Abstract
The weight and component losses of Pinus radiata wood after decay by six species of white-rot and two species of brown-rot fungi for periods varying from 30 to 360 days were evaluated. Three groups of decayed wood samples were identified based on the principal component analysis (PCA) of the data on their weight and component losses. Selective lignin degradation was produced by Ceriporiopsis subvermispora and Punctularia atropurpurascens within different periods, the longest one lasting 90 days, and also by Merulius tremellosus after 90 days of biodegradation. Comparing the data on biodegradation of P. radiata by Trametes versicolor with the ones reported for biodegradation of Eucalyptus globulus and E. grandis indicated that P. radiata is as susceptible to wood decay by this white-rot fungus as the two types of hardwood.
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