La variabilite chimique de l'huile essentielle chez Teucrium puechiae Greuter et Burdet sur le littoral Languedocien (France) | The chemical variability of essential oils in Teuerium puechiae Greuter and Burdet on the Languedoc Coast (France)
1994
Allain, P. | El Oualidi, J. | Puech, S. | Pellecuer, J.
The composition of the essential oil of Teucrium puechiae Greuter and Burdet (Lamiaceae), shows no essential oil plasticity and, on the other hand, a very low chemical polymorphism. This small intrapopulational qualitative variability is probably the result of an adaptation to the environmental variation in Languedoc (French Mediterranean coast). However, the mode and growth rate, connected to the perturbations in dune ecology, have an effect on the quality of the essential oil. The natural selection seems to act upon the quantitative proportional aspect of the essential oil in seedling and young plants, by favouring the precocious elaboration of sesquiterpenes (terminal products).
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