The study of salinity and drought stress effects on three range species Agropyron intermedium,Avena barbata and Panicum antidotale from Iran

摘要

Stress is considered to be a significant deviation from optimal conditions of life.The salinity is usually resulted in drought and most of the plants can tolerate a limited amount of salinity and drought, or else it will reduce the function of plant linearly (Jafari, 2000).Salinity inhibition of plant growth is the result of osmotic and ionic effects and the different plant species have developed different mechanisms to cope with these effects (Munns,2002).