Effect of hormonal preparation on seed germination and early growth of Pinus eldarica under salinity stress

In this investigation effect of hormonal preparation on seed germination and early growth of Pinus eldarica Medw. under salinity stress was examined. The seeds were treated with salicylic acid (0 (control)، 0/5، 1 and 2 mM، 72 hours) and following the imbibing to NaCl (0، 40، 120، 200 and 280 mM) placed in germinator (20°C) for 40 days. Germination in non-treated seeds was ceased in osmotic potentials >120 mM but it continued to 280 mM osmotic potential in treated seeds. In most salinity levels the greatest seed germination and germination energy، and in all salinity levels، the maximum of germination speed and vigor index allocated to 1 mM salicylic acid. These findings imply that for plantation of P. eldarica on saline soils it is better that the seeds before sowing in nurseries، with salicylic acid، particularly with 1 mM solution are treated