Accession Number : AD0717528

Title :   The Vestured Pits of Eucalyptus regnans F. Muell.: A Study Using Scanning Electron Microscopy,

Corporate Author : COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANIZATION MELBOURNE (AUSTRALIA) DIV OF FOREST PRODUCTS

Personal Author(s) : Scurfield,G. ; Silva,S. R.

Report Date : NOV 1969

Pagination or Media Count : 15

Abstract : Scanning electron microscopy has been used to examine the surface architecture, before and after various chemical treatments, of the pits in the walls of vessels, vasicentric and fibre tracheids, and parenchyma cells, which togehter make up the wood of Eucalyptus regnans. The treatments included water at 150C under pressure, hydrofluoric acid, delignifying agents and potassium permanganate. All bordered pits were vestured; half-bordered pits were vestured, partially vestured or non-vestured. No distinction could be made between warts and vestures on morphological or chemical grounds. An hypothesis is advanced which relates vesture formation to prolongation of the activity of the protoplast in pits as the cells die. Vestures, on the basis of this hypothesis, could be regarded as enlarged or conglomerate warts. (Author)

Descriptors :   (*TREES, CELL STRUCTURE), AUSTRALIA, PLANTS(BOTANY), WOOD, CELLS(BIOLOGY), CYTOLOGY, ELECTRON MICROSCOPY, PATHOLOGY, CHEMICALS, RESPONSE(BIOLOGY)

Subject Categories : Biology

Distribution Statement : APPROVED FOR PUBLIC RELEASE