تاثیر هیدروپرایمینگ و اسموپرایمینگ بر شاخص های جوانه زنی گیاه دارویی زیره سبز (.Cuminum cyminum L) تحت تنش شوری

The purpose of this study was to investigate the effect of duration and priming on germination and seedling growth of cumin (cuminum cyminum L.) seeds under salinity stress .This experiment was carried out as a factorial in a randomized complete block design with four replications and pre-treatments are include control, hydropriming at 12 and 24 hours and Osmopriming ( potassium nitrate 5 / 0 , 1 , 2 and 4% ) at 12 and 24 hours. 4 salinity levels of 0, 4, 8 and 12 dS/m were applied. The results showed that maximum germination percentage related to Hydropriming treated for 24 hrs and salinity levels 8 as well as KNO3 1% treated 24 hours and salinity levels 0. overall germination percentage decreased with increasing salinity levels and as well as all the priming treatments had rising trend on germination percentage compared to control. graphs suggest that compared priming time together has no significant effect on germination percentage. but priming treatments compared with the control has significant effect on germination.