Natural durability of the woods of Apuleia leiocarpa, Astronium lecointei and Enterolobium schomburgkii to the rotting fungus Trametes versicolor
DOI:
https://doi.org/10.4336/2018.pfb.38e201801664Keywords:
Wood resistance, Rotting wood, Xylophagous fungusAbstract
The objective of the present study was to evaluate the natural durability of the wood of Apuleia leiocarpa (grápia), Astronium lecointei (muiracatiara) and Enterolobium schomburgkii (fava-orelha-de-negro) under the attack of fungi causing white rot Trametes versicolor (Linnaeus ex Fries) Pilat, under controlled laboratory conditions, by the accelerated rotting test. We used 15 samples of heartwood of each species, with 2.5 x 2.5 x 0.9 cm (radial, tangential and axial, respectively). The samples remained for 16 weeks in an incubator under attack of the fungus. After the period of the attack the mass loss and class of natural durability were determined. E. schomburgkii presented the highest average loss of mass (17.5%), followed by A. lecointei (15.5%), both classified as resistant to T. versicolor. A. leiocarpa wood presented higher durability (10.6% loss of mass), being classified as highly resistant. The wood of A. leiocarpa differed statistically from the others, indicating potential of greater durability when placed under condition that favor the development of this xylophagus.
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