الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Insect pests are the major threat faces faba bean and soybean production which manage by several means, nanocides are new approach obtained to control their numbers. Silica nanoparticles (SiNPs) suggested to control faba bean main insect pests (Aphis craccivora and Liriomyza trifolii) as well as soybean main insect pest (Spodoptera littoralis). Results showed that SiNPs concentrations (75, 150, 225, 300, 375 and 425 ppm) occured high mortality in these pests numbers. On the other hand SiNPs decreased predators number on faba bean and soybean fields. Results also indicated that SiNPs inhibited faba bean seeds germination percentage and shoot length especially at 425 ppm. All concentrations increased pollen vitality percentage except 300 ppm. Cytological analysis revealed that SiNPs increased mitotic index to achieve 30.05 at 75 ppm. Some types of chromosomal aberration; such as C-metaphase, disturbance, stickness, bridges, laggards and fragments recorded. Moreover SiNPs affected genomic template stability negatively especially at the highest concentration 425 ppm. SiNPs registered alterations in protein expression which report it as toxic nanoparticles