Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Influence of Light Intensity and Photoperiod on the Growth and Phenol Contents of Hydroponic Basil in Vertical Farms

수직농장에서 광도와 광주기가 수경재배 바질의 생육 및 페놀 함량에 미치는 영향

  • Sunwoo Kim (Department of Bio-AI Convergence, Chungnam National University) ;
  • Jongseok Park (Department of Horticultural Science, Chungnam National University)
  • 김선우 (충남대학교 바이오 AI 융합학과) ;
  • 박종석 (충남대학교 농업생명과학대학 원예학과)
  • Received : 2023.10.06
  • Accepted : 2023.10.19
  • Published : 2023.10.31
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Abstract

This study aimed to investigate the growth and phenol content changes of basil (Ocimum basilicum L.) under five different light intensities and photoperiods, maintaining the same Daily Light Integral (DLI) conditions in a plant factory. Basil seeds were sown on a rockwool medium for four weeks and then transplanted. To maintain a DLI 17mol·m-2·d-1, light intensity and photoperiod were set at 16h-295, 18h-260, 20h-235, 22h-215, and 24h-200μmol·m-2·s-1 and cultivated for four weeks. The harvested results showed that basil plant height, number of lateral branches, and leaf number tended to decrease from the 16h-295 treatment to the 24h-200 treatment. Shoot fresh weight, dry weight, leaf area, leaf width, and leaf length were significantly higher in the 18 h-260 treatment. The total phenolic contents in the 18h-260 treatment was significantly higher by 51.3%, 172.7%, 111%, and 119.7% compared to the 16h-295, 20h-235, 22h-215, and 24h-200 treatments, respectively. Therefore, it is anticipated that cultivating basil under the condition of 18h-260 treatment could yield enhanced growth quality and an increase in total phenolic contents.

본 연구는 식물 공장에서 바질(Ocimum basilicum L.)을 동일한 일적산광량(DLI) 조건에서 5개의 광도와 광주기의 처리구를 설정하여 생육과 페놀 함량의 변화를 살펴보고자 수행되었다. 바질 종자를 4주간 암면 배지에 파종한 후 육묘하였다. 육묘 후 DLI 17mol·m-2·d-1로 유지하기 위해 광주기와 광도를 16h-295, 18h-260, 20h-235, 22h-215, 24h-200μmol·m-2·s-1 처리로 설정한 후 4주간 재배하였다. 수확 후 결과 바질의 초장, 측지 개수, 엽수는 16h-295 처리에서 24h-200 처리로 갈수록 낮아지는 경향을 보였다. 지상부 생체중과 건물중, 엽면적, 엽폭, 엽장은 18h-260 처리가 유의적으로 높았으며, 총 페놀 함량은 18h-260 처리가 16h-295, 20h-235, 22h-215, 24h-200 처리에 비해 각각 51.32, 172.71, 110.95, 119.71%로 유의하게 높았다. 따라서 인공광을 광주기가 짧고 높은 광도 조건인 18h-260 처리에서 바질을 재배하면 생육 품질과 총 페놀 함량 증대 효과를 기대할 수 있을 것이라고 사료된다.

Keywords

Acknowledgement

본 결과물은 농림축산식품부 및 과학기술정보통신부, 농촌진흥청의 재원으로 농림식품기술기획평가원과 재단법인 스마트팜연구개발사업단의 스마트팜다부처패키지혁신기술개발사업의 지원을 받아 연구되었음(421034-04).

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