What's the easiest way to introduce mutations into sunflower seeds?

Question

google search so far points to x-rays as a mutation source. anything easier?

Answer 1

Use genetically engineered Agrobacterium.  Inject it at the base of the plant.  It will create a gall.  As the bacteria infects the plant, it will start mutations.

Answer 2

Some chemical exposure will do the same thing, but it usually kills the seeds.  

Answer 3

Cross polinate with different bee species...

Answer 4

mutation...this is sunflower.......

sunflower...this is mutation

Answer 5

Irradiate the seeds with a prolonged low level x-ray or gamma ray radiation. If the radiation does not kill the germ the seed will produce a mutant sunflower.

Answer 6

UV will do the job, too. Or you can soak them in nicotine extract for a while. Any carcinogen substance can cause a mutation (that is what cancer cells are, mutated cells that can't stop replicating).