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Effects of Indoor Light Intensity on the Growth Characteristics of $Distylium$ $racemosum$, $Osmanthus$ $heterophyllus$ and $Damnacanthus$ $indicus$  

Song, Eun-Young (Agricultural Research Center for Climate Change)
Kim, Seong-Cheol (Agricultural Research Center for Climate Change)
Chun, Seung-Jong (Agricultural Research Center for Climate Change)
Lim, Chan-Kyu (Agricultural Research Center for Climate Change)
Kim, Mi-Sun (Agricultural Research Center for Climate Change)
Kim, Chun-Hwan (Agricultural Research Center for Climate Change)
Ro, Na-Young (National Agrobiodiversity Center)
Publication Information
Journal of Bio-Environment Control / v.21, no.1, 2012 , pp. 66-73 More about this Journal
Abstract
This study was conducted to develope new indoor plants and to investigate the effects of light intensity on the growth of $Distylium$ $racemosum$, $Osmanthus$ $heterophyllus$ and $Damnacanthus$ $indicus$ under 100 lux, 1,000 lux and 2,500 lux fluorescent lighting for six months in the environment-controlled growth chambers. 1. $Distylium$ $racemosum$ : Most of $Distylium$ $racemosum$ under 100 lux light intensity were blighted in two months, whereas it was 100% of survival under 1,000 lux and 2,500 lux after six months. Plant height, number of leaf, leaf width and leaf length became higher as light intensity increased. The plants maintained under 2,500 lux showed the greatest plant height and leaf number. 2. $Osmanthus$ $heterophyllus$ : $Osmanthus$ $heterophyllus$ under 100 lux light intensity were blighted in two months, whereas it was 100% of survival under 1,000 lux and 2,500 lux after six months. However, under 1,000 lux, it paused plant height and was not increased in leaf number any more. A plant growth status showed the highest value under 2,500 lux in all conditions. 3. $Damnacanthus$ $indicus$ : $Damnacanthus$ $indicus$ was defoliated and blighted under 100 lux light intensity in two months, whereas it was grown properly with 1,000 lux or above. However, the growth under 2,500 lux of $Damnacanthus$ $indicus$ was superior to other treatments. But, $Damnacanthus$ $indicus$ under 1,000 lux after 6 months was more favorable chlorophyll contents, leaf length and leaf width than 2,500 lux. As increasing slightly of chlorophyll contents and leaf growth under 1,000 lux, $Damnacanthus$ $indicus$ could be utilized highly to the indoor ornamental plant.
Keywords
Damnacanthus indicus; Distylium racemosum; growth characteristics; light intensity; Osmanthus heterophyllus;
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