Korean Journal of Agricultural and Forest Meteorology (한국농림기상학회지)

Korean Society of Agricultural and Forest Meteorology (한국농림기상학회)
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Estimation of Dormancy Breaking Time by Development Rate Model in 'Niitaka' Pear(Pyrus pirifolia Nakai)

발육속도 모델을 이용한 배 '신고' 자발휴면타파시기 추정

  • Published : 2008.06.30
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Abstract

This study was carried out to determine the availability of development rate(DVR) model for predicting bud break time of 'Niitaka' pear. In addition, the study also assessed the effect of an increase in temperature on predicting bud dormancy breaking time in winter season. The DVR model, which was developed for 'Kosui' pear, illustrated that the bud break time(e.g., Dec. 12-Dec. 19) of 'Niitaka' pear observed in the field corresponded to the predicted bud break time by DVR model. This result indicates that the bud break time of 'Niitaka' pear can be predicted by DVR model tuned for 'Kosui' pear. As the temperature increased during the winter season, the bud break time was delayed. Chilling requirement deficiency for the bud break time is expected in Jeju Province when the temperature increased above $4^{\circ}C$ in winter season.

배 '행수'의 자발휴면기의 발육속도 모델을 이용하여 배 '신고'의 자발휴면 타파기 예측 가능성을 검토하였으며, 나아가 겨울철 기온이 온난화됨에 따른 휴면타파시기의 변화를 검토하였다. 모델에 의해 예측된 자발휴면 타파시기와 포장에서 조사된 휴면타파시기가 12월 12일$\sim$12월 19일로 일치하여 배 '행수'의 발육속도 모델을 배'신고'에 적용하는 것이 큰 무리가 없는 것으로 판단되었다. 기온이 상승함에 따라 휴면타파시기가 지연되었으며, $4^{\circ}C$이상 상승하면 제주도를 중심으로 휴면타파에 필요한 저온 부족현상이 발생될 것으로 추정되었다.

Keywords

References

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