Foliar Sesquiterpene Variations in Natural Populations of Cupressus
dupreziana in Tassili N`Ajjer (Algeria)
Cupressus dupreziana A. Camus (Cupressaceae)
is an endemic species in the Tassili n`Ajjer (Algerian Central Sahara).
Terpenoid analysis were carried out on 160 trees of 12 natural populations
with a view to determining the intra-specific variability. Eighteen sesquiterpenes
were detected, including germacrene-D, which was found to be particularly
abundant. The terpenoid markers used made it possible to determine the
individual patterns of chemotypic variability. The variability of the
sesquiterpene composition confirms that genetic factors were not responsible
for the decrease in the numbers of this species. The main reason for this
decrease is probably the desertification of the Tassili n`Ajjer.
Cited References Fulltext