採收前水分管理對椪柑果實貯藏期間損耗情形之影響

Abstract

為探討採收前斷水處理對' 椪柑' 貯藏期間果實損耗情形之影響，連續二年進行果樹於採收前56 天、28 天、14 天、7 天及 3 天停止補充灌溉之試驗。二供試年期均顯示採收前3 天才斷水植株之果實，較採收前56 天即斷水者，其果實失重率較高，且綠蒂率減少較快。2005 年期採收前3 天才斷水者，其所結果實浮皮率較高；2006 年期接近採收前才斷水的植株，其果實腐爛率顯著高於採收前28 天即已斷水者。 To study the effect of pre-harvest water management on the deterioration in 'Ponkan' mandarin during storage, irrigation was ceased 56, 28, 14, 7 and 3 days prior to harvest for two consecutive years. Fruit harvested from trees subjected to cessation of water supply 3 days prior to harvest showed greater weight loss and a greater decrease in the rate of green button than those picked from trees subjected to cessation of water supply 56 days prior to harvest for the two years. The former also displayed a higher percentage of peel puffing in 2005. In addition, fruits from all the groups stopping the supply of water too close to harvesting exhibited a higher decay percentage compared with fruits treated with withholding water for 28 days before harvesting in 2006.