اثر تيمارهاي محيطي مختلف بر جوانه زني بذر سيكلامن ايراني CYCLAMEN PERSICUM MILL( )

Effect of different factors on seed germination of Persian cyclamen (Cyclamen persicum mill.)

In this study, the effect of different factors such as air temperature (16 ʹʹ and 20 °`), kind of bed cover (sand and black plastic), water temperature (5,10 and 50 °C) and light and darkness were investigated on germination of Persian cyclamen (Cvclamen persicum mill.) seeds. Trial was done according to completed random design with ten treatments and three repetitions and data were recorded for germination percentage, germination rate, the length of petioles, number of expanded leaves, number of leaflets and leaf area. Each unit in growth chamber and greenhouse was included pots with 5cm in diameter and contained 50 seeds of Cyclamen pensicum. The obtained data after 23 days analy zed and results showed significant differences between all factors. DCM treatment (Darkness, air temperature 16 °`, sand cover combined with hot water 50 °`) was chosen as best treatment and LCc treatment (light, air temperature 20 ° without any cover and cool water 5 °`) was the worst treatment in seed germination. When plantlets were transferred to the greenhouse evaluated and DCc (darkness, air temperature 16 °` and cool water 5 °`) and DCW (darkness, air temperature 16 and hot water 50 °`) without any significant differences in number of expanded leaves were the best treatments, but plantlets in DCc treatment showed lower leaf area. LTW (light, air temperature 20 °` and hot water 50 °`), LCM (light, air temperature 16 and sand cover) and LCW (light, air temperature 16 °° and sand cover and hot water 50 °`) without any significant differences were the worst treatments after transferring the plantlets to greenhouse.