Ohio FG1 and Ohio FG2 were derived from the cross 'ILS301'1 x HS84-6247, which was made in the summer 1987 at Columbus, OH. The parent variety LS301 is a large-seeded variety released by the Iowa Agriculture and Home Economics Experiment Station. The parent line HS84-6247 was derived from 'Zane' 3 x HW79149. The germplasm line HW79149 is a source of phytophthora resistance derived by backcrossing with A72-507 ('Amsoy' x 'Wayne') as recurrent parent.
The F1 and F2 plants from LS301 x HS84-6247 were produced during the winter of 1987-88 at Mayaguez, Puerto Rico. The F2 derived line, HS88-8318, from which both Ohio FG1 and Ohio FG2 were selected, was tested in Ohio from 1988 to 1990. Individual F4 plants from HS88-8318 were harvested in 1989. Two of the resulting F4-derived lines, designated HS90-3508 and HS90-3513, were tested in Ohio from 1991 to 1994. When released, HS90-3508 was named Ohio FG1 ('FG' for 'Food Grade'), and HS90-3513 was named Ohio FG2. Breeder seed of the two varieties was shared with foundation seed organizations in interested states. As a result, Ohio FG1 was released cooperatively between Ohio and Nebraska, and Ohio FG2 between Ohio and Missouri.