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Relationship between Yearly Fruit Growth and Climatic Factors in 'Niitaka' Pear

배 '신고'의 연차간 과실 생장과 기상 요인과의 상관성

  • Han, Jeom Hwa (National Institute of Horticultural & Herbal Science) ;
  • Son, In Chang (National Institute of Horticultural & Herbal Science) ;
  • Choi, In Myeong (National Institute of Horticultural & Herbal Science) ;
  • Kim, Seung Heui (National Institute of Horticultural & Herbal Science) ;
  • Cho, Jung Gun (National Institute of Horticultural & Herbal Science) ;
  • Yun, Seok Kyu (National Institute of Horticultural & Herbal Science) ;
  • Kim, Ho Cheol (Division of Horticulture and Pet Animal-Plant Science, Wonkwang University) ;
  • Kim, Tae-Choon (Division of Horticulture and Pet Animal-Plant Science, Wonkwang University)
  • Received : 2012.06.18
  • Accepted : 2012.10.10
  • Published : 2013.02.28

Abstract

This research was conducted to investigate the effect of climatic factors on fruit growth in 'Niitaka' pear (Pyrus pyrifolia). For ten years from 2000 to 2010, average full bloom date was April 19th and standard deviation was 4.2 days. Average fruit diameter 160 days after full bloom (DAFB) was 102.4 mm and standard deviation was 7.5 mm. Variance coefficients among climatic factors were higher in rainfall amount and sunshine hours than temperature. Only sunshine hours of climatic factors accumulated during the 160 DAFB had significant positive relationship ($r=0.68^*$) with fruit diameter 160 DAFB. Between full bloom date and fruit diameter 160 DAFB had no significant relationship. Fruit growth in 2004, as continuous rain fall and short sunshine hours, showed opposite pattern compared to that in 2009. Therefore, fruit growth of 'Niitaka' pear was more influenced by the accumulated sunshine hours than accumulated temperature.

본 연구는 배 '신고'의 과실 생장에 대한 주요 기상 요인의 영향을 알아보고자 수행하였다. 2000년에서 2010년까지 평균 만개일은 4월 19일이었고, 편차는 4.2일이었다. 만개 후 160일째의 평균 과실 횡경은 102.4mm였고 편차는 7.5mm였다. 10년간 기상 요인 중 기온보다 강우량과 일조시수의 변이계수가 컸다. 만개 후 160일째의 과실 횡경은 만개 후 160일 동안의 기상 요인 중에서 누적 일조시수가 상관계수 $r=0.68^*$로 정의 상관을 보였다. 만개일의 조만과 만개 후 160일째의 과실 횡경 간에는 상관성을 나타내지 않았다. 상반된 과실 생장 경향을 보였던 2004년과 2009년은 지속적인 강우 시기의 존재와 그에 따른 일조시수의 차이에 의한 것이었다. 따라서 배 '신고'의 과실 생장은 기온보다는 누적일조시수의 영향을 많이 받는 것으로 판단되었다.

Keywords

References

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