The genetic development for salt tolerance in wheat is very important approach for the plant breeder to overcome salinity problem. Estimation of salt tolerance by two selected genotypes of wheat (4H, N5) was conducted in plastic house as compared with the local cultivars Tamoz 2 to know the development that happened in salt tolerance in these genotypes through the plant breeding programs. The experiment was conducted in pots using four salinity levels (2, 5, 10, 15)ds/m. The experimental design was RCBD with three blocks. Results indicated that both selected genotypes were significantly superior in all measured characters to check cultivar at all salinity levels. There were differences between the two selected genotypes in different traits, but not significant especially at high salinity levels. At these salinity levels, the selected genotypes had more growth in shoots and roots. The differences between the two selected genotypes and the check cultivar in all characters increased in high salinity level. In conclusion, there were genetically improvements with aspect to salt tolerance achieved in selected genotypes through breeding and improvement programs.

This study was aimed to evaluate the antimicrobial activity of the leaf extracts of Melia azedarach L. plant against different pathogenic microorganisms such as (Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli, klebsilla sp., Candida albicans). Two plant extracts (Aqueous and ethanolic) under four different concentrations (25, 50, 75, 100) mg/ml were used by Agar-well diffusion method. Chemical detection of extract showed that the extracts contain tannins, flavonoids, terpins, steriods, alkaloids, and saponins. Aqueous leaf extract showed no effect against all tested microorganisms at (25, 50, 75, 100) mg/ml concentration except Candida albicans which was sensitive to 100mg/ml concentration. While Ethanolic (80%) leaf extract showed sensitivity on Staphylococcus aureus at 100mg/ml concentration.