Volume 9, Issue 37 (vol. 9, no. 37- august and september 2020)                   j.plant proc. func. 2020, 9(37): 59-66 | Back to browse issues page

XML Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

karimi M, mohamadi M. Effect of exogenous melatonin on growth, electrolyte leakage and antioxidant enzyme activity in rosemary under salinity stress. j.plant proc. func.. 2020; 9 (37) :59-66
URL: http://jispp.iut.ac.ir/article-1-1372-en.html
1- Assistant professor, Department of Horticultural Sciences, Faculty of crop Sciences, Sari Agricultural Sciences and Natural Resources University, Sari , karimi.sanru@gmail.com
2- MSc student, Department of Horticultural Sciences, Faculty of crop Sciences, Sari Agricultural Sciences and Natural Resources University
Abstract:   (210 Views)

Melatonin is a new plant hormone that plays an important role in stress tolerance. For investigation the effect of exogenous application of melatonin on salt tolerance in rosemary (Rosmarinus officinalis L.), a factorial experiment was conducted in a completely randomized design with three replications. The first factor was melatonin (50, 100 µM) and the second factor was salinity stress (6, 9, 12 ds m-1). Water was used for control treatment. In the treated plants with concentrations of 6, 9 and 12 dsm-1 NaCl, stem height decreased compared to the control. Melatonin treatment (100 μM) reduced the effects of NaCl stress. 100 μM melatonin increased leaf growth compared to the control. The highest activity of SOD and POD was recorded in pretreatment plants with 50 and 100 μM melatonin. Melatonin prevented the reduction of chlorophyll content due to salt stress. The lowest ion leakage was related to 100 μM melatonin in control, 6 and 9 dsm-1 NaCl. Also, the highest reduction of electrolyte leakage (with 28.5% reduction) was related to 100 μM MT at 12 dsm-1NaCl. According to the results, 100 μM melatonin was more effective in reducing the effects of salinity stress.
Full-Text [PDF 603 kb]   (82 Downloads)    
Type of Study: Research | Subject: Salt Stress
Received: 2020/01/21 | Accepted: 2020/03/17 | Published: 2020/09/20

Add your comments about this article : Your username or Email:
CAPTCHA

Send email to the article author


© 2021 All Rights Reserved | Journal of Plant Process and Function

Designed & Developed by : Yektaweb