In order to identify domestic rabbit populations in the departement of Tiaret, thirteen morphological descriptors were applied. This study was based only on the phenotypic variability, all breeds are were defined according to the international standards based on external appearance. quantitative traits were measured on 70 rabbits belonging to different agroecological localities (Steppic, Mountainous and Saharian). A comparison was carried out in order to identify differences and similarities between males and females. The baryometric characterization reveals a significant phenotypic diversity at the population studied. Multiple correspondence factor analysis (MCA) and ascending hierarchical classification (CAH) identified three distinguished classes. In general, the local rabbit has an average weight of 1.97 kg, an average body length of 28.8 cm and a chest measurement of 26.11 cm.

Acer campestre L. is a rarely silviculturally managed and poorly investigated European tree species which forms seminatural populations and can thus be considered as a model tree for studying post glacial colonisation and phylogeography. Herein, we studied the genetic structure of Acer campestre L. in order to investigate population and genetic diversity clines over the distribution range and for synthesizing the results into a post-Pleistocene range expansion hypothesis. We characterised the genetic diversity and population structure of 61 Acer campestre populations using 12 microsatellite markers. The three detected gene pools are structured geographically creating a longitudinal pattern corresponding with their proposed refugial origin. The results indicated a longitudinal population cline with three strong but highly admixed gene pools. Based on the possible signal from the structure results, a number of phylogeographic dispersal hypotheses were tested using approximate Bayesian computation, and this analysis supported the three refugia scenario with a simultaneous divergence prior to the last glacial maximum. Acer campestre shows a typical decrease in population diversity with northern and western distribution and signatures of surfing alleles in the western expansion axis in 2% of the included alleles. Acer campestre exhibits a high degree of admixture among populations and typical signatures of isolation by distance with no naturally delimited subpopulations. The population structure is rather impacted by geographically, than climatologically means with surfing alleles and alleles strongly limited to geographical areas. Our data also suggest that the population structure still today harbours signatures of post glacial migrations from Mediterranean as well as northern glacial refugia.

This study aims to investigate, the physic-ochemical characterization of Allium sativum, Allium cepa and Foenuculum vulgare. The analysis which carried out on these plants includes pH, titratable acidity, fiber, fat, sugars, soluble solids, pectin and protein. The results from the study of three medicinal plants, show that:  Allium sativum, present a low acid vegetable (6.10 ± 0.005), rich in water (63.67% ± 0.1131) and sugars (25.6g / 100g ± 0.034), its pectin content is (2.89 % ± 0.1619) and fiber (1.47% ± 0.007), but contains a low protein content of (0.04mg / ml ± 0.0028) and traces of lipids. Allium cepa had a low acid vegetable (5.42 ± 0.0707), rich in water (92.20% ± 0.0212), sugars (13.16g / 100g ± 0.1416), pectin (3.102% ± 0.0459), and fiber (2.12% ± 0.070). Its protein content (0.1mg / ml ± 0.007) was low, and traces of lipids. For, Foenuculum vulgare, a slightly acidic vegetable (6.02 ± 0.0057), highly rich in water (95.34% ± 0.00), sugars (16.80g / 100g ± 0.1983), dietary fiber (12.20% ± 0, 0785), and pectin (3.79% ± 0.07). However, contains low protein content (0.034mg / ml ± 0.0098), and traces of lipids. The results obtained from this study show that the three plants garlic, onion and fennel have a good chemical composition.