บทคัดย่องานวิจัย

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Ethylene delays onset of woolly breakdown in cold-stored peaches.

Sonego, L.; Lers, A.; Khalchitski, A.; Zutkhi, Y.; Zhou, H.; Lurie, S.; Ben-Arie, R.;

Biology and biotechnology of the plant hormone ethylene II. Proceedings of the EU-TMR-Euroconference Symposium, Thira (Santorini), Greece, 5-8 September, 1998. Year: 1999 Pages: 405-410 Ref: 13 ref.

1999

บทคัดย่อ

Ethylene delays onset of woolly breakdown in cold-stored peaches.

Peach cv. Hermosa fruits were stored at 0 deg C in a flow through system which supplied ethylene at concentrations of 0, 1, 10 or 100 micro l/litre. Fruits were examined during 6 weeks of storage, at removal from 0 deg C and after 5 days at 20 deg C. The onset of woolly breakdown (WB) was delayed and its severity was reduced following exposure to ethylene at 1 or 10 micro l/litre. Fruit softening was not significantly affected by ethylene treatment. Polygalacturonase (PG) activity, which was undetectable in control fruits during storage at 0 deg C, was induced by ethylene at 0 deg C and enhanced 5- to 10-fold after transfer to 20 deg C. However, PG protein content was unaffected by ethylene treatment. Pectin methylesterase (PME) content and activity, which increased during cold storage, were not affected by ethylene treatment. The mRNA for both pectic enzymes were detected at all stages of storage and ripening, but were unaffected by ethylene treatment, as were the mRNAs for ACC synthase and ACC

 oxidase.