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The effect of selenium foliar application on the morphophysiological characteristics and enzyme activities of English daisy (Bellis perennis) under water deficit stress
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Aliakbar Jabari   , Elham Danaee * |
| Islamic Azad University Garmsar Branch |
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Abstract: (269 Views) |
English daisy (Bellis perennis) is a perennial and autumn plant that is one of the best options for rock gardens, garden borders, and window pots due to its abundant flowers and long flowering period. Water deficit is one of the factors affecting the quantity and quality of plants. Today, various compounds are used to increase the resistance of plants to environmental stresses; one of these compounds is selenium, which increases the plant's tolerance to stress by increasing antioxidant compounds and enzymes. To investigate the effect of selenium foliar application on the growth, physiological and enzyme activity of English daisy (Bellis perennis) under water deficit stress, an experiment was conducted at Karaj city, Iran. The treatments included drought stress (control (no stress), 75, 50 and 25% field capacity) and foliar application of selenium in a form of selenat sodium (zero, 50 and 100 mg l-1). Water deficit stress was applied at the 6-8 leaf stage and selenium foliar application was performed in two stages, the first stage was carried out at 6-8 leaf stage and the second stage was done with a time interval of two weeks after the first stage foliar spraying, and finally sampling was done at the full flowering stage. The results showed that the treatments had significant effects on the evaluated traits. The highest fresh and dry weights of aerial parts (16.42-135.17 g), cell membrane stability index (84.35%) were observed in the treatment of control field capacity and selenium 50 mg l-1. The highest fresh and dry weights of roots (5.28-39.46 g), petal anthocyanin level (0.92 mg g-1 FW petal), protein (34.2 μg g-1 FW petal), catalase activity (68 5.1 enzyme units g-1 FW petal), superoxide dismutase (3.27 enzyme units g-1 FW petal) and peroxidase (10.32 enzyme units g-1 FW petal) were obtained in 75% fild capacity and 50 mg l-1 selenium. The highest total chlorophyll content (6.43 mg g-1 FW leaf) in the treatment of 50% field capacity and 50 mg l-1selenium and the highest amount of proline (37.45 mg g-1 DW leaf) in the treatment of 25% field capacity and selenium were observed at 100 mg l-1. According to the results of this research, it can be stated that selenium foliar application (50 mg l-1) in all levels of water deficit stress improved the growth, physiological characteristics and enzyme activities of English daisy (Bellis perennis) under water deficit stress. |
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| Keywords: Anthocyanin, Bellis perennis, Field capacity, Protein |
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Type of Study: Research |
Subject:
Special
Received: 2023/09/8 | Accepted: 2024/01/13 | Published: 2024/06/5
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