採收前水分管理對椪柑果實貯藏中品質變化之影響

Effects of Pre-Harvest Water Management on Quantitative Changes of Quality Attributes in 'Ponkan' Mandarin (Citrus reticulata Blanco)

唐佳惠(Chia-Hui Tang)

《台灣農業研究》 66卷2期 (2017/06) Pp. 126-133

https://doi.org/10.6156/JTAR/2017.06602.05

摘要

為探討採收前斷水處理對椪柑貯藏期間果實品質指標值變化之影響，供試植株分別於採收前56、28、14、7 及3 d 施行斷水處理。根據試驗結果，採前7 d 才斷水者，其果實於貯藏1 mo 後即開始顯現果肉乾粒化，較其他斷水期限者早。從癒傷結束至貯藏1 mo 時，取樣自採收前56 d 即斷水植株之果實，其果汁率高於其他斷水期限。2005 年供試植株不論斷水期限為何，其果實貯藏1 mo 時，可溶性固形物含量均較癒傷結束時略增，之後再逐漸降低，但2006 年則無先增後降之情形。果實貯藏期間的可溶性固形物含量，有植株斷水越遲者下降越快的趨勢。2 供試年期之果實，貯藏至採收後3 mo 時，可溶性固形物含量介於5.8-7.5°Brix 之間，而可滴定酸含量均在0.22% 以下，食用味道已偏淡薄。

關鍵字

椪柑 ； 貯藏 ； 果肉乾粒化 ； 果實品質

並列摘要

To study the effect of pre-harvest water management on medium size (25 cm) 'Ponkan' mandarin, irrigation was suspended 56, 28, 14, 7 and 3 days prior to harvest and irrigation was withheld as a control in two consecutive years. Withholding water supply 7 days prior to harvest produced earlier the incidence of granulation than in the other treatments. After 1-month of fruit storage, withholding water supply 56 days prior to harvest produced more juice content than in the other irrigation treatments. At the initial storage, the total soluble solids (TSS) was observed increased at 2005 over the treatments. After 2-month of storage, it was found decreased, but not in fruit harvested from 2006. The TSS content of fruit decreased gradually with the advancement of the storage period and the decreasing trend was influenced significantly by different treatments.

並列關鍵字

'Ponkan' mandarin ； Storage ； Granulation ； Quality