Fatahi, S., Khodabakhshzadeh, A. and Rostami Tobnag, G. 2020. Effects of putrescine application in culture medium in improving chamomile (Chamomilla recutita (L.) Rauschert.) tolerance to osmotic stress under in vitro conditions: Putrescine improves tolerance to osmotic stress . Advances in Horticultural Science. 34, 2 (Apr. 2020), 167–174. DOI:https://doi.org/10.13128/ahsc-7820.