue light. LAI: Leaf area index.PFCHA-BecasTrabajo de Tesis implementándose en un modelo (FSPM) y está en proceso de publicación.PFCHA-Becas73170964https://hdl.handle.net/10533/232848instname: Conicytreponame: Repositorio Digital RI2.0info:eu-repo/grantAgreement//73170964info:eu-repo/semantics/dataset/hdl.handle.net/10533/93488info:eu-repo/semantics/openAccessCiencias AgrícolasAgricultura, Silvicultura, PescaHorticulturaDisentangling the decrease in R:FR and light intensity on the plant density effect on crop biomassDisentangling the decrease in r:fr and light intensity on the plant density effect on crop biómassTesis Magísterinfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/publishedVersionTesisTesishttps://hdl.handle.net/10533/232848PFCHA-Becasb0029ee2-c537-4f89-94dd-748f99788724virtual::60968-1b0029ee2-c537-4f89-94dd-748f99788724virtual::60968-1ORIGINALJorge Leigh Urbina Msc Thesis.pdfapplication/pdf1464060https://repositorio.anid.cl/bitstreams/9db801be-f24c-4f3c-aed4-a9f7502b9cdb/download30777d270413f804dff0e5d0b07a7ed0MD51CC-LICENSElicense_rdfapplication/octet-stream1232https://repositorio.anid.cl/bitstreams/8061d308-24b5-44e0-9aaa-47b3fff2b4c8/downloadf97bcfdf58f3e17b5cec231112dab5b1MD52LICENSElicense.txttext/plain1779https://repositorio.anid.cl/bitstreams/6fdafbd6-4f7b-47c3-8648-e6637b319a2c/download593a6e7305c66c56041a9f9e15a649c1MD53TEXTJorge Leigh Urbina Msc Thesis.pdf.txtExtracted texttext/plain74300https://repositorio.anid.cl/bitstreams/b0a216b3-5371-4ed4-9717-48ce6a58d3f5/download114f10b1ac5ec02a203a9061e3d27e17MD54THUMBNAILJorge Leigh Urbina Msc Thesis.pdf.jpgIM Thumbnailimage/jpeg4089https://repositorio.anid.cl/bitstreams/f08a9228-08cf-48fc-9206-8037b90d6a3f/downloadc483ed6d93dfbe9ee2fbb9a286d52e5dMD5510533/232848oai:repositorio.anid.cl:10533/2328482023-07-24 15:19:34.482https://repositorio.anid.clRepositorio ANIDaletelier@anid.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