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http://dx.doi.org/10.9715/KILA.2012.40.5.001

The Effect of UV-B Irradiation and Far-red Light Reduction on the Growth of Laurus nobilis in Indoor  

Fujiwara, Keisuke (Graduate School of Agriculture, Tokyo University of Agriculture and Technology)
Toda, Hiroto (Institute of Symbiotic Science and Technology, Tokyo University of Agriculture and Technology)
Choi, Dong-Su (Institute of Symbiotic Science and Technology, Tokyo University of Agriculture and Technology)
Publication Information
Journal of the Korean Institute of Landscape Architecture / v.40, no.5, 2012 , pp. 1-7 More about this Journal
Abstract
The main purpose of this research is to evaluate the effect of light quality on the growth and physiological activities of Laurus nobilis plants growing indoors, the L. nobilis seedlings were grown under four types of lighting for 180 days. The seedlings were grown under 4 different treatments((n=9 seedlings per treatment): control, control supplemental UV-B irradiated(+UV), FR reduced(-FR) and simultaneously supplemental UV-B irradiated and FR reduced(+UV-FR)). It was found that UV-B irradiation(+UV) reduced dry weight and leaf area, and increased leaf thickness and the amount of UV-absorbing compounds per unit leaf area. In contrast, a reduction in far-red(FR) light did not affect any of these parameters. Interestingly, however, the elongation growth and net photosynthetic rate of the L. nobilis seedlings grown under simultaneous UV-B irradiation and FR reduction(+UV-FR) were significantly decreased than the control treatment. From these results, it is concluded that the light quality has a large effect on the indoor growth of L. nobilis. This study can suggest basic information for managed in the L. nobilis in indoor using light quality.
Keywords
Light Quality; Photosynthesis; UV-Absorbing Compounds; Interior Plant;
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