بررسی تغییرات پرولین در مرحله چهار برگی گیاه جو دوردیفه تحت تنش خشکی

Proline synthesis is increased under drought stress. Proline accumulation in leaves may decrease the osmotic potential and water potential of the cell and Provide continues water uptake for cell. Silicon is the second most common element in soil that leads to a substantial increase in the amount of proline in stress conditions. Accordingly, the effect of drought stress on proline content was studied in two line of two-row barley named CB 20315 (resistant) and CB-20213(sensitive) in four leaves stage in greenhouse. The experiment preformed in randomized factorial design in three treatments, control, drought and silicon-drought (sodium silicate 2 mg / 1kg), with three replication. Treatment of silicone caused an increase in the amount of proline. As a result of this study, it appears that Silicon probably has important role in physiological and metabolic changes in order to, enhance plants tolerance to drought stress.