Three levels of simple morphophysiological dormancy in seeds of Ilex (Aquifoliaceae) species from Argentina
As a contribution to understanding the world biogeography of seed dormancy in the cosmopolitan genus Ilex, we studied seeds of I. argentina, I. brasiliensis, I. brevicuspis, I. dumosa, I. paraguariensis and I. theezans from the subtropical region of Argentina. We hypothesized that seeds of these spe...
| Autores principales: | , , , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
| Publicado: |
Cambridge University Press
2024
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/20744 https://www.cambridge.org/core/journals/seed-science-research/article/abs/three-levels-of-simple-morphophysiological-dormancy-in-seeds-of-ilex-aquifoliaceae-species-from-argentina/5C041F7AD7D5D2EE89D923D099635A95 https://doi.org/10.1017/S0960258518000132 |
| _version_ | 1855486637478248448 |
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| author | Galíndez, Guadalupe Ceccato, Diana Valeria Bubillo, Rosana Elizabeth Lindow López, Lucía Malagrina, Gisela Marina Ortega Baes, Francisco Pablo Baskin, Carol C. |
| author_browse | Baskin, Carol C. Bubillo, Rosana Elizabeth Ceccato, Diana Valeria Galíndez, Guadalupe Lindow López, Lucía Malagrina, Gisela Marina Ortega Baes, Francisco Pablo |
| author_facet | Galíndez, Guadalupe Ceccato, Diana Valeria Bubillo, Rosana Elizabeth Lindow López, Lucía Malagrina, Gisela Marina Ortega Baes, Francisco Pablo Baskin, Carol C. |
| author_sort | Galíndez, Guadalupe |
| collection | INTA Digital |
| description | As a contribution to understanding the world biogeography of seed dormancy in the cosmopolitan genus Ilex, we studied seeds of I. argentina, I. brasiliensis, I. brevicuspis, I. dumosa, I. paraguariensis and I. theezans from the subtropical region of Argentina. We hypothesized that seeds of these species have non-deep simple morphophysiological dormancy (MPD). Effects of temperature, cold stratification and gibberellic acid (GA3) on seed germination and embryo growth were tested. Regardless of incubation temperature, little or no germination occurred for any species until ≥6 weeks. There was an up to 3-fold increase in embryo length to seed length (E:S) ratio before seeds germinated, and embryos grew only during warm-stratifying conditions. Seeds of I. brasiliensis, I. brevicuspis and I. theezans had non-deep simple MPD and germinated to ≥80% after 12, 24 and 16 weeks, respectively. Cold stratification increased germination of I. brasiliensis and I. brevicuspis, and GA3 increased the rate but not final germination percentage of I. brasiliensis and I. theezans. Fresh seeds of I. dumosa required 40 weeks of warm stratification to germinate to 53%, while those after-ripened for 2 months germinated to 81% after 30 weeks; this species has intermediate simple MPD. Seeds of I. argentina and I. paraguariensis germinated to 15 and 21%, respectively, after 40 weeks of warm stratification and did not after-ripen or respond to GA3; these seeds have deep simple MPD. This is the first report of intermediate and deep simple MPD that is broken by warm stratification, thereby increasing our knowledge of seed dormancy in Ilex and in subtropical regions. |
| format | Artículo |
| id | INTA20744 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2024 |
| publishDateRange | 2024 |
| publishDateSort | 2024 |
| publisher | Cambridge University Press |
| publisherStr | Cambridge University Press |
| record_format | dspace |
| spelling | INTA207442024-12-26T10:02:57Z Three levels of simple morphophysiological dormancy in seeds of Ilex (Aquifoliaceae) species from Argentina Galíndez, Guadalupe Ceccato, Diana Valeria Bubillo, Rosana Elizabeth Lindow López, Lucía Malagrina, Gisela Marina Ortega Baes, Francisco Pablo Baskin, Carol C. Seed Dormancy Ilex Aquifoliaceae Semillas Dormición Argentina Morfophysiological Dormancy Intraespecific Variability Physical Dormancy Dormición Morfofisiológica Variabilidad Intraespecífica Dormición Física As a contribution to understanding the world biogeography of seed dormancy in the cosmopolitan genus Ilex, we studied seeds of I. argentina, I. brasiliensis, I. brevicuspis, I. dumosa, I. paraguariensis and I. theezans from the subtropical region of Argentina. We hypothesized that seeds of these species have non-deep simple morphophysiological dormancy (MPD). Effects of temperature, cold stratification and gibberellic acid (GA3) on seed germination and embryo growth were tested. Regardless of incubation temperature, little or no germination occurred for any species until ≥6 weeks. There was an up to 3-fold increase in embryo length to seed length (E:S) ratio before seeds germinated, and embryos grew only during warm-stratifying conditions. Seeds of I. brasiliensis, I. brevicuspis and I. theezans had non-deep simple MPD and germinated to ≥80% after 12, 24 and 16 weeks, respectively. Cold stratification increased germination of I. brasiliensis and I. brevicuspis, and GA3 increased the rate but not final germination percentage of I. brasiliensis and I. theezans. Fresh seeds of I. dumosa required 40 weeks of warm stratification to germinate to 53%, while those after-ripened for 2 months germinated to 81% after 30 weeks; this species has intermediate simple MPD. Seeds of I. argentina and I. paraguariensis germinated to 15 and 21%, respectively, after 40 weeks of warm stratification and did not after-ripen or respond to GA3; these seeds have deep simple MPD. This is the first report of intermediate and deep simple MPD that is broken by warm stratification, thereby increasing our knowledge of seed dormancy in Ilex and in subtropical regions. EEA Santa Cruz Fil: Galíndez, Guadalupe. Universidad Nacional de Salta; Argentina. Facultad de Ciencias Naturales. Laboratorio de Investigaciones Botánicas (LABIBO); Argentina. Fil: Galíndez, Guadalupe. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fil: Ceccato, Diana Valeria. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz. Agencia de Extensión Rural San Julián; Argentina. Fil: Bubillo, Rosana Elizabeth. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Cerro Azul. Banco Activo de Germoplasma; Argentina. Fil: Lindow López, Lucía. Universidad Nacional de Salta; Argentina. Facultad de Ciencias Naturales. Laboratorio de Investigaciones Botánicas (LABIBO); Argentina. Fil: Lindow López, Lucía. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fil: Malagrina, Gisela Marina. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Recursos Biológicos. Banco Base de Germoplasma; Argentina. Fil: Ortega Baes, Francisco Pablo. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Laboratorio de Investigaciones Botánicas; Argentina. Fil: Ortega Baes, Francisco Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fil: Baskin, Carol C. University of Kentucky. Department of Biology and Department of Plant and Soil Sciences; Estados Unidos 2024-12-26T09:50:05Z 2024-12-26T09:50:05Z 2018-05-25 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/20744 https://www.cambridge.org/core/journals/seed-science-research/article/abs/three-levels-of-simple-morphophysiological-dormancy-in-seeds-of-ilex-aquifoliaceae-species-from-argentina/5C041F7AD7D5D2EE89D923D099635A95 Galíndez G, Ceccato D, Bubillo R, et al. Three levels of simple morphophysiological dormancy in seeds of Ilex (Aquifoliaceae) species from Argentina. Seed Science Research. 2018;28(2):131-139. doi:10.1017/S0960258518000132 0960-2585 (Print) 1475-2735 (Online) https://doi.org/10.1017/S0960258518000132 eng info:eu-repograntAgreement/INTA/AERG-231221/AR./Conservación ex situ y valoración de las colecciones de germoplasma de la Red de Recursos Genéticos Vegetales de INTA info:eu-repo/semantics/restrictedAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Cambridge University Press Seed Science Research 28 (2) : 131-139. (June 2018) |
| spellingShingle | Seed Dormancy Ilex Aquifoliaceae Semillas Dormición Argentina Morfophysiological Dormancy Intraespecific Variability Physical Dormancy Dormición Morfofisiológica Variabilidad Intraespecífica Dormición Física Galíndez, Guadalupe Ceccato, Diana Valeria Bubillo, Rosana Elizabeth Lindow López, Lucía Malagrina, Gisela Marina Ortega Baes, Francisco Pablo Baskin, Carol C. Three levels of simple morphophysiological dormancy in seeds of Ilex (Aquifoliaceae) species from Argentina |
| title | Three levels of simple morphophysiological dormancy in seeds of Ilex (Aquifoliaceae) species from Argentina |
| title_full | Three levels of simple morphophysiological dormancy in seeds of Ilex (Aquifoliaceae) species from Argentina |
| title_fullStr | Three levels of simple morphophysiological dormancy in seeds of Ilex (Aquifoliaceae) species from Argentina |
| title_full_unstemmed | Three levels of simple morphophysiological dormancy in seeds of Ilex (Aquifoliaceae) species from Argentina |
| title_short | Three levels of simple morphophysiological dormancy in seeds of Ilex (Aquifoliaceae) species from Argentina |
| title_sort | three levels of simple morphophysiological dormancy in seeds of ilex aquifoliaceae species from argentina |
| topic | Seed Dormancy Ilex Aquifoliaceae Semillas Dormición Argentina Morfophysiological Dormancy Intraespecific Variability Physical Dormancy Dormición Morfofisiológica Variabilidad Intraespecífica Dormición Física |
| url | http://hdl.handle.net/20.500.12123/20744 https://www.cambridge.org/core/journals/seed-science-research/article/abs/three-levels-of-simple-morphophysiological-dormancy-in-seeds-of-ilex-aquifoliaceae-species-from-argentina/5C041F7AD7D5D2EE89D923D099635A95 https://doi.org/10.1017/S0960258518000132 |
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