Observatorio de I+D+i UPM

Memorias de investigación
Artículos en revistas:
The relevance of seed size in modulating leaf physiology and early plant performance in two tree species
Año:2011
Áreas de investigación
  • Ciencias naturales y ciencias de la salud
Datos
Descripción
may affect the early establishment of seedlings through different physiological processes. Here, we examined the effects of seed size and light availability on seedling growth and survival, and whether such effects were mediated by water use efficiency. Acorns of Quercus petraea and the more drought-tolerant Quercus pyrenaica were sowed within and around a tree canopy gap in a sub- Mediterranean forest stand. We monitored seedling emergence and measured predawn leaf water potential (Wpd), leaf nitrogen per unit area (Na), leaf mass per area, leaf carbon isotope composition (d13C) and plant growth at the end of the first summer. Survival was measured on the next year. Path analysis revealed a consistent pattern in both species of higher d13C as Wpd decreased and higher d13C as seedlings emerged later in the season, indicating an increase in 13C as the growing season is shorter and drier. There was a direct positive effect of seed size on d13C in Q. petraea that was absent in Q. pyrenaica. Leaf d13C had no effect on growth but the probability of surviving until the second year was higher for those seedlings of Q. pyrenaica that had lower d13C on the first year. In conclusion, leaf d13C is affected by seed size, seedling emergence time and the availability of light and water, however, leaf d13C is irrelevant for first year growth, which is directly dependent on the amount of seed reserves.
Internacional
Si
JCR del ISI
Si
Título de la revista
Trees-Structure And Function
ISSN
0931-1890
Factor de impacto JCR
1,444
Información de impacto
Volumen
25
DOI
Número de revista
Desde la página
873
Hasta la página
884
Mes
SIN MES
Ranking
13/59 Forestry
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Nikolaos Nanos (UPM)
  • Autor: Jesús Rodríguez Calcerrada (GENFOR)
  • Autor: Ismael Aranda García (INIA)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Genética y Fisiología Forestal
  • Departamento: Silvopascicultura
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