Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Effect of Surfactant Addition on Se Absorption and Growth of Pak-choi and Leaf Lettuce in Hydroponics

수경 재배 시 계면 활성제 첨가가 상추와 청경채의 생육과 Se 흡수에 미치는 영향

  • Yuna, Hyung-Kwon (Vegetable Research Division, NIHHS, RDA) ;
  • Seo, Tae-Cheol (Protected Horticulture Research Station, NIHHS, RDA) ;
  • Zhang, Cheong-Hao (Vegetable Rsearch Institute, Jhejiang Academy of Agriculture Sciences) ;
  • Chun, Chang-Hoo (Department of Plant Science and Researh Institute for Agricultural Life Sciences, Seoul National University)
  • 윤형권 (국립원예특작과학원 채소과) ;
  • 서태철 (국립원예특작과학원 시설원예시험장) ;
  • 장성호 (절강성농업과학원) ;
  • 전창후 (서울대학교 식물생산과학부)
  • Published : 2009.06.30
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Abstract

Surfactant polyvinyl alcohol (PVA-95) 1, 2, 4mg. $L^{-1}$ and calcium lignosulfonate (CLS) 5, 25, 50, 100mg. $L^{-1}$ were treated to the nutrient solution containing 1.0mg. $L^{-1}$ selenium (Se) to evaluate Se absorption effect using small DFT apparatus. The growth of leaf lettuce and pak-choi did not show unique significance by surfactant kinds and concentration in the tested range and physiological disorder. Vitamin C in leaves of two leafy vegetables was not significantly affected by surfactants also. Among major cations K content in pak-choi was highest in Se I+PVA-95 4mg. $L^{-1}$ treatment, and high in Se I+CLS 5 mg. $L^{-1}$ treatment. Ca content in two leafy vegetables showed increasing pattern by the two kinds of surfactants. Mg content was high in Se I+CLS 25mg. $L^{-1}$ treatment compared to control. Pak-choi absorbed Se about 10 times higher than leafy lettuce. Se content in leaves of two leafy vegetables increased by the treatment of two kinds of surfactants with the exception of CLS 100mg. $L^{-1}$ treatment.

소형의 담액 수경재배기를 이용하여 기본 배양액에 셀레늄(Se) 1mg $L^{-1}$과 계면활성제 PVA-95(polyvinyl alcohol-95) 1, 2, 4mg $L^{-1}$과 CLS(calcium lignosulfonate) 5, 25, 50, 100mg $L^{-1}$을 처리하여 청경채와 상추 식물체의 Se과 양이온 함량, 생육, 그리고 비타민 C 함량을 조사하였다. 생육은 처리간에 차이는 있지만 종류와 농도 별로 일정한 경향을 보이지 않았다. 총 비타민 C 함량은 두 작물 모두 모든 처리구에서 대조구에 비해 약간 증가하는 경향을 보였으나 유의성은 없었다. K 함량은 싱추의 경우는 일정한 경향이 없었지만, 청경채의 경우 Se 1+PVA-95 4mg $L^{-1}$ 처리구가 가장 높았고, Se 1+CLS 처리에서는 대조구에 비해 5mg $L^{-1}$ 농도에서는 증가하였지만 처리 농도가 증가할수록 감소하였다. Ca 함량은 두 작물 모두 Se 1+PVA-95와 CLS 처리에서 대조구에 비해 증가하였다. Mg 함량은 상추에서는 계면 활성제 처리에 의한 Mg 함량의 변화가 없었으며, 청경채에는 Se 1+CLS 25mg $L^{-1}$ 처리구가 대조구에 비해 증가하였고 기타 처리는 차이가 없었다. 식물체내 Se 함량은 상추에서는 계면 활성제 PVA-95 처리와 CLS 처리가 대조구에 비해 Se 함량이 모두 높았고, PVA-95 처리에서는 농도의 증가에 따라 Se 함량이 낮아졌으며, CLS 처리에서는 50mg $L^{-1}$ 까지는 높아졌지만 100mg $L^{-1}$에서는 낮아졌다. 청경채의 엽내 Se 함량은 계면활성제 PVA-95 처리가 큰 효과가 없었으나 CLS 25mg $L^{-1}$ 처리에서 현저히 증가되었다.

Keywords

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