Phys. Rev. Lett. 92, 168102 (2004) [4 pages]Phyllotactic Patterns on Plants
See accompanying Physics Focus We demonstrate how phyllotaxis (the arrangement of leaves on plants) and the deformation configurations seen on plant surfaces may be understood as the energy-minimizing buckling pattern of a compressed shell (the plant’s tunica) on an elastic foundation. The key new idea is that the strain energy is minimized by configurations consisting of special triads of almost periodic deformations. We reproduce a wide spectrum of plant patterns, all with the divergence angles observed in nature, and show how the occurrences of Fibonacci-like sequences and the golden angle are natural consequences. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.92.168102
DOI:
10.1103/PhysRevLett.92.168102
PACS:
87.15.La, 62.20.Dc, 87.10.+e
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