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dc.contributor.authorCuesta Poveda, Bárbara 
dc.contributor.authorVega, Jesús
dc.contributor.authorVillar Salvador, Pedro 
dc.contributor.authorRey Benayas, José María 
dc.date.accessioned2019-07-25T11:28:12Z
dc.date.available2019-07-25T11:28:12Z
dc.date.issued2010
dc.identifier.bibliographicCitationTrees, 2010, v. 24, n. 5, p. 899-908en
dc.identifier.issn0931-1890
dc.identifier.urihttp://hdl.handle.net/10017/38643
dc.description.abstractLarge and high nitrogen (N) concentration seedlings frequently have higher survival and growth in Mediterranean forest plantations than seedlings with the opposite traits, which has been linked to the production of deeper and larger root systems in the former type of seedlings. This study assessed the influence of seedling size and N concentration on root growth dynamics and its relation to shoot elongation in Aleppo pine (Pinus halepensis Mill.) seedlings. We cultivated seedlings that differed in size and tissue N concentration that were subsequently transplanted into transparent methacrylate tubes in the field. The number of roots, root depth, and the root and shoot elongation rate (length increase per unit time) were periodically measured for 10 weeks. At the end of the study, we also measured the twig water potential (psi) and the mass of plant organs. New root mass at the end of the study increased with seedling size, which was linked to the production of a greater number of new roots of lower specific length rather than to higher elongation rate of individual roots. Neither plant size nor N concentration affected root depth. New root mass per leaf mass unit, shoot elongation rate, and pre-dawn psi were reduced with reduction in seedling size, while mid-day psi and the root relative growth rate were not affected by seedling size. N concentration had an additive effect on plant size on root growth but its overall effect was less important than seedling size. Shoot and roots had an antagonistic elongation pattern through time in small seedlings, indicating that the growth of both organs depressed each other and that they competed for the same resources. Antagonism between shoot and root elongation decreased with plant size, disappearing in large and medium seedlings, and it was independent of seedling N concentration. We conclude that root and shoot growth but not rooting depth increased with plant size and tissue N concentration in Aleppo pine seedlings. Since production of new roots is critical for the establishment of planted seedlings, higher absolute root growth in large seedlings may increase their transplanting performance relative to small seedlings. The lack of antagonism between root and shoot growth in large seedlings suggests that these plants can provide resources to sustain simultaneous growth of both organs.en
dc.description.sponsorshipMinisterio de Economía y Competitividades_ES
dc.description.sponsorshipMinisterio de Ciencia y Educaciónes_ES
dc.description.sponsorshipComunidad de Madrides_ES
dc.format.mimetypeapplication/pdfen
dc.language.isoengen
dc.rightsAttribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)en
dc.rights© 2010 Springer-Verlagen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/en
dc.subjectNitrogen contenten
dc.subjectRhizotronen
dc.subjectRoot elongationen
dc.subjectShoot growthen
dc.subjectSink-source relationsen
dc.subjectWater potentialen
dc.titleRoot growth dynamics of Aleppo pine (Pinus halepensis Mill.) seedlings in relation to shoot elongation, plant size and tissue nitrogen concentrationen
dc.typeinfo:eu-repo/semantics/articleen
dc.subject.ecienciaMedio Ambientees_ES
dc.subject.ecienciaEnvironmental scienceen
dc.contributor.affiliationUniversidad de Alcalá. Departamento de Ecologíaes_ES
dc.date.updated2019-07-25T11:26:38Z
dc.type.versioninfo:eu-repo/semantics/publishedVersionen
dc.identifier.doi10.1007/s00468-010-0459-0
dc.relation.projectIDFPI grant (Ministerio de Economía y Competitividad)es_ES
dc.relation.projectIDAGL2006-12609-C02-01/FOR (Ministerio de Ciencia y Educación)es_ES
dc.relation.projectIDS-0505/AMB/0355 REMEDINAL (Comunidad de Madrid)es_ES
dc.relation.projectIDinfo:eu-repo/grantAgreement/CAM//S2009%2FAMB-1783/ES/Restauración y conservación de los ecosistemas madrileños: respuesta frente al cambio global/es_ES
dc.relation.projectIDinfo:eu-repo/grantAgreement/MEC//CGL2007-60533/ES/EFECTOS DE LA REVEGETACION (PASIVA Y ACTIVA) EN LA DINAMICA Y DIVERSIDAD DE ESPECIES LEÑOSAS Y AVES/es_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessen
dc.identifier.uxxiAR/0000011964
dc.identifier.publicationtitleTreesen
dc.identifier.publicationvolume24
dc.identifier.publicationlastpage908
dc.identifier.publicationissue5
dc.identifier.publicationfirstpage899


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