The Journal "Agriculture and Forestry"
Časopis "Poljoprivreda i šumarstvo"
- Since 1955 -
Year 2021, Volume 67 Issue 2 (30.06.2021)
| Year : | 2021 |
| Volume : | 67 |
| Issue : | 2 (30.06.2021) |
| Authors : | Hamid MOHAMMADI, Mehdi AKHONDZADEH, Mehrnaz HATAMI |
| Title : | EXOGENOUSLY APPLIED 24-EPIBRASSINOLIDE MODULATES PHYSIOLOGICAL AND BIOCHEMICAL CONSTITUENTS IN LAVENDER (Lavandula angustifolia) PLANTS UNDER DROUGHT STRESS CONDITIONS |
| Abstract : | Drought is one of the most important environmental constraints that negatively affect the growth and yield of plants worldwide. Application of plant growth regulators such as brassinosteroids is a practical and alternative approach to ameliorate the drought-induced damages in plants. In the present research, the effect of exogenously applied EBL and various drought stress intensities on lavender plants were studied in a factorial field experiment at two locations in northeast of Iran. The results revealed that drought stress had negative impacts on shoot dry matter, and pigments content of lavender plants in both regions, however, EBL application led to improve in plant characteristics under drought stress. The greatest essential oils content and free proline content were observed in plants sprayed with EBL under drought stress conditions. Drought stress resulted in a significant increase in H2O2 and MDA content in plants, but the content of these oxidative stress markers was lower in plants sprayed with EBL compared to the non-sprayed plants. Drought stress increased the total phenol in plants. The major compounds of lavender EOs were α-thujene, γ-terpinene, linalool oxide, α-terpinolene, α-thujone, camphor and α- humulene. The foliar EBL application partially ameliorated the negative impacts of drought stress and improved the growth and morpho-physiological attributes of lavender plants along with their essential oil content and major constituents. |
| For citation : | Mohammadi, H., Akhondzadeh, M., Hatami, M.(2021): Exogenously applied 24-epibrassinolide modulates physiological and biochemical constituents in lavender (Lavandula angustifolia) plants under drought stress conditions. Agriculture and Forestry, 67 (2): 103-120 |
| Keywords : | Brassinolide, Drought stress, Essential oil, Lavandula angustifolia |
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