Artículo
Germination of Denmoza rhodacantha (Salm-Dyck) Britton & Rose (Cactaceae)
Fecha de publicación:
03/2007
Editorial:
Academic Press Ltd - Elsevier Science Ltd
Revista:
Journal of Arid Environments
ISSN:
0140-1963
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The germination response of Denmoza rhodacantha (Salm-Dyck) Britton & Rose to seed scarification and different calcium concentrations was analysed. Both scarified and unscarified seeds were treated with two different calcium concentrations (1.74 or 6.36 meq l-1 calcium sulfate in distilled water). All treatments were conducted under a constant temperature (30 °C), and a photoperiodic regime of 12 h light and 12 h dark. Germination was initiated significantly sooner (3.6 days), and the rate of final germination was significantly higher (90.8%), for scarified seeds treated with a solution of 6.36 meq l-1 Ca compared with all other treatments (9.0-11.4 days and 3.6-6.8%, respectively). There were no significant differences among the treatments for the time in which 50% of final germination occurred (6.9-13.6 days). The results suggest that both factors, scarification and calcium concentration, favor germination of Denmoza seeds.
Palabras clave:
ARGENTINA
,
CACTUS SEEDS
,
CALCIUM SOLUTION
,
CARDONAL
,
SCARIFICATION
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Identificadores
Colecciones
Articulos(IADIZA)
Articulos de INST. ARG DE INVEST. DE LAS ZONAS ARIDAS
Articulos de INST. ARG DE INVEST. DE LAS ZONAS ARIDAS
Citación
Mendez, Eduardo; Germination of Denmoza rhodacantha (Salm-Dyck) Britton & Rose (Cactaceae); Academic Press Ltd - Elsevier Science Ltd; Journal of Arid Environments; 68; 4; 3-2007; 678-682
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