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protozoan wrote:The ability of for example cherry tree to bring fruits how we want. I dont understand what change in a plant if it is grafted.
If I remembre correctly, grafting in orchards plants is a way to provide a strong and ressitant base to a tree selected for the qualities (whatever this would mean for the producer, sadly it is not always the taste...) of its fruits, and not always for its ability to survive. Since plants do not have the same kind of immunity as animals they do not reject the grafted bit, and if the roots are providing the right kind of nutrients the grafted branches will grow on their new base as they would have on the original.
This allow to adapt the graft carrier to the kind of soil you are growing your plants in and to keep producing the fruits you want.
HTH, if I was clear enough
protozoan wrote:Yeah, but what im wondering is how the characteristics (traits) of the graft (that bit not rejected) can pass to the other plant body (if this plant body is grafted by that graft). This graft brings to the tree a new charakteristics (which we want) but why?
The traits do not pass from from the graft to the carrier! The graft is growing as an independant part and the seeds are carrying only the genome of the graft. The carrying part is just kept alive, and if it would grow branches and fruits (which they are usually not allowed to) they would have an offspring that would be completely identical to the carrier.
Is it clearer now?
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