Abstract:

The conventional weight analysis(CWA),i.e.,the percent weight loss of the wood specimens was used as an index to evaluate the wood degrading ability for 64 wood-rotting. fungi to degrade korean pine,Pinus koraiensis Sieb. et Zucc.,cathay poplar,Populus cathayana Rehd., Asian white birch,Betula platyphylla Suk.The percent weight loss and the color change of wood specimens were measured after 46 days of culture. The results showed that their wood degrading ability was significantly different.Nigrofomes castaneus (Imaz.)Teng. collected from the Chang Bai Mountain Forest Reserve in Northeastern China is the strongest brown-rot fungus to degrade wood in all the measured species,it caused 64.9%,52.2% and 16.9% weight loss of Asian white birth, cathay poplar and korean pine wood specimens respectively;Tyromyces albidus Donk.,Ganoderma lucidum Karst.,Polyporellus brumalis Fr.,Lenzites tricolor Fr.,Favolus alveolaris Quel.,Pycnoporus cinnabarinus Karst., Coriolus versicolor Quel. were some species of white-rot fungi with high and higher wood degrading ability.

Key words: Laboratory test of decay resistance of woods, Wood degrading ability, Wood-rotting fungi