Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Photosynthetic Response of Foliage Plants Related to Light Intensity, $CO_2$ Concentration, and Growing Medium for the Improvement of Indoor Environment

실내 환경 개선을 위한 광도, 이산화탄소 농도 및 배지 종류에 따른 실내 관엽식물들의 광합성 반응

  • Park, Sin-Ae (Department of Environmental Science, Kon-Kuk University) ;
  • Kim, Min-Gi (Department of Environmental Science, Kon-Kuk University) ;
  • Yoo, Mung-Hwa (Department of Environmental Science, Kon-Kuk University) ;
  • Oh, Myung-Min (Department of Horticultural Science, Chung-Buk National University) ;
  • Son, Ki-Cheol (Department of Environmental Science, Kon-Kuk University)
  • Received : 2010.07.07
  • Accepted : 2010.09.08
  • Published : 2010.12.31
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Abstract

This study was performed to investigate photosynthetic responses of 4 foliage plants in relation to light intensity, carbon dioxide concentration, and media, and to select efficient plants for the indoor environment control based on the results. Four foliage plants used in this study included Syngonium podophyllum, Schefflera arboricola cv. Hong Kong, Dieffenbachia amoena, and Dracaena deremensis cv. Warneckii Compacta. The plants cultivated in two different growth media, peatmoss and hydroball, and subjected to various light intensities (0, 30, 50, 80, 100, 200, 400, and $600\;{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ PPFD) and $CO_2$ levels (0, 50, 100, 200, 400, 700, 1000, and $1500\;{\mu}mol{CO_2}{\cdot}mol^{-1}$). As a result of the photosynthetic rate of foliage plants according to change of light intensity and $CO_2$ levels, Schefflera arboricola and Dieffenbachia amoena showed high apparent quantum yield, which stands for the photosynthetic rate under low light intensity, and both plants also recorded higher photosynthetic rate under high $CO_2$ concentration compared to the other two indoor plants. Dracaena deremensis showed the lowest photosynthetic rate under the low light intensity or high $CO_2$ concentration. There were inconsistent results in photosynthetic rate of foliage plants grown in peatmoss or hydroball. Higher photosynthetic rate was observed in Schefflera arboricola with peatmoss rather than hydroball as light and $CO_2$ concentration increased. However, hydroball had a positive effect on Dieffenbachia amoena in terms of photosynthetic rate. In case of Syngonium podophyllum, peatmoss induced higher photosynthetic rate according to increased light intensity, but there was no effect of media on the rate under various $CO_2$ treatements. In contrast, media did not affect to photosynthetic efficiency of Dracaena deremensis subjected to various light intensities and the rate of Dracaena deremensis with peatmoss was a little high when $CO_2$ concentration increased. In conclusion, potential plants for the indoor air pulification and environmental control were Schefflera arboricola and Dieffenbachia amoena because they showed high photosynthetic rate under typical indoor conditions, low light intensity and high $CO_2$ concentration.

연구는 관엽식물 4종을 배지종류, 광도 및 이산화탄소 농도를 달리하여 식물의 광합성 반응을 조사하고, 그 결과에 기초하여 실내환경 조절에 효율적인 식물을 선정하고자 실시하였다. 식물재료로는 싱고니움, 디펜바키아, 쉐프렐라 홍콩, 드라세나를 사용하였으며, 성분과 성질이 다른 두 배지(peatmoss, hydroball)에 각각 재배하였다. 광도는 PPFD 0, 30, 50, 80, 100, 200, 400, $600{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$의 수준으로 조절하고, 이산화탄소 농도는 0, 50, 100, 200, 400, 700, 1000, $1500{\mu}mol{CO_2}{\cdot}mol^{-1}$의 수준으로 처리하였다. 광도 및 엽육내 $CO_2$ 농도변화에 따른 관엽식물의 광합성 반응을 조사한 결과, 약광에서의 광합성 능력을 나타내는 순양자수율은 쉐프렐라 홍콩과 디펜바키아에서 높게 나타났으며, 두 실내식물은 고농도의 이산화탄소 환경에서도 다른 두 식물에 비해 높은 광합성율을 기록했다. 드라세나 와네키는 두 조건 모두에서 가장 낮은 광합성 효율을 보였다. 두 배지 처리에 따라서는 각각의 관엽식물에서 엇갈린 광합성 반응이 관찰되었다. 쉐프렐라 홍콩은 피트모스 배지에서 광과 이산화탄소 증가에 따라 하이드로볼 배지에 비해 높은 광합성 속도를 보였지만, 디펜바키아는 그와는 정반대로 하이드로볼 배지에서 더욱 높은 광합성율을 기록했다. 싱고니움의 경우는 광처리에 의해서는 피트모스 배지에서 높은 광합성율을 보였지만 이산화탄소 처리에서는 배지간 차이가 없었다. 가장 낮은 광합성 효율을 보인 드라세나 와네키는 광에 의한 배지간 차이가 없었으며, 이산화탄소 증가시에는 피트모스에서 다소 높은 광합성율을 보였다. 따라서 실험한 4가지 관엽식물 중 광합성 효율이 가장 높았던 쉐프렐라 홍콩이나 하이드로볼 배지에서 높은 효율을 보인 디펜바키아가 실내 공기정화 및 실내 환경조절에 적합할 것으로 판단된다.

Keywords

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