The possible and the actual in phyllotaxis: Bridging the gap between empirical observations and iterative models

Scott Hotton, Valerie Johnson, Jessica Wilbarger, Kajetan Zwieniecki, Pau Atela, Christophe Golé, Jacques Dumais

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

This article presents new methods for the geometrical analysis of phyllotactic patterns and their comparison with patterns produced by simple, discrete dynamical systems. We introduce the concept of ontogenetic graph as a parsimonious and mechanistically relevant representation of a pattern. The ontogenetic graph is extracted from the local geometry of the pattern and does not impose large-scale regularity on it as for the divergence angle and other classical descriptors. We exemplify our approach by analyzing the phyllotaxis of two asteraceae inflorescences in the light of a hard disk model. The simulated patterns offer a very good match to the observed patterns for over 150 iterations of the model.

Original languageEnglish
Pages (from-to)313-323
Number of pages11
JournalJournal of Plant Growth Regulation
Volume25
Issue number4
DOIs
StatePublished - Dec 2006

Keywords

  • Artichoke
  • Delaunay triangulation; Dynamical system
  • Phyllotaxis
  • Shoot apical meristem
  • Sunflower
  • Voronoi tessellation

Fingerprint

Dive into the research topics of 'The possible and the actual in phyllotaxis: Bridging the gap between empirical observations and iterative models'. Together they form a unique fingerprint.

Cite this