Seed bank, germination and seed longevity of Spanish broom (Spartium junceum, Fabaceae): implications for control.
Seed bank, germination and seed longevity of Spanish broom (Spartium junceum, Fabaceae): implications for control. The Spanish broom (Spartium junceum) is an exotic invader of natural grasslands in southern Buenos Aires mountains. We assessed the density of seeds in the soil seed bank and the percen...
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Sociedad Argentina de Botánica
2014
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I10-R325-article-78222024-09-03T22:47:28Z Seed bank, germination and seed longevity of Spanish broom (Spartium junceum, Fabaceae): implications for control. Banco de semillas, germinación y longevidad de semillas de retama (Spartium junceum, Fabaceae): implicancias para su control. Sanhueza, Cristina Zalba, Sergio Spartium junceum germinación banco de semillas invasión longevidad Spartium junceum germination soil seed bank invasion seeds longevity Seed bank, germination and seed longevity of Spanish broom (Spartium junceum, Fabaceae): implications for control. The Spanish broom (Spartium junceum) is an exotic invader of natural grasslands in southern Buenos Aires mountains. We assessed the density of seeds in the soil seed bank and the percentage of germination in botanic garden experiments for samples obtained from three invaded sites. We performed essays outdoors for soil samples, and in germination chamber for seeds collected directly from plants and for seeds obtained from the soil seven years before the experiment. Seeds density in the soil ranged from 600 to 4411 seeds/m2. Germination percentage for soil samples was 68.33±26.66%. For chamber experiments, mechanical scarification lead to the germination of all the seeds in the case of those collected from the plants, compared to just 7±5.7% for the control and figures even smaller for heath shock and combination of heath shock and mechanical scarification. The experiment with seeds form the soil bank resulted in a percentage of germination of 88.73±11.16% for those seeds previously treated with mechanical scarification, 85.77±10.50% for heath shock, 40.30±10.14% for imbibitions and 43.20±12.01% for the control. Brief exposition to high temperatures, mechanical breakage of the seed cover and soil disturbances significatively favor germination and stimulate invasion La retama (Spartium junceum) es una especie invasora de pastizales naturales en las sierras australes bonaerenses. Estudiamos características del proceso de germinación que resultarían clave para su control. Calculamos densidad de semillas y porcentaje de germinación para muestras de suelo provenientes de sectores invadidos. Realizamos ensayos de germinación en panes de tierra mantenidos a la intemperie y ensayos en cámara de germinación con semillas colectadas directamente del arbusto y otras colectadas del banco del suelo siete años antes del ensayo. La densidad en el banco del suelo de áreas invadidas varió entre 600 y 4.411 semillas/m2. El porcentaje de germinación de semillas de ensayos en panes de tierra fue de 68,33±26,66%. Para los ensayos en cámara, la escarificación mecánica resultó 100% de germinación para semillas recolectadas de las plantas, contra 7±5,7% para el control y valores aún inferiores para shock térmico y combinación shock térmico+escarificación mecánica El ensayo de semillas con más de siete años resultó en un porcentaje de germinación del 88,73±11,16% para la escarificación mecánica, 85,77±10,50% para shock térmico, 40,30±10,14% para imbibición y 43,20±12,01% para el control. Altas temperaturas durante períodos cortos, lesiones en la cubierta seminal y disturbios del suelo favorecen considerablemente la germinación y estimulan los procesos de invasión Sociedad Argentina de Botánica 2014-07-29 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo original application/pdf https://revistas.unc.edu.ar/index.php/BSAB/article/view/7822 10.31055/1851.2372.v49.n1.7822 Boletín de la Sociedad Argentina de Botánica (Journal of the Argentine Botanical Society; Vol. 49 No. 1 (2014): Abril; 67-76 Boletín de la Sociedad Argentina de Botánica; Vol. 49 Núm. 1 (2014): Abril; 67-76 Boletín de la Sociedad Argentina de Botánica; v. 49 n. 1 (2014): Abril; 67-76 1851-2372 0373-580X 10.31055/1851.2372.v49.n1 spa https://revistas.unc.edu.ar/index.php/BSAB/article/view/7822/8692 |
institution |
Universidad Nacional de Córdoba |
institution_str |
I-10 |
repository_str |
R-325 |
container_title_str |
Boletín de la Sociedad Argentina de Botánica |
language |
Español |
format |
Artículo revista |
topic |
Spartium junceum germinación banco de semillas invasión longevidad Spartium junceum germination soil seed bank invasion seeds longevity |
spellingShingle |
Spartium junceum germinación banco de semillas invasión longevidad Spartium junceum germination soil seed bank invasion seeds longevity Sanhueza, Cristina Zalba, Sergio Seed bank, germination and seed longevity of Spanish broom (Spartium junceum, Fabaceae): implications for control. |
topic_facet |
Spartium junceum germinación banco de semillas invasión longevidad Spartium junceum germination soil seed bank invasion seeds longevity |
author |
Sanhueza, Cristina Zalba, Sergio |
author_facet |
Sanhueza, Cristina Zalba, Sergio |
author_sort |
Sanhueza, Cristina |
title |
Seed bank, germination and seed longevity of Spanish broom (Spartium junceum, Fabaceae): implications for control. |
title_short |
Seed bank, germination and seed longevity of Spanish broom (Spartium junceum, Fabaceae): implications for control. |
title_full |
Seed bank, germination and seed longevity of Spanish broom (Spartium junceum, Fabaceae): implications for control. |
title_fullStr |
Seed bank, germination and seed longevity of Spanish broom (Spartium junceum, Fabaceae): implications for control. |
title_full_unstemmed |
Seed bank, germination and seed longevity of Spanish broom (Spartium junceum, Fabaceae): implications for control. |
title_sort |
seed bank, germination and seed longevity of spanish broom (spartium junceum, fabaceae): implications for control. |
description |
Seed bank, germination and seed longevity of Spanish broom (Spartium junceum, Fabaceae): implications for control. The Spanish broom (Spartium junceum) is an exotic invader of natural grasslands in southern Buenos Aires mountains. We assessed the density of seeds in the soil seed bank and the percentage of germination in botanic garden experiments for samples obtained from three invaded sites. We performed essays outdoors for soil samples, and in germination chamber for seeds collected directly from plants and for seeds obtained from the soil seven years before the experiment. Seeds density in the soil ranged from 600 to 4411 seeds/m2. Germination percentage for soil samples was 68.33±26.66%. For chamber experiments, mechanical scarification lead to the germination of all the seeds in the case of those collected from the plants, compared to just 7±5.7% for the control and figures even smaller for heath shock and combination of heath shock and mechanical scarification. The experiment with seeds form the soil bank resulted in a percentage of germination of 88.73±11.16% for those seeds previously treated with mechanical scarification, 85.77±10.50% for heath shock, 40.30±10.14% for imbibitions and 43.20±12.01% for the control. Brief exposition to high temperatures, mechanical breakage of the seed cover and soil disturbances significatively favor germination and stimulate invasion |
publisher |
Sociedad Argentina de Botánica |
publishDate |
2014 |
url |
https://revistas.unc.edu.ar/index.php/BSAB/article/view/7822 |
work_keys_str_mv |
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first_indexed |
2024-09-03T22:49:36Z |
last_indexed |
2024-09-03T22:49:36Z |
_version_ |
1809216990594727936 |