"James Fidell" wrote in message
...
Brian wrote:

It is not possible to have a single tree with other than all apple,
all
pear etc. A single tree can, though, have different varieties of the
same
fruit. It was probably this that you read.

Why not, out of interest? IIRC scions of different fruits are grafted
onto the same rootstock, so that shouldn't be the problem. Is there an
incompatability between scions of different fruits?

James
~~~~~~~~~~
Yes~~ there is a very narrow band of compatibility. Apples will only
graft on to apple rootstocks etc.. Pears on pear or Quince. They can be of
any varieties. Quite a few of the 'plum' family will take on the plum type
rootstock so that plum, peach and nectarine would be possible on one
rootstock~~ but would be better alone..
The so-called family tree is usually two or three apples, that have a
similar vigour, on the one root.
Best Wishes Brian.