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- Title
INFLUENCIA DE LAS CONDICIONES DE TEMPERATURA E ILUMINACIÓN EN LA ROTURA DE LATENCIA Y GERMINACIÓN DE AMELANCHIER OVALIS (ROSACEAE). APLICACIÓN PARA OPTIMIZAR LA PRODUCCIÓN DE PLANTA EN VIVERO.
- Authors
HERRANZ FERRER, Raquel; COPETE CARREÑO, Miguel A.; FERRANDIS GOTOR, Pablo; HERRANZ^SANZ, José Maria
- Abstract
We investigated the ecology of seed germination of Amelanchier ovalis by performing laboratory tests within germination chambers, under controlled temperature and light conditions. Tests were carried out at constant temperature of 5°C and fluctuating temperatures of 15/4, 20/7, 25/10 y 28/14°C, simulating natural conditions in sub-Mediterranean environments throughout the year. Seeds which were not submitted to a previous cold (5°C in light) stratification could not germinate, even although being treated with gibberellic acid. In contrast, seeds which were cold stratified for 3 months, reached 63% germination when incubated at 20/7°C with light (T50= 10.5 days), and surpassed 50% germination at subsequent 15/4 and 25/10°C incubations. Similar promoting-germination effects (>60% germination at 15/4°C) were recorded when seeds were submitted to a moderately warm stratification simulating autumn conditions (1 month at 20/7°C in light + 1 month at 15/4°C in light) followed by a cold (2 months at 5°C in light) stratification simulating winter conditions. In the light of those results, it may be concluded that Amelanchier ovalis seeds have intermediate physiological dormancy.
- Publication
Sabuco Revista de Estudios Albacetenses, 2017, Issue 12, p79
- ISSN
1577-2969
- Publication type
Article