분화용 미니 장미 화색 발현에 미치는 광질 효과 = Effect of Light Quality on Petal Coloring in Potted Miniature Roses

국문 초록 (Abstract)

본 연구는 광질이 장미의 꽃잎 착색에 미치는 영향에 대한기초자료를 얻고자 수행했다. 꽃눈 분화가 시작된 미니 장미 5품종‘Berigamo’(yellowish white), ‘Elpaso Yellow’(yellow), ‘Elpaso’ (bicolor, yellow+orange), ‘Meggiore’(pink), ‘Maasland’(red)를대상으로 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 꽃잎 착색 효과는 품종 특이적으로 R, FR, UVB 보광은 특히 분홍색품종에서 각각 19.0%, 28.8%, 6.4% 착색을 증진시킨 반면, G와 B 보광은 안토시아닌 함량을 각각 17.8%, 19.0% 감소시켰다. 황색 품종에서는 UVB보광으로 카로티노이드 함량이 19.6% 증가하였다.

다국어 초록 (Multilingual Abstract)

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.