EVALUACIÓN DE LA ESTABILIDAD Y VIABILIDAD POLÍNICA EN FLORA AUTÓCTONA, ENDÉMICA Y AMENAZADA DE ANDALUCÍA
Archivos
NO SE HA AUTORIZADO la consulta de los documentos asociados
Fecha
2021-12-17
Autores
Título de la revista
ISSN de la revista
Título del volumen
Editor
Jaén: Universidad de Jaén
Resumen
[ES] Actualmente el proceso natural y continuo de pérdida de Biodiversidad se encuentra intensificado y acelerado, en gran parte por la acción humana. La Península Ibérica, y Andalucía en concreto, por la riqueza de hábitats que ofrecen, poseen una alta biodiversidad vegetal, albergando multitud de endemismos, algunos de los cuales corren un serio peligro de extinción. En este estudio se evalúa un aspecto de la biología de la reproducción de plantas que es clave para la conservación de la flora endémica y amenazada: la viabilidad polínica. Así, seis taxones endémicos de la Península Ibérica, la mayoría de ellos con gran parte de sus poblaciones naturales en Andalucía, y considerados como especies amenazadas, fueron sometidos a diferentes pruebas de viabilidad polínica. Los taxones escogidos fueron Digitalis obscura subsp. obscura, Digitalis mariana subsp. mariana, Digitalis mariana subsp. heywoodii, Aquilegia pyrenaica subsp. cazorlensis, Viola cazorlensis y Anthyllis rupestris, y las pruebas a las que se sometieron fueron los tests de germinación, cloruro de tetrazolio (TTC), reacción
florocromática (FCR) y acetocarmín. El estudio comparativo sobre los resultados de las diferentes pruebas de viabilidad permitió diferenciar su eficiencia para cuantificar la viabilidad polínica y detectar su adecuación para los distintos taxones, además de evidenciar diferencias en la viabilidad polínica entre diferentes taxones endémicos y amenazados. La información obtenida permitiría aumentar la eficiencia de las técnicas de conservación aplicadas a estas especies.
[EN] Currently the natural and continuous process of loss of Biodiversity is intensified and accelerated, to a large extent by human action. The Iberian Peninsula, and Andalusia in particular, due to the richness of habitats they offer, are home to a great plant biodiversity, harboring a high rate of endemic species, some of which are in serious danger of extinction. This study evaluates an aspect of plant reproduction biology that is key to the conservation of endemic and threatened flora: pollen viability. Thus, six endemic taxa of the Iberian Peninsula, which populations are mainly placed in Andalusia, and categorized as threatened plants, were subjected to different pollen viability tests. The chosen taxa were Digitalis obscura subsp. obscura, DigItalis mariana subsp. mariana, Digitalis mariana subsp. heywoodii, Aquilegia pyrenaica subsp. cazorlensis, Viola cazorlensis and Anthyllis rupestris, and the tests to which they were subjected were the germination tests, tetrazolium chloride (TTC), florochromatic reaction (FCR) and acetocarmine. The comparative study on the results of the different viability tests made it possible to differentiate their efficiency to quantify pollen viability and detect their suitability for the different taxa, in addition to showing differences in pollen viability between different endemic and threatened taxa. The information obtained would make it possible to increase the efficiency of the conservation techniques applied to these species.
[EN] Currently the natural and continuous process of loss of Biodiversity is intensified and accelerated, to a large extent by human action. The Iberian Peninsula, and Andalusia in particular, due to the richness of habitats they offer, are home to a great plant biodiversity, harboring a high rate of endemic species, some of which are in serious danger of extinction. This study evaluates an aspect of plant reproduction biology that is key to the conservation of endemic and threatened flora: pollen viability. Thus, six endemic taxa of the Iberian Peninsula, which populations are mainly placed in Andalusia, and categorized as threatened plants, were subjected to different pollen viability tests. The chosen taxa were Digitalis obscura subsp. obscura, DigItalis mariana subsp. mariana, Digitalis mariana subsp. heywoodii, Aquilegia pyrenaica subsp. cazorlensis, Viola cazorlensis and Anthyllis rupestris, and the tests to which they were subjected were the germination tests, tetrazolium chloride (TTC), florochromatic reaction (FCR) and acetocarmine. The comparative study on the results of the different viability tests made it possible to differentiate their efficiency to quantify pollen viability and detect their suitability for the different taxa, in addition to showing differences in pollen viability between different endemic and threatened taxa. The information obtained would make it possible to increase the efficiency of the conservation techniques applied to these species.