How would one cross tomatoes for cold hardiness?
I have zero experience in hybridizing but it sounded like a fun project, I want to cross a tiny tim tomato with a burnley bounty tomato to make a cherry tomato that grows well in the winter time, inside under lights or in a sunny inside position. From what I understand the burnley bounty tomato is about best late tomato available in australia and it produces well into late winter here. How would I go about transferring the cold hardiness of this tomato into the tiny tim plant and how many generations might this take? Is this possible? Might I better spend my time by just growing the tiny tim plant under these colder indoor conditions and just selecting the seeds from the strongest plants generation after generation?