บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Changes of polyamine, ACC contents and EFE activity in the peel and pulp of Japanese pear fruits during a postharvest period.

Wei, J.; Tanabe, K.; Tamura, F.;

Journal of the Faculty of Agriculture, Tottori University Year: 1994 Vol: 30 Pages: 1-6 Ref: 10 ref.

1994

บทคัดย่อ

Changes of polyamine, ACC contents and EFE activity in the peel and pulp of Japanese pear fruits during a postharvest period.

ABSTRACT

Of the 2 Japanese pear (Pyrus serotina [P. pyrifolia]) cultivars studied, fruits of Kikusui showed a major peak of ethylene production 9 days after harvest while Nijisseiki showed only a small peak 18 days after harvest. Otherwise, the rate of ethylene production was closely associated with the activity of ethylene forming enzyme (EFE), the content of 1-amino-cyclopropane-1-carboxylic acid (ACC) and polyamine metabolism. It was also found that fruit pulp consistently showed greater EFE activity than peel, but there was no clear difference in ACC contents between them. Putrescine and spermidine were the major polyamines found in the fruit during the postharvest period in both cultivars. Before the peak of ethylene production there were clear differences in the changing pattern of polyamine contents between the pulp and peel of the 2 cultivars. It appeared that high putrescine content and low spermidine content were related to the low rate of ethylene production.