Effect of water availability and seed source on physical dormancy break of Vicia villosa ssp. villosa
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 f...
| Autores principales: | , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
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2018
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| Acceso en línea: | https://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 http://hdl.handle.net/20.500.12123/2312 https://doi.org/10.1017/S096025851600012X |
| _version_ | 1855034940294430720 |
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| author | Renzi Pugni, Juan Pablo Chantre Balacca, Guillermo Ruben Cantamutto, Miguel Angel |
| author_browse | Cantamutto, Miguel Angel Chantre Balacca, Guillermo Ruben Renzi Pugni, Juan Pablo |
| author_facet | Renzi Pugni, Juan Pablo Chantre Balacca, Guillermo Ruben Cantamutto, Miguel Angel |
| author_sort | Renzi Pugni, Juan Pablo |
| collection | INTA Digital |
| description | 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) 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. |
| format | info:ar-repo/semantics/artículo |
| id | INTA2312 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| record_format | dspace |
| spelling | INTA23122018-06-21T14:27:51Z Effect of water availability and seed source on physical dormancy break of Vicia villosa ssp. villosa Renzi Pugni, Juan Pablo Chantre Balacca, Guillermo Ruben Cantamutto, Miguel Angel Vicia Villosa Disponibilidad del Agua Dormición Salida de la Latencia Dormancia de Semillas Water Availability Dormancy Dormancy Breaking Seed Dormancy 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) 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. EEA Hilario Ascasubi Fil: Renzi Pugni, Juan Pablo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Hilario Ascasubi; Argentina. Universidad Nacional del Sur. Departamento de Agronomía; Argentina Fil: 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. Fil: 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. 2018-05-03T11:59:35Z 2018-05-03T11:59:35Z 2016-09 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://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 http://hdl.handle.net/20.500.12123/2312 0960-2585 1475-2735 (Online) https://doi.org/10.1017/S096025851600012X eng info:eu-repo/semantics/restrictedAccess application/pdf Seed science research 26 (3) : 254-263. (September 2016) |
| spellingShingle | Vicia Villosa Disponibilidad del Agua Dormición Salida de la Latencia Dormancia de Semillas Water Availability Dormancy Dormancy Breaking Seed Dormancy Renzi Pugni, Juan Pablo Chantre Balacca, Guillermo Ruben Cantamutto, Miguel Angel Effect of water availability and seed source on physical dormancy break of Vicia villosa ssp. villosa |
| title | Effect of water availability and seed source on physical dormancy break of Vicia villosa ssp. villosa |
| title_full | Effect of water availability and seed source on physical dormancy break of Vicia villosa ssp. villosa |
| title_fullStr | Effect of water availability and seed source on physical dormancy break of Vicia villosa ssp. villosa |
| title_full_unstemmed | Effect of water availability and seed source on physical dormancy break of Vicia villosa ssp. villosa |
| title_short | Effect of water availability and seed source on physical dormancy break of Vicia villosa ssp. villosa |
| title_sort | effect of water availability and seed source on physical dormancy break of vicia villosa ssp villosa |
| topic | Vicia Villosa Disponibilidad del Agua Dormición Salida de la Latencia Dormancia de Semillas Water Availability Dormancy Dormancy Breaking Seed Dormancy |
| url | https://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 http://hdl.handle.net/20.500.12123/2312 https://doi.org/10.1017/S096025851600012X |
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