This study was conducted to obtain basic information regarding the impact of light quality on petal coloring in roses. The five miniature varieties of rose with developing floral buds: ‘Berigamo’, ‘Elpaso Yellow’, ‘Elpaso’, ‘Meggiore’, and ‘Maasland’ were observed for three weeks, whose petals were yellowish-white, yellow, bicolor (yellow and orange), pink, and red, respectively. The light quality (LED) composition was white (control) and five monochromatic light addition groups: red (R), green (G), blue (B), far-red (FR), and ultraviolet B (UVB). The total light intensity for each treatment was 300 μmol·m-2·s-1, including 90 μmol·m-2·s-1 of monochromatic light supplement. The impact of light quality on petal coloring was variety-specific. R, FR, and UVB significantly enhance the petal coloring in the pink rose variety by 19.0%, 28.8%, and 6.4%, respectively. G and B reduced the anthocyanin contents by 17.8% and 19.0%, respectively. The total carotenoid content in the yellow bicolor variety increased markedly by 19.6% under UVB. These results helped understand the impact of the qualities of various supplemental lights on rose petal coloring.

본 연구는 광질이 장미의 꽃잎 착색에 미치는 영향에 대한 기초자료를 얻고자 수행했다. 꽃눈 분화가 시작된 미니 장미 5품종 ‘Berigamo’(yellowish white), ‘Elpaso Yellow’(yellow), ‘Elpaso’ (bicolor, yellow+orange), ‘Meggiore’(pink), ‘Maasland’(red)를 대상으로 3주간 광질처리를 실시하였다. 광질처리는 300μmol·m-2·s-1 백 색광(W) 대조구와 210μmol·m-2·s-1 백색광에 적색(R), 녹색(G), 청색(B), 원적외선(FR) 및 자외선 B(UVB)을 각 90μmol·m-2·s-1 보광하여 대조구와 동일한 PPFD로 설정하였다. 광질의 꽃잎착색 효과는 품종 특이적으로 R, FR, UVB 보광은 특히 분홍색 품종에서 각각 19.0%, 28.8%, 6.4% 착색을 증진시킨 반면, G와 B 보광은 안토시아닌 함량을 각각 17.8%, 19.0% 감소시켰 다. 황색 품종에서는 UVB보광으로 카로티노이드 함량이 19.6% 증가하였다.

서 언
재료 및 방법
    식물재료
    광질처리
    화아 발육 및 화색 특성
    통계분석
결과 및 고찰
    화아 발육 및 화색 발현
    화색소 함량
초 록
사 사

• 신영찬(서울시립대학교 환경원예학과) | Yeong Chan Shin (Department of Environmental Horticulture, University of Seoul, Seoul 02504, Korea)
• 연제연(서울시립대학교 자연과학연구소) | Je Yeon Yeon (Natural Science Research Institute, University of Seoul, Seoul 02504, Korea)
• 주승현(서울시립대학교 환경원예학과) | Seung Hyun Joo (Department of Environmental Horticulture, University of Seoul, Seoul 02504, Korea)
• 문예은(서울시립대학교 환경원예학과) | Ye Eun Moon (Department of Environmental Horticulture, University of Seoul, Seoul 02504, Korea)
• 김완순(서울시립대학교 환경원예학과, 서울시립대학교 자연과학연구소) | Wan Soon Kim (Department of Environmental Horticulture, University of Seoul, Seoul 02504, Korea, Natural Science Research Institute, University of Seoul, Seoul 02504, Korea) Corresponding author