Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Analysis of Growth and Functional substance for Cyperus rotundus and Glehnia littoralis by EC Treatment in Reclaimed Soil Conditions

간척지 토양에서 EC 처리에 따른 향부자와 갯방풍의 생육 및 기능성 물질 함량 분석

  • Jang, Ji-Hyeon (Department of Horticultural Science, Chungnam National University) ;
  • Shin, Hye-In (Department of Horticultural Science, Chungnam National University) ;
  • Park, Jong-Seok (Department of Horticultural Science, Chungnam National University)
  • Received : 2019.10.02
  • Accepted : 2019.10.14
  • Published : 2019.10.30
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Abstract

The purpose of this study was to analyze the growth and functional differences between C. rotundus and G. littoralis according to different electrical conductivity (EC) conditions in reclaimed soil conditions. C. rotundus and G. littoralis seeds were sown in a tray and managed for seedlings stage for eight weeks. They were transplanted in the pots containing reclaimed soils sampled in the Saemangum region. The plants were grown in the reclaimed land soil for 12 weeks under the control, 1, 2, 4, and $8dS{\cdot}m^{-1}$ conditions and in horticultural soils with EC $1.0dS{\cdot}m^{-1}$. Plant height, leaf length and width of C. rotundus were the highest in EC $1dS{\cdot}m^{-1}$. Leaf, flower and tuber numbers of C. rotundus were the highest in EC $2dS{\cdot}m^{-1}$ and the lowest in EC $8dS{\cdot}m^{-1}$, and SPAD was the highest in EC 2 and $4dS{\cdot}m^{-1}$ and the lowest in EC $8dS{\cdot}m^{-1}$. The fresh weights of shoot and root of C. rotundus grown under EC $2dS{\cdot}m^{-1}$ increased and then decreased as the concentration increased. When compared plant growth between reclaimed soil and horticulture soil with EC $1dS{\cdot}m^{-1}$, the fresh weights of shoot and root, SPAD, leaf number, flower number, and tuber number were higher in horticultural soils. Although G. littoralis grown under EC $8dS{\cdot}m^{-1}$ was the lowest in all growth parameters, there were no significant differences among other EC treatments. C. rotundus had the highest p-coumaric acid content in EC $1dS{\cdot}m^{-1}$. And the catechin content in shoot of G. littoralis was the highest in the control, and root of Glehnia littoralis had the highest benzoic acid contents in EC $1dS{\cdot}m^{-1}$. If the soil EC is well managed within $4.0dS{\cdot}m^{-1}$, two plants would be cultivated in reclaimed land.

본 실험의 목적은 간척지 토양에서 다른 EC처리에 따라 향부자와 갯방풍의 생장 및 기능성물질 차이를 분석하고자 수행하였다. 향부자와 갯방풍 종자를 트레이에 파종 후 8주간 온실에서 육묘하였고 새만금 지역에서 채취한 간척지 토양을 담은 포트에 이식하였다. 식물은 EC농도에 따라, 대조구, 1, 2, 4, $8dS{\cdot}m^{-1}$ 조건으로 12주간 실험을 진행했고 추가로 간척지 토양에서의 EC $1dS{\cdot}m^{-1}$과 원예용 상토를 구분하여 생육을 비교했다. 향부자의 초장, 엽장 엽폭은 EC $1dS{\cdot}m^{-1}$에서 가장 높았다. 엽수, 화방 수, 인편 수는 EC $2dS{\cdot}m^{-1}$에서 가장 크고 EC $8dS{\cdot}m^{-1}$에서 가장 적었으며, SPAD는 EC 2와 $4dS{\cdot}m^{-1}$에서 가장 높고 EC $8dS{\cdot}m^{-1}$에서 가장 낮았다. 지상부와 지하부의 생체중은 EC $2dS{\cdot}m^{-1}$까지 증가하다가 농도가 증가함에 따라 값이 감소했다. EC $1dS{\cdot}m^{-1}$ 조건에서 간척지토양과 원예용 상토에서 자란 작물의 생육을 비교했을 때 SPAD, 엽수, 화방 수, 인편 수, 지상부와 지하부의 생체중은 원예용 상토에서 더 높았다. 갯방풍은 모든 생육 조건에서 EC $8dS{\cdot}m^{-1}$가 가장 낮았으며 EC $8dS{\cdot}m^{-1}$을 제외하고 다른 처리구에서는 유의적인 차이를 확인할 수 없었다. 향부자는 EC $1dS{\cdot}m^{-1}$에서 p-coumaric acid 함량이 가장 높았고, 갯방풍의 지상부는 catechin의 함량이 대조구에서 가장 높았으며 지하부는 EC $1dS{\cdot}m^{-1}$에서 benzoic acid 함량이 가장 높았다. 간척지 토양을 EC $4dS{\cdot}m^{-1}$ 이내로 관리 할 수 있다면 향부자와 갯방풍의 재배가 가능할 수 있을 것으로 판단된다.

Keywords

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