- Tytuł:
- Aberrant phyllotactic patterns in cones of some conifers: a quantitative study
- Autorzy:
- Fierz, V.
- Powiązania:
- https://bibliotekanauki.pl/articles/56470.pdf
- Data publikacji:
- 2015
- Wydawca:
- Polskie Towarzystwo Botaniczne
- Tematy:
-
phyllotactic diversity
phyllotaxis
Pinus nigra
Larix decidua
cone
conifer
quantitative study - Opis:
- The scale patterns of 6000 cones from one single tree of Pinus nigra Arn. have been examined. Apart from the main Fibonacci pattern with 8 and 13 parastichies, nine aberrant spiral patterns with Fibonacci-type sequences have been found. They are quite rare and occur with different frequencies. The parastichy quotient 8/13 of the prevalent pattern is very close to the golden ratio 0.618. In case of the black pine it appeared that the greater the deviation of the parastichy quotient m/n from 0.618, the rarer the pattern. Similar results obtained for the sample of 1506 cones collected from three individual trees of larch (Larix decidua Mill.) suggest a true correlation between the frequency of a pattern and the deviation of its parastichy quotient from the golden ratio.
- Źródło:
-
Acta Societatis Botanicorum Poloniae; 2015, 84, 2
0001-6977
2083-9480 - Pojawia się w:
- Acta Societatis Botanicorum Poloniae
- Dostawca treści:
- Biblioteka Nauki
Artykuł