บทคัดย่องานวิจัย

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Response of apples to diazocyclopentadiene inhibition of ethylene binding.

Blankenship, S. M.; Sisler, E. C.;

Postharvest Biology and Technology Year: 1993 Vol: 3 Issue: 2 Pages: 95-101 Ref: 6 ref.

1993

บทคัดย่อ

Response of apples to diazocyclopentadiene inhibition of ethylene binding.

Diazocyclopentadiene (DACP) is a light-activated compound which is thought to inhibit ethylene binding in plants. Starkrimson apple fruits harvested at a mature, preclimacteric stage were treated for 24 h in the light with DACP applied in hexane solution onto paper to facilitate evaporation. Treated fruits sampled after 10, 20 and 30 days' storage in air at 21 deg C had lower internal ethylene concentrations than untreated fruits. Higher concentrations of DACP (up to 10 micro l gas/litre) were more effective over longer periods of time. Untreated fruits had a flesh firmness of 46 N after 30 days, compared with 73 N in DACP-treated fruits. Starch conversion was initially retarded by DACP treatment, but by 30 days all starch was lost. Retreatment of fruits with DACP during the 30-day storage period did somewhat renew the effect on suppression of ethylene, but did not further affect flesh firmness or starch conversion. Fruits treated once with DACP at harvest, then held at 0 deg , contained much lo

wer levels of internal ethylene and were approximately 10 N firmer after 18 weeks' storage than untreated fruits.