Physical dormancy and ex situ seed conservation of Amburana cearensis and Myroxylon peruiferum (Fabaceae).
Physical dormancy and ex situ seed conservation of Amburana cearensis and Myroxylon peruiferum (Fabaceae). Amburana cearensis and Myroxylon peruiferum are two native species from northwestern Argentina that are threatened by exploitation for their wood, making it a priority to establish programs of...
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Sociedad Argentina de Botánica
2015
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Acceso en línea: | https://revistas.unc.edu.ar/index.php/BSAB/article/view/11660 |
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I10-R10-article-116602020-03-09T19:13:15Z Physical dormancy and ex situ seed conservation of Amburana cearensis and Myroxylon peruiferum (Fabaceae). Dormición física y conservación ex situ de semillas de Amburana cearensis y Myroxylon peruiferum (Fabaceae) Galíndez, Guadalupe Malagrina, Gisela Ceccato, Diana Ledesma, Tilda Lindow- López, Lucía Ortega Baes, Pablo Amburana cearensis conservación ex situ dormición física Myroxylon peruiferum quina colorada roble del país. Amburana cearensis seeds conservation physical dormancy Myroxylon peruiferum quina colorada roble del país. Physical dormancy and ex situ seed conservation of Amburana cearensis and Myroxylon peruiferum (Fabaceae). Amburana cearensis and Myroxylon peruiferum are two native species from northwestern Argentina that are threatened by exploitation for their wood, making it a priority to establish programs of plant production, restoration ecology and conservation. However, one obstacle for such programs is the occurrence of seed dormancy. The objectives of this study were to determine the presence of physical seed dormancy, possible methods for breaking dormancy, the seed storage behaviour and to assess the dormancy status after seed storage in both species. The seeds of A. cearensis showed physical dormancy and mechanical and chemical scarification were effective methods for breaking seed dormancy. M. peruiferum seeds showed no physical dormancy. A. cearensis produced orthodox seeds, thus they can be preserved in genebanks, while seeds of M. peruiferum were sensitive to desiccation and storage at -18°C. After a year of dry storage, a high proportion of A. cearensis seeds were able to germinate (i.e. physical dormancy levels had reduced). These results will be useful for plant production in the greenhouse, reforestation ecology and in situ and ex situ conservation programs of these two species. Amburana cearensis y Myroxylon peruiferum son dos especies nativas del noroeste argentino que se encuentran amenazadas por la explotación de su madera, siendo prioritario establecer programas de manejo, restauración ecológica y conservación. La presencia de dormición física en semillas dificulta su utilización en dichos programas. Los objetivos de este trabajo fueron determinar la presencia de dormición física, los métodos de salida de dormición y el comportamiento durante el almacenamiento en semillas de ambas especies. Las semillas de A. cearensis presentaron dormición física y la escarificación mecánica y química fueron los mejores métodos para la salida de dormición de las semillas. Las semillas de M. peruiferum no presentaron dormición física. Las semillas de A. cearensis produjeron semillas con comportamiento ortodoxo, por lo que pueden ser conservadas en bancos de germoplasma, mientras que las semillas de M. peruiferum fueron sensibles a la desecación y al almacenamiento a -18ºC. Estos resultados serán de utilidad para el uso de estas especies en programas de producción de plantas en invernáculo, reforestación, restauración y conservación ex situ en bancos de germoplasma. Sociedad Argentina de Botánica 2015-07-07 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo original application/pdf https://revistas.unc.edu.ar/index.php/BSAB/article/view/11660 Boletín de la Sociedad Argentina de Botánica (Journal of the Argentine Botanical Society; Vol. 50 No. 2 (2015): Junio; 153-161 Boletín de la Sociedad Argentina de Botánica; Vol. 50 Núm. 2 (2015): Junio; 153-161 Boletín de la Sociedad Argentina de Botánica; v. 50 n. 2 (2015): Junio; 153-161 1851-2372 0373-580X 10.31055/1851.2372.v50.n2 spa https://revistas.unc.edu.ar/index.php/BSAB/article/view/11660/12070 Derechos de autor 2015 Boletín de la Sociedad Argentina de Botánica |
institution |
Universidad Nacional de Córdoba |
institution_str |
I-10 |
repository_str |
R-10 |
container_title_str |
Revistas de la UNC |
language |
Español |
format |
Artículo revista |
topic |
Amburana cearensis conservación ex situ dormición física Myroxylon peruiferum quina colorada roble del país. Amburana cearensis seeds conservation physical dormancy Myroxylon peruiferum quina colorada roble del país. |
spellingShingle |
Amburana cearensis conservación ex situ dormición física Myroxylon peruiferum quina colorada roble del país. Amburana cearensis seeds conservation physical dormancy Myroxylon peruiferum quina colorada roble del país. Galíndez, Guadalupe Malagrina, Gisela Ceccato, Diana Ledesma, Tilda Lindow- López, Lucía Ortega Baes, Pablo Physical dormancy and ex situ seed conservation of Amburana cearensis and Myroxylon peruiferum (Fabaceae). |
topic_facet |
Amburana cearensis conservación ex situ dormición física Myroxylon peruiferum quina colorada roble del país. Amburana cearensis seeds conservation physical dormancy Myroxylon peruiferum quina colorada roble del país. |
author |
Galíndez, Guadalupe Malagrina, Gisela Ceccato, Diana Ledesma, Tilda Lindow- López, Lucía Ortega Baes, Pablo |
author_facet |
Galíndez, Guadalupe Malagrina, Gisela Ceccato, Diana Ledesma, Tilda Lindow- López, Lucía Ortega Baes, Pablo |
author_sort |
Galíndez, Guadalupe |
title |
Physical dormancy and ex situ seed conservation of Amburana cearensis and Myroxylon peruiferum (Fabaceae). |
title_short |
Physical dormancy and ex situ seed conservation of Amburana cearensis and Myroxylon peruiferum (Fabaceae). |
title_full |
Physical dormancy and ex situ seed conservation of Amburana cearensis and Myroxylon peruiferum (Fabaceae). |
title_fullStr |
Physical dormancy and ex situ seed conservation of Amburana cearensis and Myroxylon peruiferum (Fabaceae). |
title_full_unstemmed |
Physical dormancy and ex situ seed conservation of Amburana cearensis and Myroxylon peruiferum (Fabaceae). |
title_sort |
physical dormancy and ex situ seed conservation of amburana cearensis and myroxylon peruiferum (fabaceae). |
description |
Physical dormancy and ex situ seed conservation of Amburana cearensis and Myroxylon peruiferum (Fabaceae). Amburana cearensis and Myroxylon peruiferum are two native species from northwestern Argentina that are threatened by exploitation for their wood, making it a priority to establish programs of plant production, restoration ecology and conservation. However, one obstacle for such programs is the occurrence of seed dormancy. The objectives of this study were to determine the presence of physical seed dormancy, possible methods for breaking dormancy, the seed storage behaviour and to assess the dormancy status after seed storage in both species. The seeds of A. cearensis showed physical dormancy and mechanical and chemical scarification were effective methods for breaking seed dormancy. M. peruiferum seeds showed no physical dormancy. A. cearensis produced orthodox seeds, thus they can be preserved in genebanks, while seeds of M. peruiferum were sensitive to desiccation and storage at -18°C. After a year of dry storage, a high proportion of A. cearensis seeds were able to germinate (i.e. physical dormancy levels had reduced). These results will be useful for plant production in the greenhouse, reforestation ecology and in situ and ex situ conservation programs of these two species. |
publisher |
Sociedad Argentina de Botánica |
publishDate |
2015 |
url |
https://revistas.unc.edu.ar/index.php/BSAB/article/view/11660 |
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first_indexed |
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2022-08-20T01:20:26Z |
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