Korean Journal of Agricultural and Forest Meteorology (한국농림기상학회지)

Korean Society of Agricultural and Forest Meteorology (한국농림기상학회)
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Effect of Wind Velocity on Photosynthesis, Sap Flux, and Damage of Leaves in Apple Trees

풍속이 사과나무의 광합성 특성과 수액이동 및 엽손상에 미치는 영향

  • Yim, Ji Hye (Fruit Research Division, National Institute of Horticultural & Herbal Science) ;
  • Choi, Young Min (Department of Horticulture, Chonhuk National University) ;
  • Choi, Dong Geun (Department of Horticulture, Chonhuk National University)
  • Received : 2014.06.01
  • Accepted : 2014.06.29
  • Published : 2014.06.30
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Abstract

This study was carried out to determine the effects of wind speed on physiological responses in 'Fuji' apple (Malus pumila Miller). Two levels of wind blowing (3 and $5m{\cdot}s^{-1}$) were produced by large electric fans. Photosynthetic rate was reduced by one-way wind blowing treatment at $5m{\cdot}s^{-1}$, compared to the mild wind control, and this reduction was more obvious with stronger wind and increasing duration of wind application. The reduction in photosynthesis by the wind treatments was correlated with that in the proportion of opened stomates and stomatal conductance. The one-way wind treatment at $5m{\cdot}s^{-1}$ caused a leaf browning and leaf fall, and this negative effect became more serious with increasing time of exposure to the wind treatments. The sap flux through stem increased in all wind treatments compared to the natural mild wind.

본 연구는 바람이 생육기별 사과 '후지' 품종(Malus pumila Miller)의 수체반응에 미치는 영향을 구명하기 위하여 시행하였다. 바람처리는 대형선풍기로 풍속을 $3m{\cdot}s^{-1}$와 $5m{\cdot}s^{-1}$로 처리하여 자연상태의 바람과 비교하였다. 사과 '후지'에 바람처리를 하였을 때 바람세기가 강하고 처리시간이 누적될수록 광합성속도가 낮은 경향을 나타내었다. 또한 열려있는 기공의 비율과 기공전도도는 광합성속도와 정의상관을 나타내었다. $5m{\cdot}s^{-1}$처리에서는 잎에 불규칙한 형태의 갈변현상이 발생하였고, 파엽 및 낙엽의 피해는 바람세기가 강할수록, 그리고 처리시간이 누적됨에 따라 심화되었다. 수액이동량의 경우 대조구를 제외한 모든 바람처리구에서 증가하는 경향을 나타내었다.

Keywords

References

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