The effect of elements accumulation on salinity tolerance in seven genotype durum wheat (Triticum turgidum L.) collected from the of Middle East

Salinity affects plant growth through ionic and osmotic effects. In this project, the effects of elements accumulation on the salinity tolerance in seven genotypes of durum wheat (Triticum turgidum L. susp durum) collected from the region of Middle East were studied under greenhouse condition. Seeds of durum wheat genotypes (ICDW1026 and ICDW19764 from Turkey, ICDW751 and ICDW19697 from Syria, ICDW859 and ICDW324 from Iran, ICDW446 from Egypt) were planted under hydroponics condition. Salt stress was initiated in three-leaf stage and applied salt treatments were 0 (control), 50, 100, 150, 200, and 300 mM NaCl. The results showed that all genotypes did not grow in concentrations of 200 and 300 mM NaCl in medium. All genotypes showed decrease of growth in concentration of 150 mM NaCl. Salinity affected accumulations of elements in shoot and root. In general, the results showed that among seven genotype, ICDW751 with low accumulations of Na+ and Cl- and high accumulations of K+ and Ca2+ in shoot with higher dry weight, is salt tolerant genotype and ICDW324 with high accumulations of Na+ and Cl- and low accumulations of K+ and Ca2+ in shoot containing lower dry weight, is salt sensitive genotypes.