Flood Tolerance of Seeds and Seedlings of Three Native Forest Species of South America

 

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Autores: Kubota, Victoria R., Britez, Derlis N., Duete, Gabriel A., Enciso G., Manuel M., García, María Lis, Guillén, Sara B.
Formato: artículo original
Estado:Versión publicada
Fecha de Publicación:2020
Descripción:[Introduction]: In the last decades, several countries of South America registered intense rainfalls and floods affecting riparian and gallery forests. Yet knowledge of the flooding tolerance of forest species is very limited. [Objective]: This study aimed to evaluate seeds and seedlings behavior of Luehea divaricata Mart., Parapiptadenia rigida (Benth.) Brenan, and Guibourtia hymenaeifolia (Moric.) J. Léonard exposed to ex-situ flooding regimes. [Methods]: Seeds of the selected species were immersed in water over seven different periods. After immersion seeds were sown, and their germination percentage and seedlings survival were evaluated for 30 days. [Results]: L. divaricata reduced its germination rate during the experiment from 45.9 % to 23.1 %. One fifth of the seeds of this species kept the germination capability even after 30 days of the immersion treatment. A visible loss of the germination capability and seedling survival was observed in P. rigida and G. hymenaeifolia when the immersion period exceeded five days. [Conclusions]: The response of seeds to immersions varied between species, being L. divaricata the species with better tolerance to flooding conditions.
País:Portal de Revistas UNA
Institución:Universidad Nacional de Costa Rica
Repositorio:Portal de Revistas UNA
Lenguaje:Español
OAI Identifier:oai:ojs.www.una.ac.cr:article/14041
Acceso en línea:https://www.revistas.una.ac.cr/index.php/ambientales/article/view/14041