I know that pears are grafted to quince rootstock and the apple root
stocks are probably more like a crap apple or something, etc.
I'm just thinking, like always, "what if there is a collapse?" Apples,
pears, plums and peaches would be the things I'd like to graft most.
Maybe it would be to my benefit to plant a rootstock of each so I have
them. I guess also, I could root a sucker coming up on one of the
grafted trees I have.
I've always got Noah syndrome, "two of everything."