Inoculation of a pear on a mountain ash

[Forester]

Hi guys. This spring I tried to grafting a pear on an ordinary mountain ash, and I think that it turned out successfully. I looked for information on interspecific grafting and found out that Mespilus germanica can be inoculation in mountain ash. Can someone confirm this? How successful will the grafting be?

[shiro]

Indeed the rowan tree is sometimes used as rootstock for the pear tree.
Now I'm going to give you the results on the inter-gender grafting.

Pear can be grafted on pyrus, cydonia, crataegus, mespilus germanica, sorbus.

Strangely sorbopyrus tatarka can be grafted on crataegus monogyna, pyrus, mespilus germanica and pyrus with the best vigour on mespilus germanica.

Sorbaronia can be grafted on crataegus monogyna allowing the aronia a good vigour on crataegus monogyna.
It can also be grafted visibly on pyrus with a rather weak vigour (graft of this year) and on mespilus the graft takes but it does not grow. An incompatibility is very probable.

The malosorbus florentina (graft realized this year), according to my tests, can be grafted on crataegus monogyna (low vigour), on apple tree (royal gala for the test) and on sorbopyrus tatarka.


For sorbus domestica it is difficult to say since it is the only one I used.
Result : the grafting is not very encouraging on the following species:
Pyrus, mespilus germanica, crataegus monogyna, sorbopyrus tatarka, sorbaronia,...
The graft remains alive but does not grow at all.

Then you have to see what happens with the other sorbus.
In general the sorbus used for grafting pear trees is sorbus aucuparia.

I would say in the end that sorbus aria has a better chance to succeed in grafting on mespilus germanica than others, but this is just a hypothesis.

I advise against grafting sorbus domestica on mespilus germanica this combination is not good.

[Forester]

Thanks shiro,this is very useful information.