بررسي اثر پيش تيمار پرتو فرابنفش C بر جوانه زني بذر و برخي از پارامترهاي بيوشيميايي دو رقم گندم (Triticum aestivum L.) تحت تنش شوري

The effect of pre-treatment with ultraviolet radiation-C on seed germination and some biochemical parameters of two wheat cultivars under salt stress

Salt stress is accounted as a factor which limits plant growth and development. Ultraviolet radiation also has a major morphological and physiological effects on plants. In this research, the effect of pre-treatment with UV-C on seed germination, mean time required for seed germination, sugar, praline and ion leakage in shoot and roots in two wheat cultivars, Dez and Darab under salt stress were investigated. The results showed that salt stress reduced seed germination percentage but increased the mean time required for germination. Meanwhile, pretreatment of seeds with UV-C radiation ameliorated the reduction of seed germination caused by salt stress. Also, the time required for seed germination was improved. Salt stress increased sugar, proline and ion leakage in stems and roots of both cultivars. Pretreatment with UV-C had significant effect on proline content and ion leakage and ameliorated the negative effect of salt stress