AGROBIOLOGIA
Volume 2, Numéro 1, Pages 21-28
2012-01-01

The Inflorescences Of Asteraceae As An Adaptation To Unpredictable Climates



Authors : Daniel Petit .

Abstract

The monotelic inflorescences of Asteraceae show architectures varying between the definite grappe (panicle) and the cyme. It is first shown that these 2 extremes are related to very different production types of capitules, rather simultaneous in the panicle pole and staged in time for the cyme pole. It results that under conditions of foreseeable rainfalls, the panicle system should be favored, while the cyme system would be it under unforeseeable climates. Statistics on the proportions of species of the pole cyme in 21 localities of Morocco make it possible to generalize these assumptions.

Keywords

anthele, arid climate, Asteraceae, cyme, inflorescence, rainfall uncertainty

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