Abstract
'Wonhwang' pear ($Pyrus$ $pyrifolia$ Nakai) often showed physiological disorder and quality deterioration during long-term storage and shelf life although this cultivar has the advantage of a good appearance and better taste for overseas exportation. This study was conducted to investigate the effect of temperature during transportation and continuing market temperature on fruit quality, and the occurrence of physiological disorder to set up the appropriate transportation and distribution temperatures in the fruits harvested at different times. Unripe fruits harvested 120 days after full bloom maintained higher firmness until 21days of shelf life at both 18 and $25^{\circ}C$ than late harvested ones. Otherwise, ripe fruits harvested 130 days after full bloom showed high incidence of mealiness breakdown of flesh tissues in 21 days of shelf-life at $25^{\circ}C$ of market temperature, but not in the fruits stored at $18^{\circ}C$. Late harvested fruits showed much severe physiological disorders when compared with early harvested ones that showed relatively lower respiration rates. Fruit quality parameters were more highly affected by market temperature than transportation temperature. Results showed that unripe fruits harvested at 120 days after full bloom maintains high marketability until 21 days of shelf-life, while the maximum shelf-life of ripe fruits harvested 130 days after full bloom will be considered at within 7 days.
본 실험은 만개후 120일, 130일에 수확 후 과실의 숙도별 적정수송온도 및 유통온도의 설정을 위하여 유통기간 중 과실의 품질과 생리장해 발생을 조사하여 상온보구력을 측정하였다. 미숙과는 유통 21일까지 처리구에서 경도를 유지하였으나 적숙과는 $25^{\circ}C$ 유통온도에서 과육이 분질되어 상품성을 상실하였다. 생리장해 발생은 적기수확과가 조기수확과에 비해 장해발생이 심하였고 이는 호흡과 밀접한 관계가 있었다. 유통기간 중 수송온도 보다 유통온도가 상온보구력에 큰 영향을 주었고 수송온도 또한 낮은 온도가 유리하였다. 과실의 품질과 생리장해 발생을 고려한 결과 조기수확과는 유통 21일까지 상품성을 유지하였으나 적기수확과는 7일 이내로 판단되었다.
