摘要： 本計畫主要在於採收前與採收後技術，以提昇鳳梨品質和開發耐低溫鳳梨品種選拔。本年度有 5 個工作項目： 1. 研究套袋和抗逆境藥劑對提昇冬果鳳梨品質效果之研究。 2. 研發採後熱處理以提昇冬果鳳梨品質之方法。 3. 調查分析不同鳳梨品種及同一品種不同地區生產之果實低溫忍受性之差異。 4. 測試鳳梨組培小苗在不同低溫條件下之耐受性。 5. 測試鳳梨組培小苗在低溫培養條件下對EMS誘變處理之耐受性。This research project is aimed to improve the winter pineapple fruits quality by pre harvest and -postharvest for the production and marketing of high quality pineapple fruits, and to develop an efficient method for in vitro somaclonal mutation induction and selection of chilling tolerance of pineapple cultivars. There are 5 experiment scheduled for this year. There are 1. effect of bagging and chemical treatment before harvest on the fruit quality of winter pineapple. 2. effect of heat treatment on the reducing acidity of winter pineapple. 3.investigating the difference in chilling tolerance of fruits produced from different locations and fruits of different pineapple cultivars. 4. examining the chilling tolerance limit of pineapple tissue culture plantlets. 5. examining the tolerance of pineapple tissue culture plantlets to the EMS treatment under different low temperature condition.