It may be of some help, to try & study the history of Dahlias & that may help you out somewhat.
It would be a little different, if the parentage were known, on ones you'd selected to use, as your parent plants, for the crosses , with which you intended to make seeds from...
Maybe there is a book, perhaps that would be helpful. Or some articles online. I'm just not so certain, they are very predictable, as to the results you tend to get, from Dahlia, when you grow them from seeds, as I think they often tend to be quite variable. But, that's just my opinion.
I'm not sure there is even any information within the Database, about growing Dahlia from seeds.
It is probably difficult enough, just to even try & get any results, nearly like you might expect, to get, compared to the parent plants you crossed, to produce the seeds.
Unless you are crossing two plants, from within the same flower types, & then you may get something close, to it. In other words, you 'd have to sow quite a number of seeds, to ever get anything nearly worth growing on, or even ever multiplying it.
