Korean Journal of Environment and Ecology (한국환경생태학회지)

Korean Society of Environment and Ecology (한국환경생태학회)
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Growth Responses of 4 Species to NaCl Concentration in Artificial Soil

NaCl 농도별 토양 처리에 대한 4수종의 생장 반응

  • Park, Woo-Jin (Institute of Agricultural Science & Technology, Jeonbuk National University) ;
  • Seo, Byung-Soo (Dept. of Forest Resources, Jeonbuk National University) ;
  • Park, Chong-Min (Dept. of Forest Resources, Jeonbuk National University) ;
  • Choi, Chung-Ho (Gyeonggi-do Forest Environment Research Institute) ;
  • Choi, Soo-Min (Southern Forest Research Center, Korea Forest Research Institute)
  • 박우진 (전북대학교 농업과학기술연구소) ;
  • 서병수 (전북대학교 산림자원학과) ;
  • 박종민 (전북대학교 산림자원학과) ;
  • 최충호 (경기도 산림환경연구소) ;
  • 최수민 (국립산림과학원 남부산림연구소)
  • Received : 2010.09.28
  • Accepted : 2010.12.30
  • Published : 2010.12.31
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Abstract

In order to inspect growth responses of Fraxinus rhynchophylla Hance, Koelreuteria paniculata Laxmann, Quercus acutissima Carruther and Ulmus parvifolia Jacquin to NaCl treatment, NaCl solution was treated for four months with 0, 25, 50, 100 and 200 mM concentrations, then survival rate, change of relative growth rate, weight, dry weight and pigment content of leaf were investigated. According to NaCl treatment, pH and EC (electrical conductivity) of soil increased, and growth rates of four tree species fell apparently as treatment time became longer. U. parvifolia had the highest survival rate with 15% in the 200mM treatment, and the other three species withered in the treatment. Relative growth rate, weight and dry weight decreased when NaCl treatment time grew longer. The total chlorophyll declined after it rose to 60 days, and the total chlorophyll and carotenoid of the all species according to NaCl treatment did not change very much. With the result from anlayzing growth responses of four tree species to oxidative stress which occurs during NaCl treatment, U. parvifolia has the highest tolerance, followed by K. paniculata, F. rhynchophylla and Q. acutissima.

NaCl 처리에 대한 물푸레나무, 모감주나무, 상수리나무, 참느릅나무의 생장반응을 살펴보기 위하여 NaCl 용액을 0, 25, 50, 100, 200mM 농도로 4개월간 처리하고 생존율, 상대생장율 변화, 생체중 및 건물중, 잎의 색소함량을 분석하였다. NaCl 처리에 따라 토양의 pH와 EC가 증하였으며, 처리기간이 길어짐에 따라 4수종의 생장율은 뚜렷하게 감소하였다. 최종 생존율이 가장 높은 수종은 참느릅나무로서 200mM 처리구에서 15%의 생존율을 보였고, 나머지 3수종은 200mM 처리구에서 모두 고사하였다. 상대생장율, 생체중 및 건물중은 NaCl 처리기간이 길어짐에 따라 감소하였다. 총 엽록소 함량은 60일 후까지 증가하는 경향을 보이다가 감소하였으며, 모든 수종에서 NaCl 처리에 따른 총 엽록소 함량과 카로테노이드 함량의 변화는 크지 않았다. NaCl 처리 시 발생되는 산화적 스트레스에 대한 4수종의 생장반응을 종합한 결과 참느릅나무, 모감주나무, 물푸레나무, 상수리나무 순으로 내성이 큰 것으로 판단되었다.

Keywords

References

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