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Effect of different concentrations of gibberellic acid on flowering and photosynthetic pigments of peace lily (Spathiphyllum wallisii Regel)
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Tayebeh Motevali Shahrestani *   , Moazzam Hassanpour Asil |
| Department of Horticultural Sciences, Faculty of Agricultural Sciences, University of Guilan, Rasht |
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Abstract: (743 Views) |
Gibberellin, a plant growth regulator, significantly impacts ornamental plant morphology, physiology, quantity, and quality, especially in flowering plants. This study evaluated the effect of varying Gibberellic Acid (GA3) concentrations on the morphological and physiological characteristics of peace lilies (Spathiphyllum wallisii) during the flowering stage under greenhouse conditions in Northern Iran. A completely randomized design with three replications was employed, testing GA3 concentrations of 50, 100, and 200 mgL-1 against a control. Results indicated that higher GA3 levels significantly improved measured traits (p ≤ 0.05 and p ≤ 0.01). The 200 mgL-1 GA treatment maximized trait values and reduced days to flowering (102 days). Compared to the control, this treatment significantly increased pedicel length (58.33%), pedicel diameter (44.86%), number of flowers (4), flower spathe length (28.82%), spathe width (50%), chlorophyll a (13.48%), chlorophyll b (19.79%), total chlorophyll (17.75%), and carotenoid content (16.39%). Thus, gibberellin plays a crucial role in enhancing flowering traits, with 200 mgL-1 GA3 proving most effective and therefore recommended.
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| Keywords: Gibberellin, Growth regulators, Morphological traits, Spathe |
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Full-Text [PDF 1101 kb]
(93 Downloads)
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Type of Study: Research |
Subject:
Special
Received: 2024/07/12 | Accepted: 2024/11/15 | Published: 2025/04/22
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