F-1 Hybrid is the term. Cross a tasty tomato with a high-yield one, and you get a tasty high-yield tomato - but you can't use the seeds. This has been around fo

F-1 Hybrid is the term. Cross a tasty tomato with a high-yield one, and you get a tasty high-yield tomato - but you can't use the seeds. This has been around for years.