The mutant variety AC Ronald was officialy approved in 2000. It was developed by treatment with fast neutrons (11.5 Gy). Treatment of OT184 with fast neutrons produced OT207, a semi-dwarf line with the gene DW-6.
Treatment of OT184 with 11,5 Gy of fast neutrons produced OT207, a semi-dwarf line with the gene DW-6. For OT207, please ref. Brown PD et al, Crop Sci, 20: 303-306