I have recently researched some information on grafting, and they have found that when grafting tree, the cells from one tree did indeed travel a greater distance than they had previously thought into the other variety of tree. It would seem to me that this would happen even more easily with a fast growing vine like a tomato. So maybe it is possible that grafting does contibute subtle changes to plant genetics? I will try to dig up the source of this if I have time.
__________________
Mike
|