본 연구는 광중단 처리에 있어서 광원 및 광질이 스탠다드 국화의 생육 및 개화에 미치는 영향을 알아보기 위해 수행하였다. 스탠다드 국화 ‘백마’, ‘신마’ 품종에 LED 590, 610, 630, 660, 680nm와 형광등 480+540 +610nm의 혼합광을 정식 후부터 단일처리일 전까지 40 일간 1일 4시간(22-02시) 광중단 처리하였다. ‘백마’의 발뢰소요일수는 형광등 처리에서 21.3일로 가장 길었으며, LED 590nm 처리는 15.8일로 가장 짧았다. ‘신마’는 형광등, LED 610nm와 660nm 처리에서 발뢰소요일수가 각각 18.0일, 17.8일, 17.7일로 가장 길었으며, LED 590nm 처리에서 15.1일로 가장 짧았다. ‘백마’의 개화소 요일수는 형광등처리에서 56.9일로 가장 길었고, LED 590nm 처리에서 51.6일로 가장 짧았다. ‘신마’는 형광등과 LED 660nm 처리에서 각각 56.0일, 56.7일로 가장 길었고, LED 590nm 처리에서 52.9일로 가장 짧았다. 따라서, 스탠다드 국화의 화아분화 및 개화조절에 가장 효과적인 광원 및 광질은 ‘백마’ 품종의 경우 형광등 처리가 가장 효과적이며, ‘신마’ 품종은 형광등과 LED 660nm 처리가 가장 효과적이라고 생각된다. ‘백마’ 품종 의 절화장과 절화중은 화아분화 억제효과가 가장 좋았던 형광등 처리에서 각각 92.7cm, 61.9g으로 우수하였으며, ‘신마’ 품종의 경우에도 형광등 처리에서 절화장, 절화중이 각각 114.6cm, 71.3g으로 우수하였다. 결과적으로 스탠다드 국화의 생육 및 개화에 있어서 광중단 광원 및 광질로 형광등 처리가 우수하였으며, LED 660nm 처리도 효과가 있는 것으로 생각된다.

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.

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 Literature Cited

• 권영순(국립원예특작과학원 원예작물부 화훼과, Floriculture Research Division, National Institute of Horticultural & Herbal Science, Rural Development Administration) | Young Soon Kwon
• 유봉식(국립원예특작과학원 원예작물부 화훼과, Floriculture Research Division, National Institute of Horticultural & Herbal Science, Rural Development Administration) | Bong Sik You
• 정재아(국립원예특작과학원 원예작물부 화훼과, Floriculture Research Division, National Institute of Horticultural & Herbal Science, Rural Development Administration) | Jae A Jung
• 박상근(국립원예특작과학원 원예작물부 화훼과, Floriculture Research Division, National Institute of Horticultural & Herbal Science, Rural Development Administration) | Sang Kun Park
• 신학기(국립원예특작과학원 원예작물부 화훼과, Floriculture Research Division, National Institute of Horticultural & Herbal Science, Rural Development Administration) | Hak Ki Shin
• 길미정(국립원예특작과학원 원예작물부 화훼과, Floriculture Research Division, National Institute of Horticultural & Herbal Science, Rural Development Administration) | Mi Jung Kil Corresponding author