805 PB 115 FRACTAL CHARACTERIZATION OF GRAPE BERRY WAX SURFACE STRUCTURE.
1994; American Society for Horticultural Science; Volume: 29; Issue: 5 Linguagem: Inglês
10.21273/hortsci.29.5.548e
ISSN2327-9834
AutoresSteven C. Wiest, Edward W. Hellman,
Tópico(s)Horticultural and Viticultural Research
ResumoScanning electron micrographs of grape berry surfaces, which resemble mountainscapes, contain a wealth of structural information. A typical statistical characterization of features such as root mean square peak-to-peak spacings, peak density, etc., is readily performed on these images. However, a much richer base of information is accessible by analyzing the images with fractal geometry. Fractal box dimension is a quantitative measure of surface roughness, and varies with the contour at which it is determined in both cultivars `Foch' and `Perlette', suggesting that the surfaces are multifractal structures. Fourier spectral analyses of the surfaces produce a similar conclusion. Thus, the unambiguous quantitative resolution of cultivars on the basis of their wax surface structure looks promising, but requires further work.
Referência(s)