Breeding behaviour of mutant characters in five true breeding gamma-ray induced mutants of a tall aromatic rice cultivar Gobindabhog was studied in crosses of mutants among themselves and with their mother cultivar Gobindabhog. Wide range of variation was observed in crosses of Mutant x Mutant than in Mutant X Parent. Height mutations were independent of panicle mutations. Mutations for high panicle density, less test weight and gold hull colour in one mutant was independent of each other. Awn was found to appear in some segregants in one Mutant X Mutant cross where none of the cross-parents including mother cultivar Gobindabhog had awned grain.