Artículos en revistas:
Germination ecology of the perennial Centaurium somedanum, a specialist species of mountain springs
Germination ecology of the perennial Centaurium somedanum, a specialist species of mountain springs
Año:2012
Áreas de investigación
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Ciencias naturales y ciencias de la salud
Datos
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Descripción
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| To improve understanding of how a rare endemic species of Centaurium adapts to a specialized ecological niche, we studied the germination ecology of the mountain spring specialist, C. somedanum, a perennial species restricted to an unusual habitat for this genus. We conducted laboratory experiments with fresh seeds collected from two populations for three consecutive years, to investigate: (1) the effect of temperature and light ongermination; (2) the existence of seed dormancy; and (3) inter-population and inter-annual variation in germinability. Germination occurred only in the light and at relatively low temperatures (15-228ºC) with no differences between constant and alternating regimes, and a significant decrease at high temperatures (258ºC and 308ºC). We found non-deep simple morphophysiological dormancy and variation in seed germinability depending on the year of seed collection. C. somedanum diverged from the common germination characteristics of the genus in: (1) its germination at lower temperatures, which contrasts with what is generally expected in wetland species but could be adaptive in the spring habitat; and (2) its morphophysiological dormancy, which we report here for the first time in the genus and which could be an adaptation to its mountain habitat. | |
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Internacional
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Si |
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JCR del ISI
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Si |
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Título de la revista
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Seed Science Research |
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ISSN
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0960-2585 |
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Factor de impacto JCR
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1,059 |
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Información de impacto
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Volumen
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DOI
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10.1017/s0960258512000062 |
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Número de revista
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22 |
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Desde la página
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195 |
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Hasta la página
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205 |
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Mes
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SIN MES |
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Ranking
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Participantes
- Autor: Eduardo Fernández-Pascual (Jardín Botánico Atlántico, Universidad de Oviedo)
- Autor: Borja Jiménez-Alfaro (Jardín Botánico Atlántico, Universidad de Oviedo)
- Autor: Ana I. García-Torrico (Jardín Botánico Atlántico, Universidad de Oviedo)
- Autor: Felix Perez Garcia (UPM)
- Autor: Tomás E. Díaz ((Jardín Botánico Atlántico, Universidad de Oviedo)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
- Creador: Grupo de Investigación: Biodiversidad y conservación de recursos fitogenéticos
- Departamento: Biología Vegetal
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