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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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