한국습지학회지 (Journal of Wetlands Research)

  • 제20권1호
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  • Pages.27-34
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  • 2018
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  • 1229-6031(pISSN)
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  • 2384-0056(eISSN)
한국습지학회 (Korean Wetlands Society)
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토양의 수분과 유기물이 멸종위기식물 큰바늘꽃(Epilobium hirsutum L.)의 번식계절 및 생리 반응에 미치는 영향

Effect of Moisture and Nutrient of Soil on Reproductive Phenology and Physiological Response of Epilobium hirsutum L., an Endangered Plant

  • 이응필 (공주대학교 생명과학과) ;
  • 이수인 (공주대학교 생명과학과) ;
  • 한영섭 (국립생태원 생태조사연구실) ;
  • 이승연 (공주대학교 생명과학과) ;
  • 유영한 (공주대학교 생명과학과) ;
  • 조이연 (공주대학교 생물교육과)
  • Lee, EungPill (Department of Life Science, Kongju National University) ;
  • Lee, SooIn (Department of Life Science, Kongju National University) ;
  • Han, YoungSub (Division of Ecological Survey Research, National Institute of Ecology) ;
  • Lee, SeungYeon (Department of Life Science, Kongju National University) ;
  • You, YoungHan (Department of Life Science, Kongju National University) ;
  • Cho, YiYun (Department of Biology Education, Kongju National University)
  • 투고 : 2018.01.04
  • 심사 : 2018.01.17
  • 발행 : 2018.02.28
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초록

본 연구에서는 멸종위기식물인 큰바늘꽃(Epilobium hirsutum L.)의 효과적인 보전 및 복원을 위한 기초자료를 얻기 위해 토양의 수분함량과 유기물함량이 번식계절과 생리 반응에 어떠한 영향을 주는지에 대하여 알아보았다. 큰바늘꽃은 다년생식물이지만 모든 구배에서 한 해에 생식생장을 하였다. 꽃봉오리, 꽃 그리고 열매주머니는 수분구배와 영양소구배에서 각각 높은 수분 조건과 높은 유기물 조건에서 가장 이른 시기에 성숙하였다. 그리고 꽃 수와 열매주머니 수는 높은 수분 조건과 높은 유기물 조건에서 더 빨리 증가하였다. 엽록소 함량은 수분구배에서 높은 중간 수분 조건과 높은 수분 조건에서 가장 많았고, 영양소구배에서는 차이가 없었다. 최소엽록소형광 값은 수분구배와 영양소구배 모두 차이가 없었고, 최대엽록소형광 값은 높은 수분 조건과 높은 유기물 조건에서 가장 높았다. 광계 II의 광화학적 효율 값은 모든 수분구배에서 0.75로 차이가 없었고, 영양소구배에서의 경우 높은 유기물 조건에서 0.78로 가장 높았다. 큰바늘꽃은 수분이 증가할수록 엽록소 함량이 많아지고, 유기물이 증가할수록 Fv/Fm 값이 높아졌다. 이상의 연구결과는 토양의 충분한 수분과 유기물 함량은 큰바늘꽃의 번식계절을 앞당겨 주고 생식생장을 촉진한다는 것을 보여준다. 추후 멸종위기종인 큰바늘꽃의 개체군 유지와 서식지를 관리하는데 중요한 정보가 될 것으로 판단된다.

Reproductive phenology and physiological responses of Epilobium hirsutum L. to moisture content and nutrient content of soil were analysed in order to obtain basic data for effective conservation and restoration. Epilobium hirsutum L. is a perennial plant. But Epilobium hirsutum L. grew reproductively in all moisture and nutrient gradients. Flower bud, flowers and peduncle were respectively ripened in earlier under highest moisture condition and highest nutrient condition. And, number of flowers and peduncle were more quickly increased under highest moisture condition and highest nutrient condition. Chlorophyll content was high under highest moisture condition and higher middle moisture condition. However, we found no significant difference of chlorophyll content regard to nutrient gradients. There was no difference in minimum chlorophyll fluorescence among all moisture and nutrient gradients. The photochemical efficiency values of PS II were 0.75 in all moisture gradients, and it was 0.78 in highest nutrient gradient. The chlorophyll content of Epilobium hirsutum L. increased as the moisture content increased, and the Fv/Fm value increased as the organic matter increased. Our results showed that high moisture and nutrient content of soil advance their breeding season and promote reproductive growth. It might be important basic informations for the maintenance of population and the management of habitat of Epilobium hirsutum L. an endangered plant species.

키워드

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