Mutation breeding, mutagenesis, or Atomic Gardening. You take a radiation source, grow plants around it, and breed the ones with interesting mutations. Ruby Red

Mutation breeding, mutagenesis, or Atomic Gardening. You take a radiation source, grow plants around it, and breed the ones with interesting mutations. Ruby Red Grapefruit was bred this way exposing either the plants or seeds to radiation from a Cobalt-60 source. I believe there was also a process that involved exposure to chemicals that would cause DNA damage and induce mutations as well, but I don't know how successful it was. https://geneticliteracyproject.org/2016/06/13/pasta-ruby-grapefruits-why-organic-devotees-love-foods-mutated-by-radiation-and-chemicals/ https://geneticliteracyproject.org/2016/06/13/pasta-ruby-gra... https://unbelievable-facts.com/2017/08/atomic-gardening.html https://unbelievable-facts.com/2017/08/atomic-gardening.html