N. Marron and . Nancy-university, Fax: +33 3 83394022, e-mail: nicolas.marron@nancy.inra.fr Keywords: Bioenergy, Biomass, Energy Crops, vol.54280, p.83397330

. Dimitriou, P. Ivani?evi?, S. Orlovi?, and B. Kova?evi?, Sweden, e-mail: ioannis.dimitriou@vpe.slu.se Underground water dynamics in hidromorphic soils of protected part of alluvial plain of Danube in southern Ba?ka Peke? S, p.54280

A. Guarnaschelli and . Beatriz, 54 11 45248018/8091, e-mail: guarnasch@agro.uba.ar Plant-Microbe Interactions: The Role of Plant Genotype and Phenotype in Regulating the Symbiotic Microenvironment, Av. San Martín, vol.4453

T. J. Tschaplinski, M. J. Doktycz, and L. E. Gunter,

, BioSciences Division

L. Arborgen, . Summerville, . Sc, . Inra, and C. Nancy, France The effect of the local environmental conditions on associated organisms of Lombardy poplar (Populus nigra cv

, 3 Istituto di Biologia Agro-ambientale e Forestale

, Animal Ecology

, and Poland. Fifty leaves per tree were selected randomly once a month from May until September and evaluated for damage by six functional groups of insect: chewers, skeletonizers, leaf miners, sucking and sap feedings, gall makers and leaf rollers. Insect species were also determined for leaf miners and gall makers. There was no significant difference in damage levels between pairs of trees at each site, but significant differences were found among sites and among countries for the means of leaves damaged by each functional group. The same leaf miner species were found in the five counties but at different frequencies. The dominant gall-maker species was the aphid, Pemphigus spyrothecae, in all countries; however both species composition and dominance varied strongly among sites. Remarkably, species diversity, Populus nigra cv 'Italica') has been planted all over Europe, mostly as single trees or in rows along roads or around squares

F. Villani and I. Di-biologia-agro-ambientale-e-forestale, e:mail address: fiorella.villani@ibaf.cnr.it Photosynthesis and isoprene relationships across a range of poplar genotypes

. Poplars, Ten poplar genotypes belonging to four different species, were grown under the same environmental conditions in a common garden experiment, to study the influence of the genetic variability on isoprene emission and on the relationship between isoprene and photosynthesis. Photosynthesis was of photosynthetic carbon regardless of the intra and inter-specific variability in the Populus genus, and of leaf ontogeny. A comparison with data of recent studies showed that the slope of this relationship doubles in drought stressed leaves. However, this might be explained by an increasing contribution of carbon sources for isoprene biosynthesis that comes from stored photosynthates

G. Guidolotti, Via Salaria Km 29,300, 00015 Monterotondo Scalo (Roma), Italy, e-mail: guidolotti@unitus.it Session 7: International cooperation for poplar research and applications Poplars and Willows in the world -A comprehensive synthesis Richardson J. 1

, Poplar Council of Canada, Canada 2 Environmental Forestry Consultants LLC

, The FAO of the United Nations has authorized the International Poplar Commission to produce a major update of the 1980 FAO publication entitled 'Poplars and Willows'. Our goal willows by D.I. Dickmann and J. Kuzovkina that is arguably the most comprehensive treatment of that subject ever. The chapter on genetic resources and conservation of poplars by B. Stanton et al. includes coverage from 23 countries from each region of the world. The chapter on abiotic stresses by N. Marron et al. gives worldwide coverage of stresses including desertification, salinity and atmospheric conditions. The chapter on properties, processing and utilization by J

, The completed chapters are available at: www.fao.org/forestry/ipc/en. Click on 'Poplar & Willow Book'. Keywords: Poplars, Willows, FAO, International Poplar Commission Richardson, Jim, Poplar Council of Canada, Canada, email jrichardson@on.aibn.com The Italian National Poplar Commission and its international cooperation activities Colletti L. (CFS), Ispettorato generale, Segreteria della Commissione Nazionale per il Pioppo, Effect of pollarding for stock fodder on root dynamics of conservation willow trees in New Zealand McIvor I. 1 , Gosling M. 1 , Mason K. 1 , Gautellier-Vizioz L

, The New Zealand Institute for Plant & Food Research Limited, Private Bag 11600

J. Acker, D. Vansteenkiste, and D. Boever, Belgium Poplars are potentially the best option to increase biomass production in temperate zones, but there is a need to identify clear objectives on how to use this material in the forestry wood chain. In the past growth, disease resistance and adaptation to climatic conditions have been the major drivers for selection and breeding of poplars. The evolving wood industry and other potential end uses of biomass calls for focussing new hybrid poplar on either specific end uses or envisage multiple purpose applications. Improved material characterisation as well as high throughput methodology to support selection and breeding will allow for future strategic decisions on this, Coupure Links, vol.653

T. Ghent, +32 (0)9 264 61 18, Fax.: + 32 (0)9 264 62 33, e-mail: joris.vanacker@ugent.be Effect of heat treatment of poplar plies on physical and mechanical properties of laminated veneer lumbers

M. Nazerian, M. D. Ghaleno, and A. Bayatkashkoli, Significant difference was determined (p = 0.05) between physical and mechanical properties for three temperatures and three durations of heat treatment for veneers used in LVL. In order to determine bending strength and modulus of elasticity values, the samples were subjected to tests perpendicular and parallel to the glue line in accordance with the ISO 16978 standard. It was observed that the lowest air-dry density was determined for LVL manufactured from treated at 180 °C for 5h. The lowest weight increment as 57.53%, the lowest radial swelling as 9.74%, the lowest tangential swelling as 4.1% and the lowest longitudinal swelling as 0.44% for LVL manufactured from heat treated veneers at 180 °C for 5 and 3 h were determined. The highest flatwise and edgewise MOR (107.67 N/mm 2 and 102.1 N/mm 2 ) and MOE (6190 N/mm 2

M. Nazerian, Faculty of natural resources, Department of wood and paper technology, pp.98615-119