Rootstock for Peach in places where It rain a lot

General Fruit Growing
2

Adara and Monrepos are good roots for some peaches in Spain. Adara (Puente) Plum - Fruit tree, rootstock & interstem you should be able to find this in your country.
https://journals.ashs.org/hortsci/abstract/journals/hortsci/46/2/article-p322.xml