1. Medicinal and Aromatic Plants Researches Department; National Research Centre; 33 El-Bohouth Street Dokki, Giza Egypt
2. Faculty of Agriculture; Dalhousie University; PO Box 550 Truro NS B2N 5E3, Canada
3. PSIPW Chair, Prince Sultan Institute for Environmental, Water and Desert Research; King Saud University; PO Box 2454 Riyadh 11451 Saudi Arabia
4. Department of Botany (Plant Physiology Section); Faculty of Agriculture; Cairo University; Gammaa St. Giza 12613 Egypt
5. Department of Horticulture; Faculty of Agriculture; Zagazig University; Zagazig 44519 Egypt
6. V. L. Komarov Botanical Institute of the Russian Academy of Sciences; 2 Prof. Popova St. Saint Petersburg 197376 Russia