Inter- and intra-population variability in physical dormancy along a precipitation gradient

 

Autores
Ferreras, Ana Elisa; Zeballos, Sebastián Rodolfo; Funes, Guillermo
Tipo de recurso
artículo
Estado
Versión publicada
Año de publicación
2017
País
Argentina
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio
CONICET Digital (CONICET)
Descripción
Physical dormancy enables plants that occur in temporally stochastic and harsh environments to survive; thus, within the distribution area of a species, the percentage of seeds with physical dormancy is expected to increase towardsmore arid and unpredictable areas. Th ere have been no previous studies evaluating both inter and intra-population variability in physical dormancy along a precipitation gradient. Th e aim of this study was to determine the interand intra-population variability in physical dormancy of seeds of Vachellia aroma (Fabaceae) along a precipitation gradient. We collected mature fruits from four localities along a precipitation gradient in central Argentina for animbibition experiment using controlled germination chambers. Changes in physical dormancy were not found along the precipitation gradient; however, a trend toward higher percentage of seed imbibition (lower PY) at the most humid extreme of the gradient was observed. On the contrary, we did observed intra-population variability in three of the four populations, suggesting that most of the populations of V. aroma might have the ability to deal with the environmental variability encountered at local scale. Th is study highlights the importance of studying both interand intra-population variability in physical dormancy.
Idioma
inglés
OAI Identifier
oai:ri.conicet.gov.ar:11336/41337
Enlace del recurso
http://hdl.handle.net/11336/41337
Nivel de acceso
Acceso abierto
Materia
PHYSICAL DORMANCY
INTER AND INTRA-POPULATION VARIABILITY,
VACHELLIA AROMA
PRECIPITATION GRADIENT
Otras Ciencias Biológicas
Ciencias Biológicas
CIENCIAS NATURALES Y EXACTAS