Inter- and intra-population variability in physical dormancy along a precipitation gradient
| Autor: | Sebastián R. Zeballos, Ana Elisa Ferreras, Guillermo Funes |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
PHYSICAL DORMANCY Otras Ciencias Biológicas PRECIPITATION GRADIENT precipitation gradient Plant Science Biology 010603 evolutionary biology 01 natural sciences purl.org/becyt/ford/1 [https] Ciencias Biológicas physical dormancy lcsh:Botany Precipitation purl.org/becyt/ford/1.6 [https] Ecology Local scale food and beverages Fabaceae Vachellia aroma VACHELLIA AROMA biology.organism_classification inter-population variability Arid lcsh:QK1-989 Population variability Germination intra-population variability INTER AND INTRA-POPULATION VARIABILITY Dormancy Imbibition CIENCIAS NATURALES Y EXACTAS 010606 plant biology & botany |
| Zdroj: | Acta Botânica Brasílica, Vol 31, Iss 1, Pp 141-146 Acta Botanica Brasilica, Volume: 31, Issue: 1, Pages: 141-146, Published: 13 MAR 2017 CONICET Digital (CONICET) Consejo Nacional de Investigaciones Científicas y Técnicas instacron:CONICET |
| ISSN: | 1677-941X 0102-3306 |
| DOI: | 10.1590/0102-33062016abb0406 |
| Popis: | 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. Fil: Ferreras, Ana Elisa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina Fil: Zeballos, Sebastián Rodolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina Fil: Funes, Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina |
| Databáze: | OpenAIRE |
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