بررسی اثرات زمان، دما و شرایط نوری بر رشد جنین گلپر (Heracleum transcaucasicum)

Golpar is one of the most important medicinal plants that is close to extinction. The seed are not able to germinate because of morphophysiological dormancy. The objective of this project was to evaluate the effects of time, temperature and light condition on Golpar (Heracleum transcaucasicum) embryo growth. The experiment was designed as a factorial in randomized design with at the Iranian Research Organization for Science and Technology (IROST) in 2013. Factors were 1) temperature (5 and 230C) 2) light conditions (light and darkness) 3) length of incubation (2,4,6,8,10 and 12 weeks). The interaction of temperature and light conditions showed that in the darkness the embryo length was longer in 50C compared to 230C. The maximum embryo length (2mm) was recorded in light and 50C. The interaction of light conditions and time of incubation revealed that embryo length in light and after 12 weeks, increased by 45 percent compared to darkness. The interaction of temperature and time of incubation sowed that the embryo length did not changed significantly between 2 to 8weeks. However after 10 and 12 weeks of incubation in 50C, the embryo length was significantly higher than 230C. The maximum embryo length was observed in 50C and after 10 and 12 weeks of incubation and the minimum was observed in 230C after 2 weeks of incubation