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Effect of Different Light Spectra on Adaptation and Growth Characteristics of Tissue Culture Plantlets of Three Cultivars of Begonia rex
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Ali Rezapour   , Maryam Dehestani-ardakani , Alireza Ghaderi |
| Department of Horticultural Science, Faculty of Agriculture & Natural Resources, Ardakan University, P.O. Box 184, Ardakan, Iran. |
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Abstract: (273 Views) |
Begonia is one of the most popular indoor ornamental plants. Complementary lights with different light spectra have an important role in the growth and development of plants by affecting the photosynthesis of plants. In the present study, the adaptation and growth characteristics of tissue culture plantlets of three cultivars of Begonia rex were investigated under different light spectra. In this experiment, leaf explants of three cultivars of Begonia rex (‘Silver Dollar’, ‘Jurassic’ and ‘Silver King’) were cultured in MS medium containing
1 mg L-1 benzyl adenine+1 mg L-1 α-naphthalene acetic acid and after eight weeks they were transferred to the culture medium containing gibberellic acid. After proliferation and rooting, plantlets were transferred to pots containing perlite and cocopeat (1:1) under different light spectra including white, blue, red and blue+red. Results revealed that all plants showed 100% adaptation in all light spectra. In ‘Silver Dollar’ and ‘Silver King’ cultivars, the highest amount of height (9.5 and 8.75 cm, respectively), root length (7.23 and 5.90 cm, respectively), dry weight (0.6 and 0.43g, respectively) and carotenoid (11.96 and 12.84 mg g-1 F.W, respectively) were obtained in white light spectrum. The maximum root length (11.36 cm), dry weight (0.42 g) and leaf carotenoid (12.84 mg g-1 F.W) was gained in the ‘Jurassic’ cultivar in the blue light spectrum. Generally, growing begonia ‘Jurassic’ under blue light and ‘Silver Dollar’ and ‘Silver King’ begonias under white light spectrum leads to improvement of their adaptation and growth characteristics.
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| Keywords: Begonia rex, light emitting diodes, light quality, supplementary light, white light |
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Full-Text [PDF 497 kb]
(61 Downloads)
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Type of Study: Research |
Subject:
Ornamental plants
Received: 2023/07/31 | Accepted: 2023/12/17 | Published: 2025/02/9
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