Evaluation of Tarom-Mahali Rice Mutant Lines (M6) to Salinity Stress in Germination Stage

In order to evaluate the response of Tarom-mahali rice mutant lines to salinity in germination stage, study carried out as factorial experiment in a completely randomized design with three replications. Rice genotypes were includind 33 tarom-mahali mutant lines (M6 generation) and Hassani (tolerance), Tarom-mahali, Tarom Jelodar, Binam and IR29 (sensitive) cultivars. Salinity levels were including zero, 4, 8 and 12 dS/m. Length of shoot, length of radicle, shoot to radicle ratio, shoot dry weight, radicle dry weight, germination percentage and rate traits were measured. Salinity had a significant effect on all of the studied traits.Results showed that germination percentage and rates were decreased by the increase of salinity levels and tolerant genotypes had a more germinate. Based on the results, the lines studied in salinity of 12 dS/m were sensitive to salinity. But in salinity levels of 4 and 8 dS/m according to the characteristics measured, lines 1, 7, 3, 5, 2, 6, 15, 8, 4, 9 and 10 were tolerance to salinity. Also lines of 25 and 26 were sensitive to salinity.