Trees have species families whose veins are usually genetically similar enough that, if you rip bark off of saplings of trees from similar enough species and bind the wounds together, they grow into one tree. That's called Frankensteining trees, which is the base test for if species are similar enough to try to hybridize. My class is studying peach tree hybrids right now.

Theoretically, if trees with traits like disease resistance and high fruit bearing density can be crossed successfully, then the results should be able to produce more food for people, especially in regions where people are sorely lacking in other options for nutrition. It could help a lot of people.

[Izuku no, he'll talk botany at you until the sun sets. He wasn't used to having people even smile and nod along at the tree related talk, even though his parents did their best to pretend to be into it.]