บทคัดย่องานวิจัย

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Effect of relative humidity on ripening of 'Le Lectier' pear fruit.

Murayama, H.; Satoh, D.; Ohta, Y.; Fukushima, T.;

Acta Horticulturae Year: 1995 Issue: No. 398 Pages: 187-193 Ref: 10 ref.

1995

บทคัดย่อ

Effect of relative humidity on ripening of 'Le Lectier' pear fruit.

 

Harvested fruits were held at 55, 75 or 95% RH and 20 deg C. Fruits kept at 95% RH softened rapidly after 3 weeks and firmness was <10 N after 5 weeks. Softening was accompanied by a marked increase in ethylene production and ACC content after 4 weeks. Fruits kept at 55 and 75% RH had not softened much even after 4 weeks. After 8 weeks' storage, these fruits still had not produced increased levels of ethylene or ACC. Exogenous ethylene application (2000 p.p.m. for 48 h) to fruits held at 55% RH for 5 weeks produced a rapid rise in both metabolites and resulted in rapid softening. The cell wall water-soluble polyuronide content increased while the HCl-soluble polyuronide content decreased in treated fruits. Fruits held at 1 deg for 2 weeks prior to storage at 55% RH and 20 deg softened and ripened normally.