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Effect of foliar spray with different concentrations of calcium silicate on the performance and quality of two cut rose flowers
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Saeed Khosravi   , Ali Tehranifar * , Yahya Selahvarzi , Amir Hossein Khoshgoftarmanesh , Leyla Cheheltanan |
| Ferdowsi University of Mashhad |
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Abstract: (35 Views) |
Roses are among the most important cut flowers worldwide. Nutrients play an important role in improving the performance and quality of cut flowers, including roses. Therefore, this research was designed to evaluate the effect of pre-harvest foliar spray with different concentrations of calcium silicate on the growth and vase life of rose flowers. For this purpose, an experimental trial was conducted in a factorial experiment based on a randomized complete design with two factors: different concentrations of calcium silicate (0%, 50%, and 100%) applied to two popular rose cultivars, Samurai and Jumilia, with 6 replications. The results indicated that foliar application of calcium silicate had a significant effect on improving flower diameter and stem diameter in the Jumilia and Samurai cultivars. Additionally, stem length in the Jumilia cultivar and leaf area in the Samurai cultivar, were influenced by calcium silicate at 100%, but calcium silicate did not have a significant effect on the dry weight to fresh weight ratio of stems and roots in rose cultivars. The foliar application of 100% calcium silicate solution in the Jumilia cultivar resulted in a 3.32% increase in the number of flower branches. The rate of photosynthesis and transpiration significantly increased in Jumilia and Samurai cultivars treated with calcium silicate compared to the control. However, there was no significant difference between the two concentrations of 50% and 100% calcium silicate. Foliar application of calcium silicate led to a significant increase in calcium concentration in the leaves and roots of Jumilia and Samurai cultivars. This increase was 30% and 13.8%, respectively, for the Jumilia cultivar and 92% and 8.5%, respectively, for the Samurai cultivar when using 100% calcium silicate concentration compared to the corresponding control treatment. Calcium silicate caused an increase in the activity of antioxidant enzymes such as superoxide dismutase, catalase, and peroxidase in Jumilia and Samurai cultivars. Additionally, in the Samurai cultivar, the activity levels of superoxide dismutase and peroxidase enzymes did not differ significantly between the 50% and 100% calcium silicate concentrations. Calcium silicate at a concentration of 100% resulted in a 22.5% and 28.4% increase in vase life in Samurai and Jumilia cultivars, respectively. However, there was no significant difference between the two concentrations of 50% and 100% calcium silicate. Foliar application of calcium silicate, increased the fresh weight of harvested flowers and delayed subsequent weight loss. This decrease was more severe in the control group of both Samurai and Jumilia cultivars, and ultimately, after 10 days from the time of harvesting, the fresh weight of untreated flowers decreased to less than the weight measured at the time of harvest.
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| Keywords: Antioxidant enzymes, calcium, photosynthesis, rose |
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Type of Study: Research |
Subject:
Special
Received: 2024/03/19 | Accepted: 2024/09/9 | Published: 2025/09/28
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