Hutheyfa Ali Alswalmeh Plant Production Dept., College of Food and Agric. Sci., King Saud Univ., P.O. Box 2460, Riyadh 11451 Saudi Arabia
Rashed Sultan Al-Obeed Plant Production Dept., College of Food and Agric. Sci., King Saud Univ., P.O. Box 2460, Riyadh 11451 Saudi Arabia
Alaa El-Din k Omar http://portal.ksu.edu.sa/faculty/aomer Department of Horticulture (Pomology), Faculty of Agriculture, Kafrelsheikh University Egypt