Open AccessIs the orientation of the fibrillar helix in the main layer of cell walls constant or variable within a tree?
Author(s) -
W. Pyszyński,
Z. Hejnowicz
Publication year - 2015
Publication title -
acta societatis botanicorum poloniae
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 29
eISSN - 2083-9480
pISSN - 0001-6977
DOI - 10.5586/asbp.1972.004
Subject(s) - orientation (vector space) , fibril , helix (gastropod) , geometry , crystallography , long axis , spiral (railway) , picea abies , chemistry , mathematics , biophysics , botany , biology , mathematical analysis , ecology , snail
The study material consisted of samples from 270 Picea excelsa and 54 Abies alba trees with variable type of wood grain. No correlation was found between the orientation of the fibrils and the type of grain. In all the samples in which the fibrillar helix formed an angle with the cell axis greater than 10° (80% of the total) the helix was of Z type. In the other samples undulations commonly occured in the orientation of fibrils within a cell. These were in the form of local deviations to the left or right of the general trend to develop the Z type of spiral