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dc.contributor.author Echarte, Maria Mercedes
dc.contributor.author Puntel, Laila Alejandra
dc.contributor.author Aguirrezábal, Luis Adolfo Nazareno
dc.date.available 2016-01-05T19:12:47Z
dc.date.issued 2013-08-01
dc.identifier.citation Echarte, Maria Mercedes; Puntel, Laila Alejandra; Aguirrezábal, Luis Adolfo Nazareno; Assessment of the critical period for the effect of intercepted solar radiation on sunflower oil fatty acid composition; Elsevier; Field Crops Research; 149; 1-8-2013; 213-222
dc.identifier.issn 0378-4290
dc.identifier.uri http://hdl.handle.net/11336/3339
dc.description.abstract The fatty acid composition of sunflower (Helianthus annuus L.) oil closely depends on the environmental conditions during grain filling. Temperature and solar radiation are the main environmental factors driving oil fatty acid composition. Minimum night temperature and intercepted solar radiation per plant (ISR) during grain filling independently affect oleic acid percentage of traditional sunflower oil. Critical period for temperature effect on this trait has been shown to be placed between 100 and 300ºC day after flowering (ºCd af). The period of maximal sensitivity of fatty acid composition to ISR remains unknown. The aim of the present work was to identify the time window of high sensitivity (critical period) of fatty acid composition to ISR of sunflower oil. For this, ISR was modified by shading (50 or 80%) or thinning (50%) field grown sunflower hybrid DK3820 during different periods of grain filling. The timing of maximal sensitivity of fatty acid composition to source variations at post flowering periods was explored and analyzed by two widely used approaches: i) evaluation of the relative oleic acid percentage under short shading treatments in relation to the control; ii) window-pane analysis of the response of oleic acid percentage to ISR. The first approach provided different critical periods depending on the level of radiation reduction. By the second approach, a developmental interval during which oleic acid was most sensitive to ISR regardless of the radiation level was determined. The critical period began at 350ºCd af and ended at 450ºCd af. Critical period of radiation effect on oleic acid concentration differed from radiation effect on grain weight and oil concentration and from the critical period of temperature effect on oil fatty acid composition. Different critical periods for different traits and specific environmental factors are indicative of the complexity of the interaction between environmental conditions and grain growth and oil synthesis dynamics.
dc.format application/pdf
dc.language.iso eng
dc.publisher Elsevier
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject CRITICAL PERIOD
dc.subject ENVIRONMENTAL FACTORS
dc.subject FATTY ACID COMPOSITION
dc.subject INTERCEPTED SOLAR RADIATION
dc.subject SUNFLOWER
dc.subject.classification Agronomía, reproducción y protección de plantas
dc.subject.classification Agricultura, Silvicultura y Pesca
dc.subject.classification CIENCIAS AGRÍCOLAS
dc.title Assessment of the critical period for the effect of intercepted solar radiation on sunflower oil fatty acid composition
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 149
dc.journal.pagination 213-222
dc.journal.pais Nld
dc.journal.ciudad Amsterdam
dc.description.fil Fil: Echarte, Maria Mercedes. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires. Estación Experimental Agropecuaria Balcarce. Area de Investigación en Agronomía; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata; Argentina
dc.description.fil Fil: Puntel, Laila Alejandra. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata; Argentina
dc.description.fil Fil: Aguirrezábal, Luis Adolfo Nazareno. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias. Departamento de Producción Vegetal; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata; Argentina
dc.journal.title Field Crops Research
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.fcr.2013.05.007
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0378429013001792
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/issn/0378-4290


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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Atribución-NoComercial-SinDerivadas 2.5 Argentina (CC BY-NC-ND 2.5 AR)