Effect NaCl and Interaction between NaCl & CaCl2 and its effect in germination and growth of sedlings Hordeum vulgare L and Triticum aestivum L

Abstract

The study included two stages: First by planting seeds in petri dishas to investigate the effect of NaCl which included different(0 ،20 ،40 ،75 ،90 ،150)mM and interaction of NaCl & CaCl2 included (1 ،2 ،6 ،12 ،30)mM in germination and speed ratio of To plants Triticum astivum L Rihane 03 and Hordeum vulgare Alkfra seeds and some growth parameters of seedlings namely length of shoot and root system , fresh and dry weight plant. second stage by using the sand soil. to study the content of chlorophyll and carotene. The results showed that increasing salinity caused decreasing germination rate and length of shoot and root system specially at 90,150 mM. also, the results shown Adding calcium to growth medium reduced negative effects of salinity in improved physiological and morphological parameters of plants specially at12,30 mM concentration which given highest increase ratio, which indicate to abilityof calcium utilisation to reduce salinity injure .