Show simple item record

resumen

Abstract
Bird attack is a serious limitation to sunflower yield in several regions of the world, but it could also cause selection. The wild Helianthus annuus, naturalized in several regions of the world, hybridizes with the crop and produces crop–wild offspring. It is unknown how the selective force of seed predation by birds could drive evolution after a hybridization event. After two generations of natural selection exerted by birds (mostly by Eared Dove and [ver mas...]
dc.contributor.authorPresotto, Alejandro Daniel
dc.contributor.authorPandolfo, Claudio Ezequiel
dc.contributor.authorPoverene, Maria Monica
dc.contributor.authorCantamutto, Miguel Angel
dc.date.accessioned2018-06-12T18:14:36Z
dc.date.available2018-06-12T18:14:36Z
dc.date.issued2016-04
dc.identifier.issn0014-2336
dc.identifier.issn1573-5060 (Online)
dc.identifier.otherhttps://doi.org/10.1007/s10681-015-1579-9
dc.identifier.urihttp://hdl.handle.net/20.500.12123/2607
dc.identifier.urihttps://link.springer.com/article/10.1007/s10681-015-1579-9
dc.description.abstractBird attack is a serious limitation to sunflower yield in several regions of the world, but it could also cause selection. The wild Helianthus annuus, naturalized in several regions of the world, hybridizes with the crop and produces crop–wild offspring. It is unknown how the selective force of seed predation by birds could drive evolution after a hybridization event. After two generations of natural selection exerted by birds (mostly by Eared Dove and Monk Parakeets), achene and plant traits of the crop–wild hybrid progeny were compared with the same hybrid progeny without any selection by birds. After two generations of bird selection the achene width, thickness and weight decreased by an average of 18.5, 26.7 and 49.2 %, respectively. Also in response to bird selection there was a correlated increase in the plant height, stem diameter, number of heads and a reduction in head diameter and the number of achenes per head. The phenotype of crop–wild plants selected by birds resembles wild plants, whereas the plants without any selection were intermediate between the parents. These results indicate that selection exerted by birds could result in the rapid evolution of crop–wild sunflower populations.eng
dc.formatapplication/pdfeng
dc.language.isoenges_AR
dc.rightsinfo:eu-repo/semantics/restrictedAccesseng
dc.sourceEuphytica 208 (3) : 453–462. (2016)es_AR
dc.subjectHelianthus Annuuses_AR
dc.subjectPájaros Pepredadoreses_AR
dc.subjectFenotiposes_AR
dc.subjectPhenotypeseng
dc.subjectPredatory Birds
dc.subject.otherGirasoles_AR
dc.subject.otherSunflowereng
dc.titleCan achene selection in sunflower crop–wild hybrids by pre-dispersal seed predators hasten the return to phenotypically wild sunflowerseng
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.description.filFil: Presotto, Alejandro Daniel. Universidad Nacional del Sur. Departamento de Agronomía. Laboratorio de Genética y Mejoramiento; Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentinaes_AR
dc.description.filFil: Pandolfo, Claudio Ezequiel. Universidad Nacional del Sur. Departamento de Agronomía; Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentinaes_AR
dc.description.filFil: Poverene, Maria Monica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina; Universidad Nacional del Sur. Departamento de Agronomía; Argentinaes_AR
dc.description.filFil: Cantamutto, Miguel Angel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Hilario Ascasubi; Argentina. Universidad Nacional del Sur. Departamento de Agronomía; Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas; Argentinaes_AR
dc.subtypecientifico


Files in this item

Thumbnail

This item appears in the following Collection(s)

common

Show simple item record