Grafting: reasons for incompatibility?

[Bernd Hardeweg]

Does anyone have any hypothesis about physiological reasons for
incompatibility between rootstock and graft in fruit tree growing?

Why do e.g. combinations with dwarfing cherry rootstocks often die
after several years of normal growth?

thanks
Bernd Hardeweg
Bernd Hardeweg

email: Bernd.Hardeweg at stud.uni-hannover.de
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