"Michael Bell" wrote in message
Thinking about the problems of apple breeders.

The breeder selects the apples he likes, (eats them, I hope) sows the
pips and grows them. It would take some years for the seedlings to
grow into fruiting trees. The way round this would seem to be to cut
the seedlings and graft them onto the branches of a root-stock tree.
Then you might hope to get the next generation a lot quicker. But such
grafting will be a very fiddly job on stems much thinner than most
grafts. How is it done?

I assume it would be by bud grafting rather than by using scions.