BBAuthors: Ali, Rania T.; Advisor: -; Participants: Abdel-Ghany, Enas M.; Mohamed, Fawzia I.; Hanna, Evon M.; Elashery, Zeinab M. (2019)
This study was designed to evaluate two promising bio-fertilizers: Moringa oleifera leaf extract (5.0, 10.0, 20.0%) and Sacharomyces cerevisiae aqueous extract (5.0, 10.0, 20.0%) for their safe usage on Allium cepa root meristems as a model system for monocots after 3.0 h of direct treatment. This evaluation focused on both cytogenetic and cytological levels. Cytogenetic studies screened the effect of each extract on the mitotic apparatus considering the mitotic index, mitotic phase index, percentage, and type of abnormalities. Cytological studies with transmission electronic microscope screen the effect of each extract on ultra-structural organelles (mitochondria, endoplasmic reticul... 
