D. kaki grafting on D. malabarica (or other tropical Diospyros spp) is interesting research idea.
Of course not 100% but some chance there is.
Main issue is:
what part of plant come to dormancy at first, root system or branches?
If variant 1 is coreect, we have the chance.
Also interesting to hybridizate/crosspolinate tropical and subtropical Diospyros spp.
Tropical Diospyros spp are often deprived of attention because its fruit astringency and small size.
Both problem can be resolved by domestication, breeding and polyploidization
if you have 15-20 years...
