I will make a first statement. non-astreingent hybrid persimmons currently exist, whether PCNA or PVNA. This is a fact.
I am always amused by rough statements. There is not a single Chinese persimmon with a dominant non-astreingent gene. There are several of them and all the descendants are also non-astreingent. I have this guy’s original persimmon in my garden. I have every intention of putting it near several pollinator hybrids like Universal, Nikita’s daughter, Rosseyanka’s male mutation (who is a true original F1 as well) … to see what will come out of it.
When to taste … there is something for everyone. And who has said that this fruit is not good.
All the descendants are of excellent quality.
As for statistics, it no longer makes sense in our time. In Russia, the gene for resistance to cold has been located and it is integrated into the embryo.
In Japan the non-astreingent gene has been located to easily create new PCNA varieties or eliminate the young before waiting for fruit. There are no more statistics but genetic engineering. The basic problem with PCNA varieties is degradation of genetic material. To remedy this, they resorted to this famous Chinese persimmon PCNA. China and Japan are now protecting their varieties and this persimmon is particularly protected. It is much easier to find a persimmon in Russia than this Chinese PCNA persimmon with a dominant non-astreingent gene.