How and where were fruit trees we have today such as cherries and apples developed for agriculture?can be found in chappter : how to make an almond in guns germs and steel by jared diamond
There is an answer of sorts to this question on pp. 124-5 of my copy of the book. It does not, however, tell you where these two trees were actually domesticated.
According to Diamond, these trees and a few others were among the last to be domesticated. This happened, in his words, "around classical times." This means around the times of the Greeks or Romans. But he does not say where in the world the development was accomplished.
He does mention that the technique needed to cultivate these plants was developed in China. These trees need to be grafted in order to be agriculturally useful. So they were developed for agriculture by people who experimented with grafting them. But we are not specifically told if the Chinese did this to apples and cherries or if someone else used this Chinese technique somewhere else in the world.