한국농림기상학회지, 제 11권 제4호(2009) (pISSN 1229-5671, eISSN 2288-1859)
Korean Journal of Agricultural and Forest Meteorology, Vol. 11, No. 4, (2009), pp. 206~212
DOI: 10.5532/KJAFM.2009.11.4.206
ⓒ Author(s) 2014. CC Attribution 3.0 License.


겨울기온 상승에 따른 복숭아 나무 ‘장호원 황도’ 품종의
결과지에 대한 동상해위험 공간분석:
I. 월동기간 중 동해유발온도 결정
정유란(1), 김진희(1), 김수옥(1), 최미희(1), 황규홍(2), 윤진일(1)
(1)경희대학교 생태시스템공학과, (2)주식회사 에스티에이

(2009년 12월 01일 접수; 2009년 12월 14일 수정; 2009년 12월 14일 수락)

Geospatial Assessment of Frost and Freeze Risk in
‘Changhowon Hwangdo’ Peach (Prunus persica) Trees
as Affected by the Projected Winter Warming in South Korea:
I. Determination of Freezing Temperatures
Uran Chung (1), Jin-Hee Kim(1), Soo-Ock Kim(1), Mi Hee Choi(1),
Kyu-Hong Hwang(2), Jin I. Yun(1)
(1)Department of Ecosystem Engineering, Kyung Hee University, Yongin 446-701, Korea
(2)STA Inc., Seoul 151-780, Korea

(Received December 01, 2009; Revised December 14, 2009; Accepted December 14, 2009)

ABSTRACT
We investigated the patterns of freeze injury in dormant ‘Changhowon Hwangdo’ peach fruit by observing the extent of browning and germination of the branches that were treated with freezing temperature sets simulating the process of natural freezing incidences in orchards. Under the treatment of freezing temperature of -15oC, the browning ratios were 15% for flower bud and less than 3% for both leaf bud and cambium. Under the -20oC treatment, the browning ratios were 40% for both flower and leaf buds and 1% for cambium. The browning ratios were 86%, 68% and 40% respectively for flower bud, leaf bud, and cambium under the -25oC treatment. All the samples showed 100% browning ratio under the -30oC treatment. The budburst ratios of leaf buds were 85%, 66%, 32%, and 0% under the -15, -20, -25 and -30oC treatments, respectively. The branches of peach fruit treated with the same freezing temperature showed different responses depending on the sampling date. In January the browning ratio was low and the budburst ratio was high whereas in February the opposite was the case, showing vulnerability of peach trees to low temperature after endo-dormancy release.

Keyword: Freeze injury, Peach tree, Browning, Budburst, Dormancy release, Global warming

MAIN

적요

실제로 동해가 발생한 해의 기온 경과양상에 근거한 저온처리조합을 만들어 복숭아 나무 ‘장호원황도’ 품종의 휴면지에 처리하여 갈변정도와 발아를 관찰함으로써 시기에 따른 휴면지의 부위별 동해양상과 동해유발온도를 파악하였다. 갈변율의 경우 -15oC에서 꽃눈은 10%, 잎눈과 형성층은 3% 미만이었으며 -20oC에서는 꽃눈과 잎눈은 40%, 형성층은 1%이었다. -25oC에서의 갈변율은 꽃눈과 잎눈이 86%와 68%, 형성층은 40% 이상이었고 -30oC에서는 모든 부위에서 100% 갈변되었다. 잎눈 발아의 경우 대조구(무처리)의 발아율을 100%로 두었을 때 -15oC에서는 85%, -20oC에서는 66%, -25oC에서는 32%의 상대발아율을 보였으며 -30oC에서는 전혀 발아하지 못했다. 동일한 저온처리의 경우 휴면심도가 깊은 시기로 알려진 1월 말에 채취한 시료에서 갈변율은 낮고 발아율은 높았다. 2월 이후에는 갈변율이 높고 발아율이 낮아 휴면해제 직후가 동해위험에 더 취약한 것으로 나타났다

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