About 2 years ago I bought an apple tree, and I was wondering what other fruit I could graft it with, they advised me to use a pear tree belonging to the same family (or even a peach tree). I would like to see the tree with mixed pink and white bloom, I've been looking for a list of fruit trees compatible with the apple tree for a while, but I can't find it, would you be kind enough to indicate which tree is the most suitable? I take this opportunity to remove a doubt and also ask, if possible, what determines the formation of a hybrid with both parental characteristics (such as the orange tree), is it a discourse of codominance, incomplete dominance or something else? What can I do to get a hybrid instead of the co-presence of both parent species? Thank you so much for your kind attention
most of the fruit plants that are grown in the family orchard are pink, so theoretically all the plants could be grafted together, so in theory you could graft a peach on your apple tree, so as to obtain a branch that produces peaches, and one that produces apples, which, on the other hand, ripen at different times, and therefore you can have a fruiting that lasts over time.
It is not said that all grafts take root and are therefore successful.
Hybrid fruit plants are usually grafted on very vigorous varieties, or particularly resistant in adverse climatic or soil conditions, in order to obtain better fruits, or that ripen earlier, or plants that develop and fruit even in conditions that are not favorable to their development . In general, hybrid varieties are grafted onto plants obtained from seeds, the fruits of which would be of no value; there is therefore a tendency to graft apple trees on apple trees, peach trees on peach trees, etc. only the pear trees are often grafted onto the quinces, which seem to give the plants greater fruiting and vigor.
To be more successful, you could try grafting two different apple varieties on the same rootstock.
However, consider that your apple tree is already almost certainly the result of a graft, and therefore it would be advisable to graft the new plants on the rootstock, and not on the branches already grafted.
The issue of hybrids is different: a hybrid and a grafted plant do not have much in common.
As we said before, plants with particularly interesting fruits are grafted onto a seed plant, these plants are all hybrid, i.e. obtained by crossing different species of the same plant, and therefore if obtained from seed they would not produce with certainty fruits identical to those of the plant that produced the seeds.
Hybrids are not obtained by grafting, but by cross-pollination, and consequent sowing of the seeds contained in the fruits obtained, and subsequent cultivation of these seed plants.
In general, when a plant with particularly interesting fruits is obtained by hybridization, it is then propagated by grafting, so as to certainly have fruits identical to those of the mother plant.
It is not easy to obtain hybrid varieties that enclose the characteristics of two different fruits, as the fruit plants cultivated today are all hybrids, obtained by crossing other hybrid plants, therefore it is not easy to understand the relationships of each single plant, and it becomes difficult to cross the plants further.
In addition to this, cross-pollination with fruit plants does not always take place, that is, it is easy to obtain seeds by pollinating two different types of cherry, while seeds are not obtained by pollinating the flowers of a cherry with pollen from a peach tree, as these two plants, although both belonging to the genus prunus, have been cultivated so much over the millennia, that their relationship has diluted over time, so much so that they become very different.
As for citrus fruits, the question is different, as these plants tend to hybridize naturally, without human intervention, therefore most of the citrus species we grow, in reality they are naturally created hybrids, such as lemon and l 'Orange.