الفهرس 
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Abstract
ACKNOWLEDGEMENT
l wish to express my appreciation ana gratitud to Dr.
ABDEL-AZIM M. EL- HAMMADY and Dr. IBRAHIM M. EL-DESOUKY,
professors of pomology, Faculty of Agriculture, Ain Shams
university, for their supervision guidance, encouragement,
valuable suggestions and review of this manuscript.
I am also extenoing my oeep gratitude for Dr. ASSEM D.
SHALTOUT, Lecturer of pcmology, Faculty of Agriculture, Ain
Srams Un1versity for his superv1s1on, sincere help and unfailing
efforts curing the course of this Investigation.
l also feel that I must extend my deep gratitude for the
greatest man in my life, my father.
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