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Changes of Photosynthesis, Leaf and Fruit Characteristics of Actinidia arguta and Hybrid Kiwi (A. arguta × A. deliciosa) According to Crown Layer

다래(Actinidia arguta) 및 교잡종 다래(A. arguta × A. deliciosa)의 수관층위에 따른 광합성, 엽 그리고 과실의 특성 변화

  • Park, Youngki (Division of Special-purpose Trees, Korea Forest Research Institute) ;
  • Han, Jingyu (Division of Special-purpose Trees, Korea Forest Research Institute) ;
  • Hwang, Suk-In (Division of Special-purpose Trees, Korea Forest Research Institute) ;
  • Kim, Sea-Hyun (Division of Special-purpose Trees, Korea Forest Research Institute) ;
  • Kang, Moon-Su (Division of Special-purpose Trees, Korea Forest Research Institute)
  • 박영기 (국립산림과학원 산림자원육성부 특용자원연구과) ;
  • 한진규 (국립산림과학원 산림자원육성부 특용자원연구과) ;
  • 황석인 (국립산림과학원 산림자원육성부 특용자원연구과) ;
  • 김세현 (국립산림과학원 산림자원육성부 특용자원연구과) ;
  • 강문수 (국립산림과학원 산림자원육성부 특용자원연구과)
  • Received : 2010.06.07
  • Accepted : 2011.01.04
  • Published : 2011.03.31

Abstract

This study was carried out to investigate the change of photosynthesis, leaf and fruit according to crown layers in Actinidia arguta and hybrid kiwi. Photosynthesis rate (PPFD $1,000{\mu}mol{\cdot}m^{-2}s^{-1}$) were 5.82, 7.11, $9.54{\mu}mol\;CO_2\;m^{-2}s^{-1}$ at lower, middle, and upper position, respectively in 3 layer cultivation type. The length and area of leaves collected from lower position have lager value than upper position. The fruit quality of A. arguta and hybrid kiwifruit increased with increasing crown height. A linear correlation ($R^2=0.72$, 0.89 and 0.98) was shown between fruit weight (Boeun 4, Injea 16 and HM3) and the height of crown layer(layer 1, 2, and 3). From the results, we can suppose that the tree of the upper position of crown layer in the cultivation of A. arguta and hybrid kiwifruit produce high quality fruit due to its high photosynthesis ability.

본 연구는 다래 및 교잡종 다래의 수관층위에 따른 광환경 차이에 따른 광합성능력, 엽 그리고 과실의 특성 변화를 구명하고자 실시하였다. 수관층위별에 따른 광합성속도를 측정한 결과, 수관층위가 높아질수록 광합성 속도가 증가하여 광도 $1,000{\mu}mol{\cdot}m^{-2}s^{-1}$에서 하층($5.82{\mu}mol\;CO_2\;m^{-2}s^{-1}$), 중층($7.11{\mu}mol\;CO_2\;m^{-2}s^{-1}$), 상층($9.54{\mu}mol\;CO_2\;m^{-2}s^{-1}$)의 순으로 높은 광합성속도를 나타냈다. 엽의 경우, 수관층위가 높아질수록 엽폭과 엽장 그리고 엽면적이 감소하였다. 즉, 하층, 중층, 상층 수관층위가 증가할수록 엽면적은 162.8, 90.9, $68.3cm^2$ 로 각각 감소하였다. 과실의 경우에는 수관층위가 높아질수록 과실 중량 및 과실 폭과 과실 길이가 증가하는 경향을 나타냈다. 이러한 결과는 상층의 높은 광합성능력이 과실의 생육에 영향을 미친 것으로 수관상층부로의 결과지 유도를 통해 대립성 다래 과실생산이 가능할 것으로 여겨진다.

Keywords

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