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KMID : 0903620040450040212
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Journal of the Korean Society for Horticultural Science
2004 Volume.45 No. 4 p.212 ~ p.215
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Control of Preharvest Drop and Fruit Quality by Using Aminoethoxyvinylglycine in Mibaekdo Peaches
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KIm Im-Soo
Choi Chung-Don
Lee Dong-Hoon
Kim Dae-Il
Byun Jae-Kyun
Lee Hee-Jae
Kim Dae-Hyun
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Abstract
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Aminoethoxyvinylglycine (AVG) with various concentrations was sprayed onto 5-year-old peach (Prunus persica cv. Mibaekdo) trees July 16 and July 7, about 3 and 4 weeks before the predicted harvest date. The AVG sprays greatly reduced preharvest fruit drop in a concentration-dependent manner. The AVG sprays at July 16, seemed to be more effective than those at July 7. With AVG sprays at any spray time and the concentrations applied, the fruit harvest date was delayed by 3 days. At harvest date, the AVG-sprayed fruit had significantly higher weight than the control fruits. Furthermore, the AVG sprays tended to decrease fruit firmness and acidity, but increase soluble solids contents at harvest. These effects appeared to be associated with the suppression of the fruit respiration rate and ethylene production, since the AVG spray delayed the onset of respiration and ethylene production of the fruits. Thus, our results suggest that fruit harvest could be regulated by appropriate use of AVG.
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KEYWORD
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ethylene, fruit firmness, Prunus persica, respiration rate
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