Isolation were made from original seed stocks of different lines of Hungarian vetch (Vicia pannonica Crantz) to determine seedborne fungi. The seed coat, cotyledon and embryo were cultured and the fungi were determined. Newly harvested seeds obtained from the plants grown in the field, after sowing of the original seed stocks, were examined in the similar manner and the variations of incidence of fungi on different seed parts were evaluated. The transmission of the determined fungi on original seed stocks to the plant roots was also investigated in both sterile and field soil. Aspergillus niger v. Tieghem was found at the high rates in all parts of original seed samples and in roots of the plants that developed from these seeds in sterile and field soil, differing to the lines. This fungus was re-established to the newly harvested seeds after vegetation period, however its incidence in the tissues decreased at high rates in the most of lines. Aspergillus alutaceaus Berk. and Curt was determined in the original seed stocks of some lines, but was not transmitted from seeds to the roots or newly harvested seeds. Alternaria alternata (Fr.) Keissler appeared in only newly harvested seeds from the some lines was probably airborne. F. culmorus (W.G.Sm) Sacc., F. equiseti (Corda) Sacc. and Fusarium oxysporum Schlecht appeared in the roots of the plants grown in sterile or field soil could not develop on original seeds. All data in this study were recorded for the first time in Hungarian vetch.