Low-temperature induction of ripening capacity in ‘Comice’ and ‘Bosc’ pears as influenced by fruit maturity
David Sugar and Sally R. Basile
Postharvest Biology and Technology, Volume 51, Issue 2, February 2009, Pages 278-280
2009
บทคัดย่อ
Low-temperature induction of ripening capacity in ‘Comice’ and ‘Bosc’ pears as influenced by fruit maturity
The relationship between fruit maturity at harvest and the duration of postharvest exposure to −1 °C required to induce ripening capacity was studied in ‘Comice’ and ‘Bosc’ pears. As fruit of both cultivars were harvested progressively later, shorter durations of exposure to −1 °C were required to induce ripening capacity. The relationship between the duration of conditioning at −1 °C and the fruit flesh firmness after 7 d at 20 °C was well-described by second-order polynomial equations. These equations were used to determine the number of days at −1 °C required to induce ripening capacity for each harvest date. A linear relationship was observed between the number of days after fruit in the orchard reached maturity that fruit were harvested and the number of days of low-temperature conditioning needed to induce ripening capacity. This relationship may be used to predictively estimate the duration of low-temperature conditioning required to induce ripening based on harvest date.