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2022 Vol.34, Issue 3 Preview Page

Research Article

Effects of Shading Treatment on the Growth and Leaf Color Quality of Potted Phedimus takesimensis cv. Atlantis

차광처리가 분화재배 섬기린초 ‘아틀란티스’의 생장과 엽색 품질에 미치는 영향

Jae-Hwan Lee12
,
Sang-Yong Nam34*
이 재환12
,
남 상용34*
1Integrated Ph.D. Student, Department of Environmental Horticulture, Sahmyook University, Seoul 01795, Korea
2Researcher, Natural Science Research Institute, Sahmyook University, Seoul 01795, Korea
3Professor, Department of Environmental Horticulture, Sahmyook University, Seoul 01795, Korea
4Director, Natural Science Research Institute, Sahmyook University, Seoul 01795, Korea
1삼육대학교 환경원예학과 석･박사통합과정
2삼육대학교 자연과학연구소 연구원
3삼육대학교 환경원예학과 교수
4삼육대학교 자연과학연구소 연구소장
*Corresponding Author
31 December 2022. pp. 413-424
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Abstract

Phedimus takesimensis is a succulent species indigenous to the Korean Peninsula and is found in Ulleungdo and Dokdo islands. It has potential medicinal properties; thus, it should be protected in South Korea. However, the optimal shading level for mass cultivation of P. takesimensis is unknown. In this study, we subjected P. takesimensis cv. Atlantis, a variegated leaf cultivar, to different shading levels (0, 35, 45, 60, 75, and 99%) and investigated its effect on the growth and leaf color of the plants. The results revealed that the potted plants grown under 45% shading exhibited the highest shoot length, width, and shoot fresh and dry weights. Moreover, the plants grown under 0－45% shading exhibited the highest root length and root fresh and dry weights. However, leaf length and width were higher in the plants grown under 35－60% shading, and the moisture content of the shoot and root was the highest in the plants grown under 60% and 75% shading, respectively. Chlorophyll content analysis revealed a subsequent increase as the shading level decreased; the L* and b* CIELAB values were higher as the shading levels increased. The CIE76 color difference (ΔE*ab) was the highest at 75% shading (ΔE*ab = 7.08) compared to that at 0% shading level. The plants that were grown under 0－45%, 60%, and 75% shading had the following RHS values: 147B and 148A; 147B and 148B; and 147C and 148B, respectively. This suggests that the leaves of the plants were relatively yellow at 60－75% shading. Thus, potted plants of P. takesimensis cv. Atlantis should be grown under 45% shading to attain a significant increase in plant size and improve leaf color.

Keywords
CIELAB
Growth evaluation
Phenotypic plasticity
Shade avoidance response
Succulent
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Information
  • Publisher :Agriculture and Life Sciences Research Institute, Kangwon National University
  • Publisher(Ko) :None
  • Journal Title :Journal of Agricultural, Life and Environmental Sciences
  • Journal Title(Ko) :농업생명환경연구
  • Volume : 34
  • No :3
  • Pages :413-424
  • Received Date : 2022-11-23
  • Revised Date : 2022-12-09
  • Accepted Date : 2022-12-09
  • DOI :https://doi.org/10.22698/jales.20220040
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