Decay resistance against Coriolus versicolor in Sessile oak ( Quercus petraea Liebl.): analysis of the between-tree variability and correlations with extractives, tree growth and other basic wood properties

Abstract

Weight loss due to fungus Coriolus versicolor has been measured on 614 samples according to the NF EN 113 norm. Up to eight samples were cut at breast height (two opposite radii·four radial positions in heartwood) from 82 mature sessile oaks (Quercus petraea Liebl.) originating from contrasting regions, silvicultural schedules and site qualities in France. The following points are addressed in the paper: (i) contribution to the total variability for weight loss of the effects ''tree'', ''position in the tree'', as well as their interaction; (ii) percentage of wood samples and trees in each of the five classes of natural durability defined by the norm NF EN 350-2; (iii) test of the effects of region, silvicultural schedule and site quality on weight loss and evaluating their contribution to the total variation; and (iv) correlations at tree level between weight loss and several traits related to tree growth and E. Guilley (&) CIG, Universite´de Gene`ve, 59 Route de Mon-Ide´e,

Variation of Brown Rot Decay in Eastern White Cedar (Thuja occidentalis L.)

“…The significant tree effect on decay could be partially explained by the age difference among trees from a same site. This result is in good agreement with previous findings (Guilley et al 2004;Windeisen et al 2002). Moreover, several studies have attributed a significant tree effect on decay to the difference in extractives content between trees, which is age dependent (Anagnost and Smith 1997;Oliveira et al 2010;Windeisen et al 2002).…”

Distribution radiale des quinones dans du teak de plantation (Tectona grandis L.f.)

“…Previous studies with other species such as Cinnamomum camphora (Hashimoto et al, 1997) showed that variation in termite resistance could be explained by the concentration of the largely responsible component (camphor). Significant correlations were reported between ellagitannin content and decay resistance of Quercus petraea (Guilley et al, 2004), whereas the variation in decay resistance of Larix sibrica (Venalainen et al, 2006) showed a good correlation with taxifolin content. In contrast, Taylor et al (2006) found that variations in extractive components explained relatively little the variation in fungal and termite resistance of Thuja plicata and Chamaecyparis nootkanensis wood.…”

“…Several studies have dealt with the distribution of extractive components in other species. The decrease in some active component contents in inner heartwood was noted in Thuja plicata (Nault, 1988), Pinus sylvestris (Venalainen et al, 2003) and Quercus petraea (Guilley et al, 2004).…”

“…In other species, good correlations have been found between extent of decay and extractive content in Larix sp. (Windeisen et al, 2002), Pinus sylvestris (2003) and Quercus petraea (Guilley et al, 2004), with the extractive content found to be greater in the outer heartwood than in the inner heartwood zone.…”

Colour and decay resistance and its relationships in Eperua grandiflora

“…The natural decay resistance of wood is dependant on the amount and quality of primary metabolites and on the storage of extractives deposited in the heartwood (Delaveau and Vidal-Tessier, 1988;Zabel and Morell, 1992). These substances inhibit the primary metabolism of fungi or the degradation process that they trigger, and their content increases with the tree age (Hillis, 1987;Nault, 1988;Posey and Robinson, 1969 (Gartner et al, 1999, Guilley et al, 2004. Decay variations were due to the presence of extractives formed between the sapwood and the outermost, to the duraminisation and ageing process.…”