The master's thesis will be discussed by Allah Almighty. Researcher/Radiance Abdel Wahab Mohammed Al Ameri (Yemeni nationality) The Tutor in the microbiology department-Faculty of Applied Sciences-Ta'izz University-Yemen On Tuesday, 2017/5/9 m at 11 a.m. Hall of the late Prof. Dr. Mohamed Ibrahim Abdel Qader, Department of Plant and Microbiology, faculty