نوع مقاله : مقاله تحقیقاتی
عنوان مقاله [English]
Plants growth in many parts of the world are influenced by biotic and abiotic environmental stresses. Agriculture in these area is done with higher costs and lower efficiency. Therefore, assessment of plant species is so necessary in terms of salt tolerance prior to planting in large-scale for development. In this regard, salinity stress on germination of Sorghum bicolor was carried out in a completely randomized design with four replications at molecular genetics and spectroscopy laboratory. Salinity treatments include zero (control), 150, 100, 150, 200, 250 and 300 mm, which were provided using Sodium Chloride. The results shown that salinity stress has reduced all studied traits (root and peduncle length, dry weight, and percentage and rate of germination). The results indicated that the highest percentage and rate of germination was recorded in the control treatment (without salinity) and by increased amount of salinity (100mm<), growth of peduncle and root was decreased in Sorghum bicolor. Generally, results of this study reveal high impact of salinity to reduce studied traits (root and peduncle length, dry weight, and percentage and rate of germination). Therefore, Sorghum bicolor cannot be considered as a plant with very high tolerance against salinity.