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단감(Diospyros kaki)의 동상해 평가를 위한 엽록소 형광 이미지 분석법의 활용
유성영 ( Sungyoung Yoo ),박소현 ( Sohyun Park ),이민주 ( Minju Lee ),박종용 ( Jongyong Park ),강홍규 ( Honggyu Kang ),강성구 ( Sungku Kang ),김태완 ( Taewan Kim ) 한국환경농학회 2015 한국환경농학회지 Vol.34 No.3
BACKGROUND: In korea, sweet persimmon(Diospyros kaki) cultivation is front to abiotic stresses such as frost damage at fruit maturing stage. The cold and rapid freezing stresses are most damaging to fruit production which is most actively progressed in late fall. This study was performed to evaluate the validity of chlorophyll fluorescence imaging(CFI) technology to determine the degree of frost damage in sweet persimmon fruits. METHODS AND RESULTS: The sweet persimmon fruits were measured separately for each treatment(15, 30, 60 minutes) at 24 hours after treatment(HAT) rapid freezing. A CFI FluorCam (FC 1000-H, PSI, Czech Republic) was used to measure the fluorescence images of the fruits. In rapid freezing for 15 minutes, photochemical parameters were not changed. However, in rapid freezing for 30 and 60 minutes, photochemical parameters were lowered. Especially, Fm, Fv, Fv/Fm and ΦPSII values were declined under rapid freezing. CONCLUSION: In our study, it was clearly indicated that the rapid freezing could be a stress in sweet persimmon fruits. The CFI analysis and its related parameters are applicable as a rapid assessing technique for the determination of frost damage.