Our study was devoted to the phenotypic characterization of antibio-resistant salmonella strains with a view to identify them and to study their susceptibility to alicaments particularly Brassica oleracea, Allium cepa, Allium schoenoprasum and honey.By comparing the phenotypic characterization (morphological and biochemical) of our 7 salmonella strains using the key of Monica 2014, we found out 42.86% Salmonella paratyphi A and 57.14 % of Salmonella typhi.Extraction of the alicaments by the aromatogram method permitted us to obtain the following results:The white onion extract showed an antibacterial activity of 8 mm diameter inhibition zones on S1 strain and 18 mm diameter on S7 strain while the ethanolic extract of Allium schoenoprasum showed an antibacterial activity of 2 mm diameter inhibition zones on strains S2 and S3. The concentrated white onion extract showed an antibacterial activity of 4 mm diameter inhibition zone on S2 strain while the red onion showed 4 mm diameter inhibition zones on S2 strain. Strains S2 and S5 and Allium schoenoprasum showed an antibacterial activity of the inhibition zones of 12 mm and 14 mm diameters on strains S6 and S7, and finally the honey showed an antibacterial activity of the zones of inhibitions of 21 mm diameter on strain S1, and 2 mm diameter on strains S2, S3 and S6.

This work aims to do the study of the genetic variability of the local tomato. The results showed that genetic diversity of local tomatoes is summed up into 6 botanical forms (round Red, round Violet, flat Red, flat Violet, elongated Red, and elongated Violet) among which round Red phenotype was the most represented (56.5%).

As regards the study of in vitro pollinic fertility, the best conditions for germination and elongation of the pollinic tube are obtained at 20 g/l sucrose, 0.62 g/l of boracic. On the whole, foreign varieties (Carotina, Marmande, Makis, Opal, Roma) have a weak indicator of viability as compared to local varieties. Fertility of different flowers analyzed according to their position on the plant, is generally decreasing from bottom to top. These results could explain some cases of failure of fertilization when crossing-over different varieties of tomatoes. The results also show the importance of choice of the flower used when sampling pollen grains.