Plants are sensitive to environmental factors the most at the germination stage. This experiment was conducted to assess the germination of camphor populations collected from different habitats in Iran. The experiment was conducted in factorial in the form of a completely randomized design with three replications. Treatments included population (from Arak, Hamedan and Shahrekord habitats), temperature (10, 25 and 35oC) and drought stress induced by polyethylene glycol (0, -2, -4, -6, -8, -10 and -12 osmotic potential bars). Results indicated the significant effect of habitat, temperature and drought on all the measured traits. The interactions had also a significant effect on most of the measured traits. Seeds of samples collected from Shahrekord habitat had the highest germination. Among the temperature treatments, 25oC was the most favorable for seeds germination. Results also indicated that increasing drought stress level decreased seed germination.
