This study aims to investigate the proper mixing treatment concentration of ozone (O3) and sucrose to preserve and extend the vase life of the cut rose flowers ‘Dominica’. The vase solution was prepared using tap water, 3% sucrose, ozone 5.5 mg L-1, and 3% sucrose with ozone 5.5 mg L-1. The vase life was the highest in the tap water and ozone treatments at 16.3 and 16.1 days, respectively. The vase life of ozone with sucrose treatment was 6.9 days, which was 9.4 days lower than that of the control. Compared to a single treatment, the vase life termination symptoms for ozone with sucrose treatment decreased petal wilting and increased bent necks. Relative fresh weight and vase solution uptake increased up to 4 days after treatment and decreased from 2 days before vase life termination. The rate of change in petal color was high in L*, a*, and b* for the sucrose treatment than after harvest, and low for the ozone treatments. The maximum relative flower size increase rates after treatment were 195% in the control, 186% in the sucrose treatment, 171% in the ozone treatment, and 155% in the ozone with sucrose treatment.

We report the first observation of Fano resonance in the Y-shaped cavity (YC), demonstrate that the sensitivity of the sensor is as high as 1160 nm/RIU, much higher than that of the aforementioned sensors, and observe that the quality factor and sensitivity of Fano resonance can be adjusted by changing the geometry of the sensor or adding silver nanoparticles. Traditional sucrose detection methods either waste resources or pollute the environment. This work shows that the sensor can be used to detect the concentration of sucrose. In addition, we found that the concentration of sucrose has a linear relationship with its corresponding refractive index. The sensor we designed can easily and rapidly calculate the concentration of a sucrose solution based on the Fano resonance wavelength shift, which is an important first step towards detecting the refractive index of the solution and identify the composition.

Carnation (Dianthus caryophyllus L.) ‘Purple Beauty’ at micropropagation stage 3 was cultured under two levels each of medium sucrose concentration (0 and 30 g·L-1), photosynthetic photon flux density (50 and 200 μmol·m-2·s-1 PPFD), and CO2 concentration (350 and 1,000 μmol·mol-1), in a factorial experimental design, consisting of all eight possible treatment combinations. Shoot tip explants, obtained from in vitro-grown plantlets, were cultured on 50 mL agar-solidified Murashige and Skoog medium per container. Each culture container was sealed with a rigid lid vented by a high-efficiency particulate air filter attached to a 10 mm diameter hole made in the lid center, with an estimated number of 2.8 air exchanges per hour. All cultures were maintained for four weeks at 24°C/22°C (day/night) temperatures, 70%–80% relative humidity, and a 16 h/8 h (day/night) photoperiod was provided by white light-emitting diodes. The treatment combining high light intensity (200 μmol·m-2·s-1), high CO2 concentration (1,000 μmol·mol-1), and without supplementation of sucrose to the medium (i.e., photo-autotrophic conditions) resulted in better plantlet growth and development, with higher values being observed in terms of total fresh weight, tissue water content, leaf length, leaf width, and total chlorophyll content than in plantlets grown under the other treatments.

본 연구는 장미의 절화수명 연장과 품질을 향상시키기 위한 목적으로 삽지각도, sucrose 전처리 시간 그리고 sucrose 농도가 절화수명에 미치는 영향을 조사하기 위해서 수행하였다. Sucrose soaking 처리시 sucrose 농도는 0.5, 1 및 2% 그리고 sucrose pulsing 처리시 sucrose 농도는 0, 1, 2, 및 4%를 이용하였다. Sucrose pulsing처리는 2 hrs 및 20 hrs 전처리 한 다음 실험을 수행하였다, 시험관에 100 mL씩 각각의 보존용액을 채 운 후 삽지각도는 수평(0o), 수직(90o) 그리고 중간정도 (45o)를 유지하여 실험을 수행하였다. Sucrose soaking 처리시 sucrose 농도와 각도에 따라서 꽃잎의 개화가 영향을 받은 것으로 보아 절화수명 연장을 위해서는 sucrose 농도를 높게 하고 각도를 수직으로 유지하는 것이 좋을 것으로 사료된다. 그리고 sucrose pulsing 2hrs 및 20 hrs 전처리 후, 삽지각도 45o 처리구에서는 개화가 지연되고 색상의 유지가 양호하였으나 90o 처 리구에서는 조사 시작일 부터 개화가 빠르게 진행되고 색상도 빠르게 변색이 진행되므로 절화수명연장의 측 면에서 삽지각도 90o는 바람직하지 못한 것으로 사료 된다.

본 연구는 우리나라 무스카리 우점품종인 ‘Early Giant’ 의 대량증식 체계를 구축하기 위하여 잎 절편으로부터 소인경 형성과 비대에 미치는 MS 무기염 농도, 당 농도 및 광조건의 영향을 조사하였다. 무스카리의 잎 절편을 2주간 암 배양 후 MS 기본배지에 NAA 0.01mg·L−1, kinetin 0.2 m·L−1, 자당 30 g·L−1와 gelrite 3 g·L−1가 첨가된 배지에 16시간 일장으로 명 배양하였을 때 자구형 성 및 생육이 가장 양호하였다. 다만, 자구 비대는 MS 배지 내 60 g·L−1 당 농도에서 촉진되었다. 온실에서 순 화된 식물체는 정상적으로 개화하였으며 정식 2년차에 1.5개 내외의 자구를 가진 구를 생산할 수 있었다.