The variations reported to have been due to grafting are almost endless. Season, shape, color, taste, growth, and almost every quality possessed by tree fruit is alleged to have been changed in some degree. Yet trees are planted each year, propagated by the usual methods, and the expected results are obtained.
Definite experiments carried on by scientific men as to the effect of the stock on the scion have not shown that there is any perceptible differences in tree or fruit, but more thorough study should be undertaken along this line in the future. Of the effect of the scion on the stock very few concern themselves, for it is of no practical importance. There is, however, some definite relation between certain stocks and scions. This is particularly noticeable when a scion will not readily unite with the stock, or vice versa. Enough experiments along this line have not been made to enable us to state the relation of a particular stock to a particular scion, and further study is needed before practical advice can be given.