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밀폐형 식물생산시스템에서 백색 LED를 이용한 광도와 광주기에 따른 상추의 생장 KCI 등재

Growth of Lettuce in Closed-Type Plant Production System as Affected by Light Intensity and Photoperiod under Influence of White LED Light

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생물환경조절학회지 (Journal of Bio-Environment Control)
한국생물환경조절학회 (The Korean Society For Bio-Environment Control)
초록

본 실험은 식물공장시스템에서 인공광원인 백색 LED의 광도와 광주기에 따른 ‘선홍적축면’의 생육조건을 구명하고자 수행하였다. 그리고 각각의 챔버에 백색 LED 를 설치 후 완전임의배치법으로 20cm × 20cm 간격으로 재식하였다. 광도는 100, 200, 300μmol · m−2 · s−1로 처리 하였고, 광주기는 12/12, 18/6, 24/0(명기/암기)으로 처리하였다. 온도는 21 ± 2oC, 상대습도는 60 ± 10%로 조절 하여 22일간 재배하였다. 엽폭과 엽장, 생체중과 건물중, 총 안토시아닌 함량은 24/0(명기/암기) 처리에서 좋았다. 최대근장, 생체중과 건물중, 엽수는 100, 300μmol · m−2 · s−1보다 200μmol · m−2 · s−1 처리에서 좋았다. 엽록소는 광주기 18/6과 24/0 처리 보다 12/12(명기/암기) 처리에서 높았다. 본 실험의 결과로 광도는 200, 300μmol · m−2 · s−1, 광주기는 12/12 또는 18/6(명기/암기) 처리를 하는 것이 좋을 것으로 판단된다.

This study was conducted to examine the effect of light intensity and photoperiod of white LEDs as the artificial light source on the growth of leaf lettuce (Lactuca sativa L.) ‘Seonhong Jeokchukmyeon’ in a closed-type plant production system. Seedlings, transplanted at a density of 20 cm × 20 cm in a completely randomized design, were grown under white LEDs (FC Poibe Co. Ltd., Korea), at one of the 3 light intensities (100, 200, or 300 μmol · m−2 · s−1), and each with one of 3 photoperiods [12/12, 18/6, or 24/0 (Light/Dark)]. Plants were cultured for 22 days under the condition of 21 ± 2oC, 60 ± 10% RH, and 400 ± 50 μmol · mol−1 CO2. The greatest leaf length and width, fresh and dry weights, and total anthocyanin content were obtained in the 24/0 photoperiod, regardless of the light intensity. Length of the longest root, fresh and dry weights, and number of leaves were greater in light intensity of 200 μmol · m−2 · s−1 than 100 or 300 μmol · m−2 · s−1. Chlorophyll value was the greatest in the photoperiod 12/12 than 18/6 or 24/0. The results obtained suggest that plant grew the best kept by light intensity at 200 or 300 μmol · m−2 · s−1, and photoperiod of 12/12 or 18/6.

목차
Abstract.
 서 론
 재료 및 방법
  1. 실험재료
  2. 인공광원과 광도와 광주기 처리
  3. 재배환경
  4. 생육조사
  5. 통계분석
 결과 및 고찰
 적 요
 사 사
 Literature Cited
저자
  • 박지은(경상대학교 대학원 응용생명과학부(BK21 Program), Department of Horticulture, Division of Applied Life Science (BK21 Program), Graduate School of Gyeongsang National University) | Ji Eun Park
  • 박유경(경상대학교 대학원 응용생명과학부(BK21 Program), Department of Horticulture, Division of Applied Life Science (BK21 Program), Graduate School of Gyeongsang National University) | Yoo Gyeong Park
  • 정병룡(경상대학교 대학원 응용생명과학부(BK21 Program), 경상대학교 농업생명과학연구원, 경상대학교 생명과학연구원, Department of Horticulture, Division of Applied Life Science (BK21 Program), Graduate School of Gyeongsang National University, Institute of Agriculture & Life Sciences, Gyeongsang National University, Research Institute of Life Sciences, Gyeongsang National University) | Byoung Ryong Jeong
  • 황승재(경상대학교 대학원 응용생명과학부(BK21 Program), 경상대학교 농업생명과학연구원, 경상대학교 생명과학연구원, Department of Horticulture, Division of Applied Life Science (BK21 Program), Graduate School of Gyeongsang National University, Institute of Agriculture & Life Sciences, Gyeongsang National University, Research Institute of Life Sciences, Gyeongsang National University) | Seung Jae Hwang Corresponding author