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http://dx.doi.org/10.12791/KSBEC.2014.23.4.263

Growth and Flowering of Standard Chrysanthemums according to the Light Source and Light Quality in Night Break Treatment  

Kwon, Young Soon (Floriculture Research Division, National Institute of Horticultural & Herbal Science, Rural Development Administration)
You, Bong Sik (Floriculture Research Division, National Institute of Horticultural & Herbal Science, Rural Development Administration)
Jung, Jae A (Floriculture Research Division, National Institute of Horticultural & Herbal Science, Rural Development Administration)
Park, Sang Kun (Floriculture Research Division, National Institute of Horticultural & Herbal Science, Rural Development Administration)
Shin, Hak Ki (Floriculture Research Division, National Institute of Horticultural & Herbal Science, Rural Development Administration)
Kil, Mi Jung (Floriculture Research Division, National Institute of Horticultural & Herbal Science, Rural Development Administration)
Publication Information
Journal of Bio-Environment Control / v.23, no.4, 2014 , pp. 263-268 More about this Journal
Abstract
This research was performed to investigate the effect of light source and light quality in night break treatment on the growth and flowering of standard chrysanthemum. It was processed 4 hours (22:00-02:00) night break using LED 590, 610, 630, 660, 680nm and fluorescent lamp (mixed light of 480+540+610nm) in standard chrysanthemum 'Baekma' and 'Jinba' for 40 days from transplanting. The days to flower budding from short-day treatment of 'Baekma' were the longgest at fluorescent treatment (21.3 days) and were the shorttest at LED 590nm treatment (15.8 days) among all treatments. The days to flower budding from short-day treatment of 'Jinba' was longger with 18.0 days, 17.8 days, and 17.7 days at the fluorescent, LED 610nm, and 660nm treatments. And it was the shortest with 15.1 days in LED 590nm treatment. Similarly, the days to flowering from short-day treatment of 'Baekma' was the longgest with 56.9 days at fluorescent treatment, and was the shorttest in 51.6 days about LED 590 nm treatment. The days to flowering from short-day treatment of 'Jinba' was longer at fluorescent (56.0 days) and LED 660nm (56.7 days) treatments and was shortest at LED 590nm (52.9 days) among all treatments. Therefore, inhibition of flower bud initiation and flowering were the most effective under fluorescent treatment in case of 'Baekma', and fluorescent and LED 660nm treatments in case of 'Jinba'. The length and weight of cut flower of 'Baekma' and 'Jinba' were most excellent in fluorescent treatment in which the floral differentiation suppression effect was the best. Consequently, as to the growth and flowering of standard chrysanthemum, the treatment which was suitable as the light source and light quality for night break is regarded as the fluorescent lamp, and also under LED 660nm up to a certain level.
Keywords
flower bud initiation; fluorescent; LED; wavelength;
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Times Cited By KSCI : 4  (Citation Analysis)
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