Document Type : Full Paper
Authors
1
Ph. D. Candidate, Islamic Azad University, Science and Research Branch, Tehran, Iran
2
Professor, Research Institute of Forests and Rangelands, Agricultural Research Education and Extension Organization (AREEO), Tehran, Iran
3
Assistant Professor, Research Institute of Forests and Rangelands, Agricultural Research Education and Extension Organization (AREEO), Tehran, Iran
4
Assistant Professor, Islamic Azad University, Science and Research Branch, Tehran, Iran
Abstract
Satureja sahandica is one of the endemic Iranian medicinal plants which, has application in pharmaceutical, food, cosmetic and sanitary industries and has high agricultural importance due to its high tolerance to drought stress and production capacity in rainfed areas. In order to investigate the changes in the physiological traits of Satureja sahandica, this research was carried out in two years under field conditions with split plot design in three replications. Drought stress considered as main slot at four levels (full irrigation and interupted irrigation at shoot, budding and 50% flowering stages) and inoculation with mycorhiza as sub plot at four levels ( non-use of bio fertilizer (control), Glomus intraradices, Glomus mosseae, and Glomus mosseae + Glomus intraradices). The results showed iteraction effect of year * drought stress * mycorrhiza at 1% level on peroxidase and polyphenol oxidase and percentage of essential oil was significant. Mean comparison of traits showed that catalase, superoxide dismutase, peroxidase and total phenol were the highest in the second year. The highest amount of chlorophyll b, total chlorophyll, malondialdehyde, soluble sugar was obtained in drought stress at stem elongation. The highest superoxide dismutase, proline, and total phenol belonged todrought stress at 50% flowering. The highest percentage of essential oil (1.87%) obtained in use of both species of mycorrhiza. So using bio fertilizers can reduced effects of drought stress.
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