Study and research seed dormancy methods breakage and measurement of germination indices in different population seed of Ferula persica var. persica

Ferula persica var. persica is an Iranian endemic medicinal plant that belongs to Apiaceae family. Seeds of this plant have a long period of dormancy. Therefore, experimental methods, which decrease seed dormancy period, could be effective in the seed germination rate and also in revival of the plant. Since the treatment of cold and soaking is beneficial for seed dormancy breaking of other Apiaceae plants, thus the effect of humid chilling, dry chilling and seed brushing before chilling evaluated on five population, Ferula persica var. persica in form of completely randomized factorial with four replication. After measuring the percentage of seed purification, data analysis revealed that the Vitality and its related indices (Mean Daily Germination, Daily Germination Speeds and Mean Time Germination) show a significant difference in one percent probability level in the three mentioned factors. In case of the interplay, the treatment F4Z0 (the seed of F4 in the humid chilling without brushing treatment) showed higher vitality and less MDG than the other treatments. In case of DGS index, the F4Z0 and F5Z0 have the least speed and the most quantity. In case of the simple affects, humid chilling was the best method for breaking seed dormancy in this species. Since repetitive brushing of the seeds before planting results in destroying their coating, thus it doesnt have a positive effect on Germination.