| چکیده انگلیسی مقاله |
In order to study the effects of different levels of salinity on germination components of wheat cultivars, a factorial experiment was conducted based on randomized complete block design with three replications. Experimental factors were wheat cultivar in eight levels (Saysons, Gaspard, Finkan, MV-17, Chamran, Sardari, Atila-4 and Azar-2) and six levels of salinity (0, 25, 50, 100, 150 and 200 Mm Nacl). Results indicated that salinity had significant effects on radicle length and dry weight, plumule length and dry weight, remained seed weight after germination, seedling weight, the longest radicle and plumule, number of radicle per seed, ratio of radicle weight to plumule weight and rate, uniformity and percentage of germination. All of these traits declined with increasing of salinity (except ratio of radicle weight to plumule weight, remain seed weight after germination and seedling weight). The highest ratio of radicle weight to plumule weight, remain seed weight after germination and seedling weight were recorded at salinity of 200 Mm Nacl. The cultivars showed significant effects on all of studied traits (except remaind seed weight after germination and seedling weight). Chamran cultavar showed the highest number of radicle per seed, ratio of radicle weight to plumule weight, rate and percentage of germination. The highest radicle length and the longest radicle obtained from Sardari cultivar while in Azar-2 cultivar it was vice versa in plumule. Atila-4 cultivar showed the highest radicle and plumule weight. It seems in all of studied cultivars, Chamran, Azar-2, Sardari and Atila-4 were more resistant to salinity stress compared to other cultivars, but it vise versa in Finkan, Gaspard and Saysons cultivars. So that, it was suggested application of Chamran, Azar-2, Sardari and Atila-4 under salinity condition compared to other cultivars. |