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Effects of silicon on antioxidant activity and the decrease of bending in cut gerbera (Gerbera jamesonii Bolus) flowers
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Javad Sadeghi Feragheh   , Homayoun Farahmand * , Fatemeh Nasibi , Rooholah Abdolshahi |
| Shiraz University |
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Abstract: (1349 Views) |
The cut flower industry is economically important across the world. Gerbera (Gerbera jamesonii Bolus) is one of the most popular cut flowers in Iran and worldwide and the improvement of its postharvest life is very important. Stem bending during the early stage of vase life is a critical problem in many cultivars of this flower. In this research, silicon as an antioxidant compound was used at 500 and 1000 micromolar concentrations, and the effects on some oxidative characteristics, antioxidant enzyme activity, phenylalanine ammonia-lyase (PAL), and polyphenol oxidase activity in three colors (Rosalin, Stanza, and Apollo) of cut gerbera flower were investigated. Histological studies also were performed by hand sections and light microscopy. Silicon application prolonged the vase life in all three cultivars of gerbera. The lowest vase life (6 days) was measured in the control treatment and the highest vase life (17.33 days) was gained in Rosalin using 1000 µM silicon. Meanwhile, a significant increase in the activity of antioxidant enzymes and PAL was detected, while polyphenol oxidase (PPO) activity and lipid peroxidation were significantly decreased. It seems that silicon improved the quality of gerbera cut flowers by scavenging free radical oxygen, preserving cell membrane integrity, decreasing PPO activity, and increasing the vascular and supporting tissue.
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| Keywords: Gerbera, Postharvest quality, Vase life |
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Full-Text [PDF 792 kb]
(320 Downloads)
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Type of Study: Research |
Subject:
Special
Received: 2022/08/13 | Accepted: 2023/01/28 | Published: 2024/01/27
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