Dracocephalum kotschyi Boiss. is a herbaceous wild medicinal plant native to Iran. Due to high degree
of seed dormancy, seeds always show a low germination rate. In this study, different treatments were
compared to overcome seed dormancy. Different chemical scarifications, including dilution in
concentrated sulfuric acid for 15 minutes, culturing seeds in gibberelic acid, 6-benzylaminopurine
(BAP) and Kinetin, chilling at 4°C for 1, 2, 3 and 4 weeks and 25°C for 4 weeks were studied. Results
showed that chemical scarification treatment using sulfuric acid for 15 minutes and applications of
BAP hormone were efficient in promoting seed germination.
کلید واژگان :
Dracocephalum kotschyi; Dormancy; Chilling; Seed germination; Chemical scarification
