Document Type : Research Paper
Author
Department of Medicinal plants, Islamic Azad University of Kashmar
Abstract
Hyssop, as one of the most important medicinal plants, is a perennial and woody plant which belongs to Lamiaceae family. It is used for treatment of respiratory system diseases like cough, pertussis, bronchitis and asthma. Hyssop (Hyssopus officinalis L.) essence has antibacterial and antifungal properties and has different applications in hygiene, cosmetic and food industries. In order to determine the effects of salinity and drought stress on stimulation of germination on Hyssop, separate experiments in a randomized complete block design with 4 replications were conducted. Treatment included 4 levels of salinity and 4 levels of drought induced to seedling by NaCl and Poly Ethylene Glycol (PEG) 6000 respectively. Germination characters included rate and percentage and length of radicles were measured. Salinity caused a significant (P<1%) reduction in rate of germination and length of radicles but not in percentage of germination. Results indicated that rate of germination increased up to –3 bars and then decreased. Although percentage of germination was not affected by inducing salinity, the most of this character was on –6 bar level. Our results showed that rate and percentage of germination and length of radicles were significantly different on drought levels. In general, results of this study indicated that salinity stress induced between –3 and –6 bar could stimulate germination and optimize seedling establishment.
Keywords
)