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Abstract
Physical dormancy (PY) plays a crucial role in the control of the reseeding process of Vicia villosa Roth, a winter annual species cultivated for pasture and hay, naturalized in several semi-arid temperate agroecosystems. As PY is considered a seed trait modulated by natural selection, populations from different origins are expected to show different responses to environmental regulatory factors. The present study aimed to determine the effect of: (1) [ver mas...]
dc.contributor.authorRenzi Pugni, Juan Pablo
dc.contributor.authorChantre Balacca, Guillermo Ruben
dc.contributor.authorCantamutto, Miguel Angel
dc.date.accessioned2018-05-03T11:59:35Z
dc.date.available2018-05-03T11:59:35Z
dc.date.issued2016-09
dc.identifier.issn0960-2585
dc.identifier.issn1475-2735 (Online)
dc.identifier.otherhttps://doi.org/10.1017/S096025851600012X
dc.identifier.urihttps://www.cambridge.org/core/journals/seed-science-research/article/effect-of-water-availability-and-seed-source-on-physical-dormancy-break-of-vicia-villosa-ssp-villosa/D289DE12308DCA10813D7A5FFEFC127F
dc.identifier.urihttp://hdl.handle.net/20.500.12123/2312
dc.description.abstractPhysical dormancy (PY) plays a crucial role in the control of the reseeding process of Vicia villosa Roth, a winter annual species cultivated for pasture and hay, naturalized in several semi-arid temperate agroecosystems. As PY is considered a seed trait modulated by natural selection, populations from different origins are expected to show different responses to environmental regulatory factors. The present study aimed to determine the effect of: (1) water availability on PY-break dynamics of a naturalized population from Argentina (ASC) under both laboratory and field conditions; (2) the seed source on initial PY and dormancy release rate (wet storage at 20°C) of ASC compared to 45 other populations of V. villosa, including wild, naturalized, landraces and cultivars. Water availability increased PY loss rate under both storage and field conditions. ASC PY-break dynamics was adequately described by a Gompertz model with a lower thermal-time requirement estimated for dormancy break under fluctuating soil water conditions compared to seeds buried inside impermeable bags. During the field burial experiment, a considerable proportion of seeds (~70%) became water permeable during the summer season after dispersal, and retained low levels of residual PY for soil seed bank replenishment. Improved populations (i.e. breeding cultivars) showed the lowest percentages of initial PY compared to landraces, naturalized and wild populations. Naturalized populations of Argentina showed similar initial PY compared to landraces, although PY release rate was lower in the former and might be attributed to local environmental selection. Wild types showed the lowest PY release rates.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_AR
dc.sourceSeed science research 26 (3) : 254-263. (September 2016)es_AR
dc.subjectVicia Villosaes_AR
dc.subjectDisponibilidad del Aguaes_AR
dc.subjectWater Availabilityeng
dc.subjectDormiciónes_AR
dc.subjectDormancyeng
dc.subjectSalida de la Latenciaes_AR
dc.subjectDormancy Breakingeng
dc.subjectDormancia de Semillases_AR
dc.subjectSeed Dormancyeng
dc.titleEffect of water availability and seed source on physical dormancy break of Vicia villosa ssp. villosaes_AR
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articlees_AR
dc.typeinfo:eu-repo/semantics/publishedVersiones_AR
dc.description.origenEEA Hilario Ascasubies_AR
dc.description.filFil: Renzi Pugni, Juan Pablo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Hilario Ascasubi; Argentina. Universidad Nacional del Sur. Departamento de Agronomía; Argentinaes_AR
dc.description.filFil: Chantre Balacca, Guillermo Ruben. 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 Semiarida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiarida; Argentina.es_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. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiarida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiarida; Argentina.es_AR
dc.subtypecientifico


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