Introduction. Algerian oases
are characterized by a diversification of local fruit species and
cultivars. However, this diversity is subject to erosion. To preserve
the genetic heritage, we undertook the first work on the inventory
of fruit species crops in the region of Touggourt in south-eastern
Algeria. Materials and methods. Our working methods
were based on surveys carried out on farms in the Oued Righ region
according to a questionnaire that met our objectives. For this,
we divided the study region into three zones and in each zone we
selected ten farms for the inventory of fruit species cultivated.
Results and discussion. The results of our investigations
allowed us to identify thirteen species, including four species
with a wide distribution (pomegranate tree, apricot tree, fig tree
and vine). The local genetic diversity of these species is little
known. The varieties or cultivars inventoried have local names given
by the farmers in the region according to certain morphological
characteristics of the fruit. We surveyed five cultivars for the
fig tree, two cultivars for the pomegranate tree, two cultivars
for the vine, and two apricot tree cultivars. The study of the biodiversity
of fruit trees in the Oued Righ region showed high richness of the
species and cultivars; some are local and others are endemic to
the region. Better knowledge of genetic diversity will begin with
tests of behavior and characterization of the different genotypes encountered
to dispel the ambiguities and to highlight the actual composition
of populations or varieties of different species.