番石榴採收時期對果實品質影響之研究

Effects of Harvested Season on Fruit Quality of Guava (Psidium guajava L.)

王武彰(W.C. Wang)

《中華農業研究》 41卷3期 (1992/09) Pp. 261-270

https://doi.org/10.29951/JARC.199209.0005

摘要

番石榴在本省可以週年生產，但是果實品質會因品種與採收季節之不同而異，本試驗之結果發現番石榴果實之果肉厚薄，糖度，枸櫞酸含量，種子數目與果肉乾物率均隨品種與採取季節之不同而有明顯差異。泰國拔與白拔於2~6月間採收之果實果肉較薄。種子數目以4月採收之泰國拔與3月採收之白拔最多，分別高達577粒／果與308粒／果。糖度(Brix)則以2~3月採收之泰國拔與6~8月採收之白拔較低，分別為7.7~7.8%與7.1~7.6%。枸櫞酸含量以泰國拔較為穩定，全年均維持在0.3%左右，而白拔則因採收季節而有明顯差異，5~7月採收者較低，2~4月採收者為高，其含量各為0.4~0.5%與0.7~0.8%。兩品種果實果肉之乾物率則以12月至翌年2月採收者含量較少。

關鍵字

番石榴 ； 果實 ； 採收時期 ； 品質

並列摘要

Guava could be harvested year-round in Taiwan, However, fruit quality varied with varieties and harvested seasons. The results of present study indicated that the flesh diameter, sugar content (Brix), citric acid content, number of seeds and the rate of flesh dry matter obviously vary with varieties and harvested seasons. A thinner in flesh diameter was found in fruit of both Thai-Kou-Bar and Pai-Bar when the fruits were harvested in February-June. Seed content was highest in which the fruit was harvested in April for Thai-Kou-Bar (577seeds/ fruit) and in March for Pai-Bar (308seeds/fruit). Sugar content Brix) was lowest for the fruit harvested in February-March for Thai-Kou-Bar (7.7-7.8%) and in June-August for Pai-Bar (7.1-7.6%). There was a steady citric acid content (more or less 0.3%) in Thai-Kou-Bar for year around harvested fruit. However, a significant difference was found in Pai-Bar. It was lower for the fruits harvested in May-July and higher in February-April. The citric acid content was 0.4-0.5% and 0.7-0.8%, respectively. Dry weight content was lower from December, 1987 to February, 1988 for both varieties.

並列關鍵字

Guava ； Fruit ； Harvested season ； Quality