PHYLLOTAXIS AS A DYNAMICAL SELF-ORGANIZING PROCESS .3. THE SIMULATIONOF THE TRANSIENT REGIMES OF ONTOGENY

In two previous articles [Douady & Couder (1996a,b)] two iterative sys tems were defined, based respectively on hypotheses developed by Hofme ister (1868) and Snow & Snow (1952). It was shown that in the latter m odel all the variety of the spiral, whorled and multijugate patterns o bserved on botany could be obtained as steady regimes of the iteration . In this third article, several of the characteristic transient evolu tions observed during the ontogeny are revisited. In the framework of the iterative system of Snow & Snow these evolutions can be reproduced , provided realistic initial conditions and time variations of the par ameters are imposed. (C) 1996 Academic Press Limited