Effect of salinity on growth factors, proline, pigments and absorption of elements in shoot of four wild almond

Salinity is a major environmental stresses that Causes severe damage to crops and horticultural crops and also reduce plant biodiversity. Plantation of resistant species is one of the activity to cope on soil and water salinity. Therefore, the identification of salt tolerant species is inevitable. Site conditions of species can affect on plant resistance in the face of environmental stresses. Seeds of four species of wild almond (Amygdalus scoparia, A. arabica, A. elaegnifolia, A. haussknechtii) of three height classes were collected in Karebas site to determine the effect of altitude on the salinity tolerance of wild almond species. Factorial experiment in a completely randomized design with three replications (5 plants per replication) were chosed to determine the salinity torerance of two month almond seedling under salt stress by irrigation with different concentrations of sodium chloride solution whit five leveles (control, 25, 50, 75 and 100 mmol). The results showed that vegetative plant, pigments and plant biomass reducted and accumulation of proline increased by incrising the salt concentration. Amygdalus arabica was resistance species among the four species to salinity. Biomass, growth rate and plant pigments have been decreased and cocentraton of proline have been increased by increasing the altitude. The absorption of copper, zinc, iron, manganese, potassium have been decreased and absorption of magnesium, sodium, chlorine, nitrogen, phosphorus, and calcium increased by Increasing the salinity.