Influence of Salt Stress on Quality of Some Onion (Allium cepa L.) Local Landraces

Salinity is considered a significant factor affecting crop production and agricultural sustainability in arid and semi-arid region of the world, reducing the value and productivity of the affected land. From this reason the improvement of salt tolerance of cultivated species is a necessity  by capitalization of  the salt tolerance variability in local landraces of the same species or other species or by the “novo” creation of some varieties by different methods.