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2020 Vol.53, Issue 2 Preview Page

Original research article

Effect of Shading on Growth and Functional Ingredient Contents of Gynura procumbens Cultivated in Hydroponics System
Kyu-Hoi Lee12
,
Sung-Hee Lee2
,
Eun-Sol Yeon2
,
Who-Bong Chang2
,
Ju-Hyoung Kim2
,
Jae-Ho Park3
,
Gwang-Hyun Han1
,
Jin Hee Park1
,
Sook-Jin Kim4
,
Tong-Min Sa1*
1Professor, Department of Agricultural Chemistry, Chungbuk National University, Cheongju 28644, Korea
2Local Agriculture Researcher, Bureau of Research & Development, Chungcheongbuk-do Agricultural Research and Extension Services, Cheongju 28130, Korea
3Professor, Department of Pharmaceutical Science, Jungwon University, Goesan 28024, Korea
4Agriculture Researcher, Planning & Coordination Division, National Institute of Crop Science, Wanju 55365, Korea
* Corresponding Author
31 May 2020. pp. 150-161
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Abstract

Gynura procumbens (Family Asteraceae) is a medicinal plant commonly found in tropical Asian countries such as China, Thailand, Indonesia, Malaysia, and Vietnam. It is widely used as a traditional medicine in many different countries for the treatment of a variety of health ailments such as kidney discomfort, rheumatism, diabetes mellitus, constipation, and hypertension. The objective of this study was to investigate the effect of shading on growth and functional ingredients of Gynura procumbens. Gynura procumbens was planted in a greenhouse on April 24 (2019), and shading treatments were carried out throughout the entire growth period at 0%, 35%, 55%, and 75% using a black net. The total plant height of Gynura procumbens was highest for the 75% shading treated ones. Additionally, the stem diameter and yield was higher for all the shading treated plants compared to the non-shaded control plants. The DPPH radical scavenging activity of the 0% and 35% shading treated plants were significantly higher than the plants exposed to 55% and 75% shading treatment at 0.5% and 2.5% sample concentrations. The total flavonoids and vitamin C concentrations had also shown the same trend, whereas rutin content was highest for 0% shading treatment and the lowest was for 55% and 75% shading treatments. Hence, this study suggests that 35% shading treatment on Gynura procumbens can be considered as an advantageous condition for their growth and functional ingredients.

Rutin contents of Gynura procumbens under different shading levels. Numbers with the same letter within a column are not significantly differed (Duncan’s test, p < 0.05).

Keywords
Gynura procumbens
Shading
Functional ingredient contents
Hydroponics

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Information
  • Publisher :Korean Society of Soil Science and Fertilizer
  • Publisher(Ko) :한국토양비료학회
  • Journal Title :Korean Journal of Soil Science and Fertilizer
  • Journal Title(Ko) :한국토양비료학회 학회지
  • Volume : 53
  • No :2
  • Pages :150-161
  • Received Date : 2020-04-17
  • Revised Date : 2020-05-28
  • Accepted Date : 2020-05-28
  • DOI :https://doi.org/10.7745/KJSSF.2020.53.2.150
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