Incompatibility problems in sweet cherry trees on dwarfing rootstocks
2006
Sitarek, M., Research Inst. of Pomology and Floriculture, Skierniewice (Poland)
The problem of incompatibility between rootstock and scion in horticulture has existed ever since grafting and budding were first employed. Some of the fruit tree rootstocks produce a very good junction with top varieties, but with some others the effectiveness of budding is very low. Usually, there are no problems with the growth or cropping of sweet cherry trees on the Mazzard rootstock. In that case, compatibility between the two partners is good. However, this may be different when the rootstock is a hybrid of the Prunus species or a selection of other than P. avium Prunus species. Most of the dwarfing rootstocks for sweet cherry trees are hybrids and because of the likelihood of incompatibility, the introduction of them to practice should be preceded by detailed investigations of the compatibility between the two graft components. Otherwise, neither the nurseryman nor the fruit grower will be satisfied. A review of some publications with the results of studies on the physiological incompatibility between scions and the best known cherry dwarfing rootstocks, as well as hypotheses that try to explain the lack of or reduced compatibility between joined components are presented in the article.
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