天然耐腐材有效抗菌成分的研究——Ⅱ.天然耐腐材在腐朽过程中超微结构的变化

<正>本文报道籍扫描电镜观察杉木和楸木在彩绒革盖菌和密粘褶菌作用下发生的超微结构的变化,并以杨木边材作对照,配合腐朽前后木材结晶度的变化,说明木材腐朽的过程,并进一步证实杉木和楸木所具有的天然耐腐力。

STUDIES ON ACTIVE ANTIFUNGAL SUBSTRACTES IN NATURAL DURABLE SPECIES II. CHANGES IN ULTRASTRUCTURE DURING DECAY BY CORIOLUS VERSICOLOR AND GLOEOPHYLLUM TRABEUM

The changes in ultrastructure and crystallinity of the heartwood of Cun-ninghamia lanceolaia, Catalpa bungei and the sapwood of Populus deltoides during decay by C. versicolor and G. trabtum were studied by Scanning Electron Microscopy and X-ray diffraction method. Results show that Populus dehoidcs was havily rotted by the white-rot and brown-rot fungi. The crystallinity was decreased by 50% after 12 weeks decay by the brown-rot fungus. But treated wity the same methods and duration only slight change were found in the ultrastructure and crystallinity of Cunninghamia lanceolaia and Catalpta bungei, indicating that the heartwocd of the two species are very resistant to both C. versicolor and G. trabeum.