الفهرس | Only 14 pages are availabe for public view |
Abstract The research study in this thesis was carried out at Tissue Culture Laboratory Research- Horticulture Research Institute - Agriculture Research Centre and Al-Qanater Horticultural Research Station, Qalubia Governorate. in cooperation with Department of Horticultural - Faculty of Agriculture - Benha University during the years from 2016 to 2020. Three experiments were applying in this study; The first trail was conduct to formation Nanoparticles compounds that containing chitosan and copper reduced by various reducing agent such as guava dry leaves extraction, ascorbic acid and sesame oil. and Cytotoxicity effect of successive Copper -guava NPs on normal lung cells MRC-5 cell. The second experiment were studied the effect of each chitosan Nanoparticles and copper Nanoparticles with reducing agents on growth of Erwinia amylovora.by disk diffuse test. The third experiment were studied the effect of each chitosan Nanoparticles and copper Nanoparticles with reducing agents on fire blight disease severity % caused by Erwinia amylovora in field. Finally, Open field Nanomaterials application (improvement growth and fruiting aspects of Le-Conte pear trees). Generally, data obtained that a solution of chitosan nanoparticles and copper nanoparticles prepared by Guava leaf extract can be used for reducing infection of Pyrus communis fire blight disease, as well as improvement growth, nutritional status, productivity and fruit qualit |