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http://dx.doi.org/10.5532/KJAFM.2009.11.4.206

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  

Chung, U-Ran (Department of Ecosystem Engineering, Kyung Hee University)
Kim, Jin-Hee (Department of Ecosystem Engineering, Kyung Hee University)
Kim, Soo-Ock (Department of Ecosystem Engineering, Kyung Hee University)
Choi, Mi-Hee (Department of Ecosystem Engineering, Kyung Hee University)
Hwang, Kyu-Hong (STA Inc.)
Yun, Jin-I. (Department of Ecosystem Engineering, Kyung Hee University)
Publication Information
Korean Journal of Agricultural and Forest Meteorology / v.11, no.4, 2009 , pp. 206-212 More about this Journal
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 $-15^{\circ}C$, the browning ratios were 15% for flower bud and less than 3% for both leaf bud and cambium. Under the $-20^{\circ}C$ 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 $-25^{\circ}C$ treatment. All the samples showed 100% browning ratio under the $-30^{\circ}C$ treatment. The budburst ratios of leaf buds were 85%, 66%, 32%, and 0% under the -15, -20, -25 and $-30^{\circ}C$ 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.
Keywords
Freeze injury; Peach tree; Browning; Budburst; Dormancy release; Global warming;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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