dc.contributor | Universidade de São Paulo (USP) | |
dc.contributor | CIRAD, UMR Eco at Sols | |
dc.contributor | Universidade Estadual Paulista (Unesp) | |
dc.contributor | Ecole Supérieure d'Agriculture d'Angers | |
dc.contributor | AgroParisTech | |
dc.contributor | Université de Bordeaux, UMR 1220 TCEM | |
dc.contributor | INRA, UR Biogéochimie des Ecosystèmes Forestiers | |
dc.date.accessioned | 2014-05-27T11:30:46Z | |
dc.date.accessioned | 2022-10-05T19:00:26Z | |
dc.date.available | 2014-05-27T11:30:46Z | |
dc.date.available | 2022-10-05T19:00:26Z | |
dc.date.created | 2014-05-27T11:30:46Z | |
dc.date.issued | 2013-10-01 | |
dc.identifier | Plant and Soil, v. 371, n. 1-2, p. 19-35, 2013. | |
dc.identifier | 0032-079X | |
dc.identifier | http://hdl.handle.net/11449/76689 | |
dc.identifier | 10.1007/s11104-013-1663-7 | |
dc.identifier | WOS:000324882500003 | |
dc.identifier | 2-s2.0-84884816917 | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/3925568 | |
dc.description.abstract | Background and Aims: Recent studies showed a positive tree response to Na addition in K-depleted tropical soils. Our study aimed to gain insight into the effects of K and Na fertilizations on leaf area components for a widely planted tree species. Methods: Leaf expansion rates, as well as nutrient, polyol and soluble sugar concentrations, were measured from emergence to abscission of tagged leaves in 1-year-old Eucalyptus grandis plantations. Leaf cell size and water status parameters were compared 1 and 2 months after leaf emergence in plots with KCl application (+K), NaCl application (+Na) and control plots (C). Results: K and Na applications enhanced tree leaf area by increasing both leaf longevity and the mean area of individual leaves. Higher cell turgor in treatments +K and +Na than in the C treatment resulting from higher concentrations of osmotica contributed to increasing both palisade cell diameters and the size of fully expanded leaves. Conclusions: Intermediate total tree leaf area in treatment +Na compared to treatments C and +K might result from the capacity of Na to substitute K in osmoregulatory functions, whereas it seemed unable to accomplish other important K functions that contribute to delaying leaf senescence. © 2013 Springer Science+Business Media Dordrecht. | |
dc.language | eng | |
dc.relation | Plant and Soil | |
dc.relation | 3.306 | |
dc.rights | Acesso restrito | |
dc.source | Scopus | |
dc.subject | Cell size | |
dc.subject | Cell turgor | |
dc.subject | Expansion | |
dc.subject | K | |
dc.subject | Leaf area | |
dc.subject | Leaf lifespan | |
dc.subject | Leaf longevity | |
dc.subject | Na | |
dc.subject | Nutrient | |
dc.subject | Osmotic potential | |
dc.subject | Soluble sugars | |
dc.title | Influence of potassium and sodium nutrition on leaf area components in Eucalyptus grandis trees | |
dc.type | Artigo | |