Abstract
In four grasspea varieties include ardabil, sharekord, mashhad and zanjan, the effects of different salinity concentrations on seed germination percent, proline concentration, malondialdehyde (MDA), germination index, radicle and hypocotyl length and weight were studied. Result showed that salinity had significant effects on seed germination percentage and germination index. The most and least of germination percentage were observed in 6 and 18 dS m(-1), respectively. Salinity had significantly effect on radicle and hypocotyl length, dry and fresh weight, MDA and proline concentration of seedlings. Salinity had not effect on dry weight of seedling. Increasing salinity reduced radicle and hypocotyl length, dry and fresh weight of seedlings and enhanced proline and malondialdehyde in them. Sharkord cultivar had the most germination percentage at 18 dS m(-1) sodium chloride. Sharkord and ardabil varieties were the most tolerance and sensitive varieties to salinity stress, respectively.
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