Garlic samples showing symptoms of Onion Yellow Dwarf Virus (OYDV) were obtained from previous study and tested by indirect-enzyme linked immunosorbent assay (I-ELISA), transmitted to _Chenopodium amaranticolor _and then confirmed by immunosorbent electron microscopy (ISEM) for the presence of OYDV. PCR primers were used to amplify about 1.1 kb fragment from the viral genome using RT-PCR from infected garlic plants, ... إقراء المزيد