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dc.contributor.author
Rondanini, Deborah Paola
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dc.contributor.author
Vilariño, María del Pilar
dc.contributor.author
Roberts, Marcos E.
dc.contributor.author
Polosa, Marina A.
dc.contributor.author
Botto, Javier Francisco
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dc.date.available
2016-02-16T19:58:19Z
dc.date.issued
2014-12
dc.identifier.citation
Rondanini, Deborah Paola; Vilariño, María del Pilar; Roberts, Marcos E.; Polosa, Marina A.; Botto, Javier Francisco; Physiological responses of spring rapeseed (Brassica napus) to red/far-red ratios and irradiance during pre- and post-flowering stages; Wiley; Physiologia Plantarum; 152; 4; 12-2014; 784-794
dc.identifier.issn
0031-9317
dc.identifier.uri
http://hdl.handle.net/11336/4216
dc.description.abstract
Early shade signals promote the shade avoidance syndrome (SAS) which causes, among others, petiole and shoot elongation and upward leaf position. In spite of its relevance, these photomorphogenic responses have not been deeply studied in rapeseed (Brassica napus). In contrast to other crops like maize and wheat, rapeseed has a complex developmental phenotypic pattern as it evolves from an initial rosette to the main stem elongation and an indeterminate growth of floral raceme. In this work, we analyzed (1) morphological and physiological responses at individual level due to low red/far-red (R/FR) ratio during plant development, and (2) changes in biomass allocation, grain yield and composition at crop level in response to high R/FR ratio and low irradiance in two modern spring rapeseed genotypes. We carried out pot and field experiments modifying R/FR ratios and irradiance at vegetative or reproductive stages. In pot experiments, low R/FR ratio increased the petiole and lamina length, upward leaf position and also accelerated leaf senescence. Furthermore, low R/FR ratio reduced main floral raceme and increased floral branching with higher remobilization of soluble carbohydrates from the stems. In field experiments, low irradiance during post-flowering reduced grain yield, harvest index and grain oil content, and high R/FR ratio reaching the crop partially alleviated such effects. We conclude that photomorphogenic signals are integrated early during the vegetative growth, and irradiance has stronger effects than R/FR signals at rapeseed crop level.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Shade Avoidance Responses
dc.subject
Red/Far Red Ratio
dc.subject
Irradiance
dc.subject
Vegetative Plasticity
dc.subject
Branching
dc.subject
Grain Yield
dc.subject.classification
Agricultura
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dc.subject.classification
Agricultura, Silvicultura y Pesca
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dc.subject.classification
CIENCIAS AGRÍCOLAS
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dc.title
Physiological responses of spring rapeseed (Brassica napus) to red/far-red ratios and irradiance during pre- and post-flowering stages
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-03-30 10:35:44.97925-03
dc.journal.volume
152
dc.journal.number
4
dc.journal.pagination
784-794
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
Hoboken
dc.description.fil
Fil: Rondanini, Deborah Paola. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Cátedra de Cerealicultura; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Vilariño, María del Pilar. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Cátedra de Cultivos Industriales; Argentina
dc.description.fil
Fil: Roberts, Marcos E.. Universidad de Buenos Aires. Facultad de Agronomia; Argentina
dc.description.fil
Fil: Polosa, Marina A.. Universidad de Buenos Aires. Facultad de Agronomia; Argentina
dc.description.fil
Fil: Botto, Javier Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina
dc.journal.title
Physiologia Plantarum
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/ppl.12227/abstract
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/issn/0031-9317
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/DOI:10.1111/ppl.12227
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