Fresca strawberry history

What's the origin, and history, of the Fresca strawberry? I'm very curious about it (and also Tresca), since some people claim that it's a garden strawberry, traditionally grown from seed (Fragaria × ananassa), as opposed to an alpine-type (Frageria vesca), although at least one vendor claims that Fresca is Frageria vesca.

Anyway, Fragaria × ananassa is said to be octoploid, while Frageria vesca is said to be diploid. So, if Fresca is a regular garden strawberry, it must have taken a fascinating process to stabilize it (unless it's not stable). If it's just a large-fruited alpine type, then stabilizing it should have been as easy as stabilizing a tomato.

So, here are my ideas as to how they bred it:

1. It's neither Fragaria vesca nor Fragaria x ananassa, but some other kind of strawberry hybrid (probably a diploid one).
2. It's a very different sort of Fragaria vesca.
3. They altered a regular garden strawberry to change it so it only had one set of chromosomes, and then doubled its chromosomes (potentially multiple times).
4. They stabilized an octoploid.
5. It's not stable, but the traits are desirable enough to make it marketable anyway.
6. It's its own species altogether (and not a hybrid).


So, where does Fresca originate? When did it originate? Who bred it? How?

I read that Tresca comes from Poland (not sure about Fresca).

Has anyone actually grown Fresca, here? If so, did it keep fruiting for more than just a few years, or did it stop like regular strawberries do?

I'm growing Fresca and Tresca now (I've got seedlings, which I plan to grow indoors until the fall, spring, or so). So, if you don't know, hopefully we'll find out.

I understand anyone with the right kind of microscope can just look at a proper sample and count to see whether it's an octoploid or not. Has anyone here ever tried to do that sort of thing? That would be pretty cool to be able to know with certainty about any plant.