Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Growth and Seedling Quality of Grafted Cucumber Seedlings by Different Cultivars and Supplemental Light Sources of Low Radiation Period and Early Yield of Cucumber after Transplanting

보광 광원 종류에 따른 약광기 품종별 오이 접목묘의 생육과 묘소질 및 정식 후 초기 과실 수량

  • Hyeong Eun Choi (Division of Applied Life Science, Graduate School of Gyeongsang National University) ;
  • So Yeong Hwang (Division of Applied Life Science, Graduate School of Gyeongsang National University) ;
  • Ji Hye Yun (Division of Applied Life Science, Graduate School of Gyeongsang National University) ;
  • Jin Yu (Division of Applied Life Science, Graduate School of Gyeongsang National University) ;
  • Jeong Hun Hwang (Division of Applied Life Science, Graduate School of Gyeongsang National University) ;
  • Eun Won Park (Division of Applied Life Science, Graduate School of Gyeongsang National University) ;
  • Jeong Kil Koo (Division of Applied Life Science, Graduate School of Gyeongsang National University) ;
  • Hee Sung Hwang (Division of Crop Science, Graduate School of Gyeongsang National University) ;
  • Seung Jae Hwang (Division of Horticultural Science, College of Agriculture & Life Sciences, Gyeongsang National University)
  • 최형은 (경상국립대학교 응용생명과학부) ;
  • 황소영 (경상국립대학교 응용생명과학부) ;
  • 윤지혜 (경상국립대학교 응용생명과학부) ;
  • 유진 (경상국립대학교 응용생명과학부) ;
  • 황정훈 (경상국립대학교 응용생명과학부) ;
  • 박은원 (경상국립대학교 응용생명과학부) ;
  • 구정길 (경상국립대학교 응용생명과학부) ;
  • 황희성 (경상국립대학교 작물생산과학부) ;
  • 황승재 (경상국립대학교 농업생명과학대학 원예과학부)
  • Received : 2023.09.27
  • Accepted : 2023.10.14
  • Published : 2023.10.31
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Abstract

To harvest marketable cucumbers, high quality seedlings must be used. Producing seedlings in the greenhouse during the low radiation period decreases marketability due to insufficient light for growth. Supplemental lighting with artificial light of different quality can be used to improve low light conditions and produce high quality seedlings. Therefore, this study was conducted to select the appropriate supplemental light sources on the growth and seedling quality of grafted cucumber seedlings during the low radiation period. Three cultivars of cucumber were used as scions for grafting; 'NakWonSeongcheongjang', 'Sinsedae', and 'Goodmorning baekdadagi'. Figleaf gourd (Cucurbita ficifolia) 'Heukjong' was used as the rootstock. The seeds were sown on January 26, 2023, and grafted on February 9, 2023. After graft-taking, cucumbers in plug trays were treated with RB light-emitting diodes (LED, red and blue LED, red:blue = 8:2), W LED (white LED, R:G:B = 5:3:2), and HPS (high-pressure sodium lamp), respectively. Non-treatment was used as the control. Supplemental lighting was applied 2 hours before sunrise and 2 hours after sunset for 19 days. The stem diameter and fresh and dry weights of roots did not differ significantly by supplemental light sources. The plant height and hypocotyl length were decreased in W LED. However, the leaf length, leaf width, leaf area, and fresh and dry weights of shoots were the highest in the RB LED. Seedling qualities such as crop growth rate, net assimilation rate, and compactness were also increased in RB LED and W LED. After transplanting, most of the growth was not significant, but early yield of cucumber was higher in LED than non-treatment. In conclusion, using RB LED, W LED for supplemental light source during low radiation period in grafted cucumber seedlings improved growth, seedling quality, and early yield of cucumber.

상품성 있는 오이를 수확하기 위해서는 고품질의 묘를 사용해야 한다. 약광기 온실에서 묘를 생산하는 것은 묘의 생육에 필요한 광이 불충분하여 상품성이 저하될 수 있다. 이는 광질이 다른 인공광을 사용한 보광을 통해 약광 조건을 해결하여 고품질의 묘를 생산할 수 있다. 본 연구는 약광기에 오이 접목묘의 생육과 묘소질에 적절한 보광 광원을 구명하고자 진행되었다. 오이는 '낙원성청장', '신세대', '굿모닝백다다기' 3가지 품종을 접수로 사용하였다. '흑종' 호박을 대목으로 사용하였다. 종자는 2023년 1월 26일 파종하였고, 2023년 2월 9일에 접목하였다. 접목 활착 후 오이묘를 RB LED(red and blue LED, red:blue = 8:2), W LED(white LED, R:G:B = 5:3:2), 그리고 HPS를 광원으로 이용하여 처리하였다. 무처리구를 대조구로 사용하였다. 보광은 일출 전 2시간, 일몰 후 2시간 동안 19일간 처리하였다. 경경과 지하부의 생체중과 지하부는 보광 광원 처리별 유의적인 차이가 없었다. W LED에서 초장과 하배축장이 짧아졌다. 하지만, 엽장, 엽폭, 엽면적 그리고 지상부의 생체중과 건물중은 RB LED에서 가장 높은 값을 나타냈다. 충실도, 순동화율, 그리고 작물생장률과같은 묘소질은 RB LED와 W LED에서 증가하는 경향을 보였다. 정식 후, 대부분의 생장은 유의적인 차이가 없었지만, 초기 과실 수량은 전체적으로 대조구보다 실험구에서 많았고, RB LED와 W LED에서 과실 수량이 가장 많았다. 결론적으로 약광기 오이 접목묘에 RB LED와 W LED를 보광 광원으로 사용하는 것은 묘의 생육, 묘소질, 그리고 초기 과실 수량을 증가시킬 수 있다.

Keywords

Acknowledgement

본 논문은 농촌진흥청 공동연구사업(과제번호: RS-2022-RD010412)의 지원에 의해 이루어진 것임.

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