Roll of Poly Amines (Spermidine and Putrescine) on Protein, Chlorophyll and Phenolic Compounds in Wheat (Triticum aestivum L.) Under Salinity Stress

ABSTRACT: Salinity stress as a major adverse factor can lower leaf water potential, leading to reduced turgor and some other responses, and ultimately lower crop productivity in arid and semiarid zones. In order to, investigate effects of different concentrations of poly amines spermidine and putrescine on germination of wheat under salinity stress, this experiment was conducted as factorial based on completely randomized design with two factors include salinity and poly amines level, in biology laboratory of Islamic Azad University of Tonekabon Branch in spring of 2013. First factor was salinity level including 50 mmol of NaCl and the second factor was poly amines level including 0/5 mmol of spermidine and putrescine concentration. NaCl was reduced chlorophyll and protein concentration but poly amines improved chlorophyll and protein concentration under salinity stress in root and shoot. Phenolic compounds levels was decreased in root under salinity and poly amines treatment but in root not change. Results of this experiment indicated that poly amines reduction of destructive effects of salinity stress in wheat seedlings.