الفهرس 
Introduction
Changes in fruit firmness (Ib/inch)of plum fruitsOnly 14 pages are availabe for public view
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Abstract
The present study was carried out during the two successive seasons of 2010 and 2011 to evaluate effect of ethephon application on ripening process of Kelsey plum fruits under room temperature and cold storage.In this study, Kelsey fruits were picked on September 29th in both seasons from a private orchard in kilo 85 Alex-Cairo desert roads near of Dena farm when the color of fruits was green yellow skin, firmness in fruit about was 8.8. The fruits were transported to the laboratory of Pomology Dept., Fac. of Agric., Mansoura Univ. Fruits were sorted to discard any defective and mechanical damaged fruits, and then uniform fruits in size and colour were washed with tap water and dried using air of electric fan. Fruits were divided to five groups; one of each was dipped for 5 minutes in one of the following solution:1- Control (dipping in water). 2- Ethephon at 250 ppm. 3- Ethephon at 500 ppm 4- Ethephon at 750 ppm. 5- Ethephon at 1000 ppm. -This study revealed the following results :1- Ethephon treatments increased loss in weight, decayed fruits and total loss in fruit weight of Kelsey plum fruits, these treatments enhanced fruit ripening due to their effect on reducing fruit firmness and chlorophyll A, B with increasing both soluble solids and anthocyanin contents. 2- Using ethephon at 1000 ppm to accelerate fruit ripening of Kelsey plum fruits and using cold storage at (3+ or -1 oC and R.H).