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Physiological Characteristics of Poplar Clones in the Saemanguem Reclaimed Land

새만금간척지에 식재한 포플러 클론의 생리적 특성

  • Lee, Jong Kyu (Department of Environmental Horticulture, University of Seoul) ;
  • Jang, Ji Hwi (Department of Environmental Horticulture, University of Seoul) ;
  • Li, Yang (Department of Environmental Horticulture, University of Seoul) ;
  • Kim, Hae Naem (Department of Environmental Horticulture, University of Seoul) ;
  • Kwak, Myeong Ja (Department of Environmental Horticulture, University of Seoul) ;
  • Khaine, Inkyin (Department of Environmental Horticulture, University of Seoul) ;
  • Lee, Tae Yoon (Department of Environmental Horticulture, University of Seoul) ;
  • Lee, Hyun Kyung (Department of Environmental Horticulture, University of Seoul) ;
  • Kim, Ie Rae (Department of Environmental Horticulture, University of Seoul) ;
  • Jang, Gyeong Hwan (Forest Tree Improvement Division, National Institute of Forest Science) ;
  • Lee, Wi Young (Forest Tree Improvement Division, National Institute of Forest Science) ;
  • Kang, Ho Duck (Department of Biological and Environmental Science, Dongguk University) ;
  • Woo, Su Young (Department of Environmental Horticulture, University of Seoul)
  • 이종규 (서울시립대학교 환경원예학과) ;
  • 장지휘 (서울시립대학교 환경원예학과) ;
  • 이양 (서울시립대학교 환경원예학과) ;
  • 김해냄 (서울시립대학교 환경원예학과) ;
  • 곽명자 (서울시립대학교 환경원예학과) ;
  • ;
  • 이태윤 (서울시립대학교 환경원예학과) ;
  • 이현경 (서울시립대학교 환경원예학과) ;
  • 김이레 (서울시립대학교 환경원예학과) ;
  • 장경환 (국립산림과학원 임목육종과) ;
  • 이위영 (국립산림과학원 임목육종과) ;
  • 강호덕 (동국대학교 바이오환경과학과) ;
  • 우수영 (서울시립대학교 환경원예학과)
  • Received : 2017.01.04
  • Accepted : 2017.05.11
  • Published : 2017.06.30

Abstract

This research aims to study the physiological characteristics of poplar clones in Saemanguem reclaimed land where has lower minerals and bad drainage than those in paddy field. In July and August, different poplar clones including Populus euramericana clone (Venziano and L.Avanzo) and deltoides hybrid clone (97-18 and 97-19) showed different physiological characteristics. Physiological characteristics of P. euramericana clones were better than those of P. deltoides hybrid clones. Especially, the average net photosynthetic rate ($A_{net}$) of clone Venziano were $18.62{\mu}mol\;CO_2\;m^{-2}{\cdot}s^{-1}$ and $17.11{\mu}mol\;CO_2\;m^{-2}{\cdot}s^{-1}$, respectively. Those were the highest numerical values among other poplar clones. On the other, the total chlorophyll and carotenoid contents of P. deltoides hybrid clones were higher than those of P. euramericana clones in July. Particularly, the total chlorophyll content of clone 97-18 was $2.37mg{\cdot}g^{-1}FW$. In August, those of P. deltoides hybrid clones decreased than in July. In term of the physiological activity such as net photosynthetic rate and stomatal conductance of P. deltoides hybrid clones were much lower in August than in July. As a result, physiological characteristics of P. euramericana Venziano clone was superior than the other clones in Short rotation coppice (SRC) in Saemanguem area.

본 연구에서 일반 토양에 비해 무기양분 함량이 적고 배수성이 좋지 않은 새만금간척지 토양에 식재 된 포플러 수종의 생리적 특성을 조사하였다. 7월과 8월에, 이태리포플러 클론인 Venziano, L.Avanzo와 미루나무 교잡종 클론인 97-18, 97-19은 생리적인 특성의 차이를 보였다. 이태리포플러 클론이 미루나무 교잡종 클론에 비해 생리적 특성이 우수하였다. 특히 Venziano 클론의 순광합성률은 각각 평균적으로 $18.62{\mu}mol\;CO_2\;m^{-2}{\cdot}s^{-1}$, $17.11{\mu}mol\;CO_2\;m^{-2}{\cdot}s^{-1}$로 다른 클론들과 비교해서 높은 수치를 보였다. 반면, 미루나무 교잡종인 97-18클론의 7월 광색소 함량은 $2.37mg{\cdot}g^{-1}FW$으로 가장 높은 수치를 보였으나, 8월에는 이태리포플러 클론보다 낮은 함량을 보였다. 미루나무 교잡종은 8월에 순광합성률, 광색소함량 등 전반적인 생리적 활성이 떨어졌다. 결론적으로, 새만금간척지에 식재된 포플러 묘목의 생리적인 특성은 이태리포플러 종인 Venziano 클론이 우수하였다.

Keywords

References

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