ISHS Acta Horticulturae 1037: International Symposium on New Technologies for Environment Control, Energy-Saving and Crop Production in Greenhouse and Plant Factory - Greensys 2013
THE LOWEST LIGHT INTENSITY OF COMPLEX LED MIXED RED AND FAR-RED LIGHT ON INHIBITION OF CHRYSANTHEMUM 'IWA NO HAKUSEN' |
| Authors: | Y. Liao, Y. Takai, A. Kato, K. Suzuki, D. Zhuang, R. Ogasawara, T. Shimazu, E. Kawamoto, H. Fukui |
| Keywords: | night break, floral bud differentiation |
| DOI: | 10.17660/ActaHortic.2014.1037.111 |
| Abstract:
Red (R) light of LED night break (NB) could inhibit floral bud differentiation on chrysanthemum cultivar ‘Jimba’, but not in cultivar ‘Iwa no hakusen’. Complex LED mixed red and far-red (R+FR) light of NB could inhibit floral bud differentiation on both cultivars. For the purpose of saving energy and using LED light effectively, we tested several treatments of different R+FR light intensities of NB lighting on cultivar ‘Iwa no hakusen’. The result showed that it could inhibit floral bud differentiation on ‘Iwa no hakusen’ by the NB of R+FR (630 nm + 735 nm) light which peak was at 0.15 + 0.15 µmol•m-2•s-1•nm-1 or 0.15+0.20 µmol•m-2•s-1•nm-1. | |
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