Aberrant phyllotactic patterns in cones of some conifers: a quantitative study

• Autorzy: Fierz V.
• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

phyllotactic diversity; phyllotaxis; Pinus nigra; Larix decidua; cone; conifer; quantitative study

• Wydawca: -
• Czasopismo: Acta Societatis Botanicorum Poloniae
• Rocznik: 2015
• Tom: 84
• Numer: 2
• Opis fizyczny: p.261-265,fig.,ref.

Twórcy

autor

Fierz V.

• Hinterzelg 37, 8700 Kusnacht, Switzerland

Bibliografia

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Identyfikatory

DOI

10.5586/asbp.2015.025