There are lots of hybrids out there, but only a few crops are actual GMOs. Hybrids are the result of 2 varieties within the same species crossing (sort of like a labradoodle), and can happen naturally very easily. GMOs are the result of genes from one species being inserted into a completely different species. With the dog analogy, it would be more like a pittbull with squid tentacles.
Most likely, what he has are hybrids.
Well I know a bit now of what the difference is. I suspect they are likely hybrids, just as you mentioned. But I am going to look further on my next visit. Thank you for responding.