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- Title
Transverse shape analysis of xylem ground tissues by Fourier transform image analysis I: trial for statistical expression of cell arrangements with fluctuation.
- Authors
Yoko Midorikawa; Yoji Ishida; Minoru Fujita
- Abstract
Abstract Periodic cell arrangements of tracheids in Cryptomeria japonica and Agathis sp., and that of wood fibers in Magnolia obovata were examined by Fourier transform image analysis (FTIA). The angular distribution functions on power spectral patterns (PSPs) transformed from the dot maps were traced. As well as this conventional method, we developed the line convolution method and domain transformation for more correct analysis of radial and tangential arrangements. Cell arrangements became clear in Cryptomeria and Agathis. Fluctuations were expressed by the standard deviation (s) or the relative standard deviation (sr) so that we could compare the characteristics of both woods. In Cryptomeria, the most provable distance between tracheids along radial files was 36.7?m with 17% fluctuation, whereas the tangential interval was 28.3?m with sr of 24%. In Agathis, the radial diameter was 35.1?m with sr of 23% and the tangential interval was 41.5?m with sr of 23%. In Magnolia, the maximal periodicity of wood fibers was 15.8?m and 20.5?m along and between radial files, respectively, although the fluctuations could not be estimated because of the remarkable interruptions by numerous vessels.
- Subjects
XYLEM; PLANT cells &; tissues; VASCULAR system of plants; PLANT products
- Publication
Journal of Wood Science, 2005, Vol 51, Issue 3, p201
- ISSN
1435-0211
- Publication type
Article
- DOI
10.1007/s10086-004-0642-2