I think you are pretty close there Leebros.
The studies I've been reading of late (inturrepted working on a project for my customers), and I'm still just a bit over halfway done, suggests that geographically isolated populations of ginseng tend to develop a very slightly different genetic fingerprint. And, there does seem to be a unique genetic marker in some wild populations. The US Fish & Wildlife folks are currently conducting some studies to see if they can differentiate cultivated from wild root through a test.
Now, that said, ginseng is like every other plant in that genetic diversity is not necessarily detrimental. In fact, most of the studies seem to take the position that genetic diversity is necessary for species survival. Ginseng, like other plants, show some \"hybrid vigor\" in their f1 crosses, but negative traits could also be passed on. The question then becomes if the unique marker discovered in some populations of wild ginseng justify forcing those populations to remain isolated, and indeed does it justify the prohibition or depression of planting efforts which could dilute that one genetic marker? In other words, does one genetic marker -which to my knowledge at this point has no beneficial purpose other than academic and as an identifier- warrant less planting of readily (relatively speaking) available seed from other populations of the same species? I'm leaning to suggest it does not. We have national and state parks and preserves where collecting ginseng is prohibited now. These are the places to preserve this genetic marker in those populations where it exists for further research. I would also argue that planting seed -any viable ginseng seed- is better than planting none. I know that the cultivated seed I sell and plant turns into some of the wildest stuff I've seen if given time and any form of growth enhancement is avoided.
On a seperate note, I did read one study by Furedi and McGraw (2004), which looked at the role deer play in ginseng seed dispersal. Of all the ginseng seeds eaten by deer, none survived the trip through the deer's digestive system. Combining this fact and the unanticipated high browse rate by the deer in the study, and the authors have labeled white-tailed deer as ginseng preditors...not dispursors.
Another interesting tidbit I've picked up but have been so far unable to locate the documentation, is that the 'wild' ginseng being studied in Ohio which has been genetically tested, shared genetic traits/markers with ginseng from Wisconsin cultivated strains. I understand that this is true for Pennsylvania also. Now, this suggests one of two possibilities. First, that the seemingly wild ginseng growing in Ohio was planted decades ago from seed obtained from the commercial ginseng population in Wisconsin. The second possibility, is that the seed which started the cultivated fields in Wisconsin came from wild plants in Ohio.