Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Effect of Supplementary or Heating Lamps on the Yield, Vase Life, and Leaf Color of Cut Rose

보광등과 난방등이 절화장미 수확량, 절화수명, 엽색에 미치는 영향

  • Jeong, Kyeong Jin (Department of Horticulture Science, Gyeongnam National University of Science and Technology) ;
  • Yun, Jae Gill (Department of Horticulture Science, Gyeongnam National University of Science and Technology) ;
  • Chon, Young Shin (Department of Horticulture Science, Gyeongnam National University of Science and Technology) ;
  • Shin, Hyun Suk (Department of Horticulture Science, Gyeongnam National University of Science and Technology) ;
  • Lee, Sang Woo (Department of Horticulture Science, Gyeongnam National University of Science and Technology)
  • 정경진 (경남과학기술대학교 원예과학과) ;
  • 윤재길 (경남과학기술대학교 원예과학과) ;
  • 천영신 (경남과학기술대학교 원예과학과) ;
  • 신현석 (경남과학기술대학교 원예과학과) ;
  • 이상우 (경남과학기술대학교 원예과학과)
  • Received : 2018.02.12
  • Accepted : 2018.04.26
  • Published : 2018.04.30
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Abstract

The effects of different kinds of supplementary lighting or heating lamps on the yield, cut flower life, and leaf color of cut rose were compared and analyzed. For this purpose, light emitting diode lamp (LED), metal halide lamps (MH), and high-pressure sodium lamps (HPS) as the supplementary lamps, and carbon fiber infrared lamp (NCFI) were installed on hydroponic cultivation bed in a cut rose farm. The yield of cut flower rose and the number of marketable flowers were greatly increased in spring and autumn by HPS treatment, but not in winter. The length of flower stalk was longer than that of control in the spring but decreased in winter. It seemed likely that the shorter flower stalk in winter was due to the shortened period of vegetative growth compared to the control because flowering was promoted by supplementary lighting. Vase life was not different among treatments in the autumn when the lighting time was short, but in winter, it was prolonged to 3 more days by only HPS, compared with the control. Leaf color was significantly affected by light treatment in winter rather than autumn. Leaf color was darkened in all supplementary lamps (LED, MH, HPS) treatment, whereas NCFI was similar to the control in leaf color. In conclusion, HPS is considered to be a very good supplementary lamp because it increases the length of flower stalk and the yield and prolongs vase life in cut roses. Even though NCFI could function as a heating lamp radiating a lot of heat, it was considered that the role as a supplementary light is unsatisfactory because the number of marketable flowers decreases and the quality index of cut rose deteriorates by NCFI.

종류가 다른 보광등과 난방등으로 보광을 해 주었을 때, 절화 장미의 수확량, 절화수명, 엽색에 미치는 영향을 비교 분석하였다. 이를 위하여 보광등으로 LED등(Light emitting diode lamp, LED), 메탈할라이드등(Metal halide lamp, MH), 고압나트륨등 (High-pressure sodium lamp, HPS)과 난방등으로 나노탄소섬유 적외선등 (Nano-carbon fiber infrared lamp, NCFI)을 절화장미를 재배하고 있는 농가의 수경재배 베드 위에 설치하였다. 절화 장미 수확량과 판매 가능한 절화수는 HPS 처리에 의해 봄과 가을에 크게 증가하였다. 품질의 주요기준이 되는 절화장은 봄철에는 전등처리에 의해 대조구보다 길어졌으나, 겨울에는 오히려 감소하였다. 겨울에는 전등처리로 인해 개화가 촉진되어 영양생장기간이 상대적으로 짧아졌기 때문으로 생각된다. 절화수명은 전등 처리시간이 짧은 가을에는 처리간 차이가 보이지 않았으나, 겨울에는 HPS에서만 대조구에 비해 3일 정도 길어졌다. 엽색은 가을철 보다는 겨울철에 전등처리의 영향을 크게 받았으며, 모든 보광등(LED, MH, HPS)처리에서 엽색이 짙어진 반면, 난방등으로 이용되고 있는 NCFI에서는 대조구와 비슷한 밝기였다. 결론적으로, HPS는 절화장과 절화수명을 길게하며, 수확량도 증가시키므로 매우 좋은 보광등이라고 판단되었다. NCFI는 발열양이 많기 때문에 난방등으로의 기능은 충분할지라도 판매 가능한 절화수가 감소하고 품질지수가 저하되기 때문에 보광등으로서의 역할은 미약할 것으로 판단되었다.

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