Changes in wood microstructure through progressive stages of decay

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U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory, 1968 - Medical - 46 pages
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The sequence of changes observed microscopically that occurred in wood throughout successive stages of decay was studied in the sapwood of a hardwood, sweetgum (Liquidambar styraciflua L.), and of a softwood, southern pine (Pinus sp.). The fungi used were Polyporus versicolor L. ex Fr., a white-rot fungus, and Poria monticola Murr., a brown-rot fungus. Light microscopy, plus the techniques of polarization and ultraviolet-absorption microscopy, was used to make the observations on sections 4 microns thick cut from celloidin-embedded specimens. (Author).

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Contents

Introduction
1
Proliferation of Hyphae in Decaying Wood
9
Effects of Decay on Walls of Sweetgum Fibers and Pine Tracheids
15

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