Effects of some postharvest treatments on anthocyanin synthesis and quality in 'Fuji' apples.
Bae, R. N.; Lee, S. K.;
Journal of the Korean Society for Horticultural Science Year: 1994 Vol: 35 Issue: 6 Pages: 599-609 Ref: 33 ref.
1994
บทคัดย่อ
ABSTRACT :
Apple cv. Fuji fruits were harvested 60, 93 or 123 days after full bloom (28 Apr.) then kept in the dark or treated with low (400-500 lx) or high (1500-2000 lx) light or high light + 70 p.p.m. ethylene for 20 days. Peel coloration in response to treatments was observed in fruits harvested 93 or 123 days after full bloom, but not in those harvested 60 days after full bloom. In trials of further treatments, blue light was more effective at inducing peel coloration than fluorescent, white or red light. Light was essential for anthocyanin synthesis, showing synergistic effects with 600 p.p.m. ethephon at 20 deg C (stored for 75 days). Fruits exposed to light treatment at 20 deg for 1 day after one month of storage at 0 deg had higher ethylene forming enzyme, phenylalanine ammonia-lyase and polyphenol oxidase [catechol oxidase] activities and higher abscisic acid, zeatin, auxin and ethylene contents than fruits just stored at 0 deg for a month.