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.

This study investigated the dependence of the various sputtering conditions (Ar pressure: 2~10 mTorr, Power: 50~150 W) and thickness (50~1200 nm) of Si thin film on the electrochemical properties, microstructural properties and the capacity fading of a Si thin film anode. A Si layer and a Ti buffer layer were deposited on Copper foil by RF-magnetron sputtering. At 10 mTorr, the 50 W sample showed the best capacity of 3323 mAh/g, while the 100 W sample showed the best capacity retention of 91.7%, also at 10 mTorr. The initial capacities and capacity retention in the samples apart from the 50W sample at 10 mTorr were enhanced as the Ar pressure and power increased. This was considered to be related to the change of the microstructure and the surface morphology by various sputtering conditions. In addition, thinner Si film anodes showed better cycling performance. This phenomenon is caused by the structural stress and peeling off of the Si layer by the high volume change of Si during the charge/discharge process.