caa a22 4500 463216768 CHVBK 20180405153159.0 cr unu---uuuuu 170326e20070401xx s 000 0 eng 10.1007/s00226-006-0112-7 doi (NATIONALLICENCE)springer-10.1007/s00226-006-0112-7 Radial variation of vessel size and distribution in cork oak wood ( Quercus suber L.) [Elektronische Daten] [Sofia Leal, Vicelina Sousa, Helena Pereira] Quercus suber L. is an important species producing cork whose wood characteristics have not been investigated a lot. Cork oak wood vessels are a striking feature and the most abundant wood tissue largely influencing density and permeability. Vessel size and distribution were studied in approximately 40year-old and never debarked cork oaks by continuously measuring along the radial direction in the transverse section of wood discs taken at 1.3m of height using image analysis techniques. The vessel size increases with age from 7660±2286 to 21136±6119μm2, the conductive area from 5.4±2.2 to 11.6±3.9%, and the vessel density remains approximately constant between 5.2±1.5 and 7.3±3.5vessels/mm2. In comparison with ring-porous and some evergreen oaks, cork oaks show a similar conductive area but smaller vessels. Vessel architecture is known to play an important role on oaks tolerance to hydric stress, and these cork oak trees were growing under very harsh edaphoclimatic conditions, not tolerated by other oaks. The well-developed and deep root system allowing access to constant water supply may contribute to the cork oak's relatively high conductive area. Springer-Verlag, 2006 Leal Sofia Centro de Estudos Florestais, Instituto Superior de Agronomia, Tapada da Ajuda, 1349-017, Lisboa, Portugal aut Sousa Vicelina Centro de Estudos Florestais, Instituto Superior de Agronomia, Tapada da Ajuda, 1349-017, Lisboa, Portugal aut Pereira Helena Centro de Estudos Florestais, Instituto Superior de Agronomia, Tapada da Ajuda, 1349-017, Lisboa, Portugal aut Wood Science and Technology Springer-Verlag 41/4(2007-04-01), 339-350 0043-7719 41:4<339 2007 41 226 https://doi.org/10.1007/s00226-006-0112-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00226-006-0112-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Leal Sofia Centro de Estudos Florestais, Instituto Superior de Agronomia, Tapada da Ajuda, 1349-017, Lisboa, Portugal aut NATIONALLICENCE 700 1- Sousa Vicelina Centro de Estudos Florestais, Instituto Superior de Agronomia, Tapada da Ajuda, 1349-017, Lisboa, Portugal aut NATIONALLICENCE 700 1- Pereira Helena Centro de Estudos Florestais, Instituto Superior de Agronomia, Tapada da Ajuda, 1349-017, Lisboa, Portugal aut NATIONALLICENCE 773 0- Wood Science and Technology Springer-Verlag 41/4(2007-04-01), 339-350 0043-7719 41:4<339 2007 41 226 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer