Journal of Korean Society of Forest Science (한국산림과학회지)

Korean Society of Forest Science (한국산림과학회)
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Growth and Physiological Characteristics of Containerized Seedlings of Sageretia thea at Different Fertilization Treatments

시비처리에 따른 상동나무 용기묘의 생장 및 생리특성

  • Eo, Hyun Ji (Forest Medicinal Resources Research Center, National Institute of Forest Science) ;
  • Son, Yong Hwan (Forest Medicinal Resources Research Center, National Institute of Forest Science) ;
  • Park, Sung Hyuk (Forest Medicinal Resources Research Center, National Institute of Forest Science) ;
  • Park, Gwang Hun (Forest Medicinal Resources Research Center, National Institute of Forest Science) ;
  • Lee, Kyeong Cheol (Department of Forestry, Korea National College of Agriculture and Fisheries) ;
  • Son, Ho Jun (Forest Medicinal Resources Research Center, National Institute of Forest Science)
  • 어현지 (국립산림과학원 산림약용자원연구소) ;
  • 손용환 (국립산림과학원 산림약용자원연구소) ;
  • 박성혁 (국립산림과학원 산림약용자원연구소) ;
  • 박광훈 (국립산림과학원 산림약용자원연구소) ;
  • 이경철 (한국농수산대학 산림학과) ;
  • 손호준 (국립산림과학원 산림약용자원연구소)
  • Received : 2021.04.05
  • Accepted : 2021.05.28
  • Published : 2021.06.30
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Abstract

This study aims to optimize the appropriate concentration of fertilizers for Sageretia thea by analyzing growth performances (height and root collar diameter) and physiological characteristics (photosynthesis, chlorophyll contents, and chlorophyll fluorescence reaction). As fertilizer concentration was increased to 1.5 g·L-1, growth increased, but it decreased at 2.0 g·L-1 treatment. Root collar diameter growth was reduced because of higher fertilizer concentrations. Photosynthesis reactions showed the highest CO2 reaction curves, maximum photosynthesis rate, and maximum carboxylation rate in the 1.5 g·L-1 fertilizer treatment. The chlorophyll fluorescence reaction and SPAD values revealed that fertilizer treatment improves photosynthesis efficiency and robustness compared with untreated control. Therefore, the appropriate fertilizer concentration for producing good seedling quality of Sageretia thea is 1.0~1.5 g·L-1.

본 연구는 다양한 효능·효과가 최근에 입증된 상동나무를 대상으로 다목적 수용성 복합비료를 농도(0.5 g·L-1, 1.0 g·L-1, 1.5 g·L-1, 2.0 g·L-1)처리에 따른 생장특성(간장, 근원경 및 H/D율)과 생리특성(광합성, 엽록소 함량 및 형광반응)을 정량화하여 적정 시비 수준을 알아보고자 실시하였다. 간장생장은 시비농도가 1.5 g·L-1까지 높아짐에 따라 생장량이 증가했으나 2.0g·L-1 시비처리에서는 낮아졌다. 근원경 생장은 시비농도가 높아짐에 따라 생장량은 유의하게 낮아졌다. 광합성 반응은 1.5 g·L-1 시비처리에서 엽육세포 내 CO2 반응곡선, 최대광합성효율, 최대 카르복실화 속도가 가장 높았다. 엽록소 형광반응과 엽록소 지수는 무처리구에 비해 시비처리구에서 유의적으로 광합성 기구의 효율을 높이고 있음을 확인하였다. 따라서 우량한 묘목품질의 상동나무를 생산하기 위한 시비 수준은 1.0~1.5 g·L-1 농도라고 판단된다.

Keywords

Acknowledgement

본 연구는 국립산림과학원 석.박사연구원 지원 사업과 일반연구과제를 통해 이루어진 것으로 이에 감사드립니다.

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