Cross pollination is accomplished by flowers, roots or stem of specimen supposedly being male will have no affect on fertilization of the flowers produced by the variety grafted on top.

Plants producing only male flowers do not fruit. In those instances where individual plants are referred to as male and female it is because their flowers produce only pollen or fruits.

For best targeted information try searching the web for "persimmon pollination" or maybe even "kaki pollination".

Thank you for your clear response, regarding this one " " roots or stem of specimen supposedly being male will have no affect on
fertilization of the flowers produced by the variety grafted on top." means ;-) what the seller told me about the grafting does not make the tree hermaphrodite, but the top will be female and produce fruit? but without seeds?