EFFECTS OF ELECTRON BEAM TREATMENT IN SOYBEAN GRAINS ARTIFICIALLY INOCULATED BYPHAKOPSORA PACHYRHIZI

摘要

Interactions between plants and pathogenic fungirnhave always been of extreme interest to humanity, sincernthe worldwide economy is built around the purchase andrnsale of species vegetables among countries, who canrnsuffer serious damages by pathogenic organismsrncontamination. Soybean is the most important culture ofrngrains in Brazil, which is the second biggest exporter ofrnthis grain and suffers from the attack of the fungirnPhakopsora pachyrhizi that causes the Asian SoybeanrnRust. The infection for P. pachyrhizi causes fast blackoutrnand the premature fall of leaves, hindering the fullrnformation of them. The technology of irradiationrnprocessing for nutritive purposes is a process that is safernand effective for reducing the microbial load, insectrninfestation, and extending the shelf life of perishablernproducts. This study aims to verify the artificiallyrninoculated soybeans behavior when treated by electronrnbeam from a linear accelerator at different radiationrndoses while observing whether the fungi population wasrnreduced or not. The grains of soybean were irradiated atrnIPEN-CNEN/SP in an electron accelerator of RadiationrnDynamics Inc. USA, 1.5 MeV-25mA at doses 0; 1.0; 2.5;rn5.0; 7.5 and 10.0 kGy.