Development of a strategy to induce RNA-silencing in squash against virus diseases by genetic transformation [Elektronische Ressource] / presented by Yehia Khidr

FACULTY OF AGRICULTURAL SCIENCES Institute for Special Crop Cultivation and Crop Physiology University of Hohenheim PD Dr. Goetz Reustle Development of a strategy to induce RNA-silencing in squash against virus diseases by genetic transformation Dissertation Submitted in fulfilment of the requirements for the degree “Doktor der Agrarwissenschaften” (Dr.sc.agr. / Ph.D. in Agricultural Sciences) to the Faculty of Agricultural Sciences presented by Yehia Khidr Egypt 2007 This thesis was accepted as a doctoral dissertation in fulfilment of the requirements for the degree “Doctor der Agrarwissenschaften by the Faculty Agricultural Sciences at University of Hohenheim” on 05.04.2007. Date of oral examination: 23.04.2007 Examination Committee Supervisor, Reviewer and Examiner PD Dr. G. M. Reustle Co-Reviewer and Examiner Prof. Dr. G. Weber Examiner Prof. Dr. H. Buchenauer Vice-Dean and Head of the Committee Prof. Dr. W. Bessei Was wir wissen ist ein Tropfen, was wir nicht wissen, ein Ozean. Isaac Newton (1643-1727) To my parents, wife and children Acknowledgement First of all I am deeply grateful to Dr.