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Interactive responses of Quercus suber L. seedlings to light and mild water stress: effects on morphology and gas exchange traits / Jaime Puértolas in Annals of Forest Science, Vol 65 n° 6 (September 2008)  

Public [article]  inAnnals of Forest Science > Vol 65 n° 6 (September 2008) . - n° 611 Titre : Interactive responses of Quercus suber L. seedlings to light and mild water stress: effects on morphology and gas exchange traits Titre original : Réponses interactives de semis de Quercus suber L. à la lumière et à un stress hydrique modéré : effets sur la morphologie et sur les caractéristiques des échanges gazeux Type de document : Article/Communication Auteurs : Jaime Puértolas, Auteur ; Marta Pardos, Auteur ; María Dolores Jiménez, Auteur ; Ismael Aranda, Auteur ; José Alberto Pardos, Auteur Année de publication : 2008 Article en page(s) : n° 611 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Végétation [Termes IGN] diagnostic foliaire [Termes IGN] ombre [Termes IGN] photosynthèse [Termes IGN] Quercus suber [Termes IGN] stress hydrique Résumé : (auteur) The combined effect of water stress and light on seedlings of forest species is a key factor to determine the best silvicultural and afforestation practices in the Mediterranean area. The aims of this work was (1) to determine the optimal light level for the early development of cork oak seedlings under mild water stress and (2) to test if the combined effect of water stress and light followed the trade-off, the facilitation or the orthogonal hypothesis. Shade reduced instantaneous photosynthetic rates and water use efficiency in cork oak. However, seedlings grown under moderate shade (15% of full sunlight) were capable to accumulate similar amount of biomass than those grown under more illuminated environments by increasing their specific leaf area. Absolute differences in net photosynthesis between light treatments were higher in well watered than in water stressed seedlings. However, the impact of both factors on overall growth was orthogonal. We concluded that cork oak development is impaired under deep shade (5% of full sunlight) but it can be optimal under moderate shade (15% of full sunlight) even under moderate water stress. Implications of these patterns on regeneration, cultivation and afforestation of cork oak are discussed. Numéro de notice : A2008-698 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1051/forest:2008044 Date de publication en ligne : 04/09/2008 En ligne : https://www.afs-journal.org/articles/forest/abs/2008/06/f08038/f08038.html Format de la ressource électronique : url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=70784 [article]

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Code-barres	Cote	Support	Localisation	Section	Disponibilité
IFN-DIR-P000123	PER	Revue	Nogent-sur-Vernisson	Salle périodiques	Exclu du prêt