dc.creatorRenzi Pugni, Juan Pablo
dc.creatorChantre Balacca, Guillermo Ruben
dc.creatorCantamutto, Miguel Angel
dc.date.accessioned2018-05-03T11:59:35Z
dc.date.accessioned2023-03-15T13:54:04Z
dc.date.available2018-05-03T11:59:35Z
dc.date.available2023-03-15T13:54:04Z
dc.date.created2018-05-03T11:59:35Z
dc.date.issued2016-09
dc.identifier0960-2585
dc.identifier1475-2735 (Online)
dc.identifierhttps://doi.org/10.1017/S096025851600012X
dc.identifierhttps://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.identifierhttp://hdl.handle.net/20.500.12123/2312
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/6205589
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.
dc.languageeng
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.sourceSeed science research 26 (3) : 254-263. (September 2016)
dc.subjectVicia Villosa
dc.subjectDisponibilidad del Agua
dc.subjectDormición
dc.subjectSalida de la Latencia
dc.subjectDormancia de Semillas
dc.subjectWater Availability
dc.subjectDormancy
dc.subjectDormancy Breaking
dc.subjectSeed Dormancy
dc.titleEffect of water availability and seed source on physical dormancy break of Vicia villosa ssp. villosa
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion


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