تأثير ملوحة التربة على تواجد بكتيريا العقد الجذرية و انتشار نبات النفل (الفضة، Medicago)‎ المتعايش معها في بعض الأراضي المالحة في الجزائر

الملخص EN

The study showed that soil salinity has an important role in the presenceof nodule bacteria (Rizobium) and the dispersion of alfalfa plant (Medicago) that exists symbiotically with the bacteria in this region.

The results showed, whenever the salinity increases in the soil; the number of bacteria decreases, and consequently, the alfalfa plant disappears in regions of high salinity.

The eixstence of this bacteria in saline soil proved that the Rhizobium is more tolerant to salinity than the host plant.

The isolated strains from the saline soil were able to grow in a medium containes 1.1 mol of the sodium chloride.

They formed nodules after 18 days from the inoculation of the medicago plants.

Therefore, such strains could be used as an inoculum for legumes plants in saline soils.