I have not checked for roots yet. I don’t wan to mess with the bags for a full month. I’ve just bee looking for bud swell. I kept all of my buds above the medium so I can check them just looking trough the bag.
You are right that there may be several differences between the groups. The first group did not have root radicles, but they are nuts I cold stratified myself and I know they had enough time. The second group all had root radicles. I think the biggest risk is compatibility between Seguinii scions with Dunstan nuts. The other difference between groups is the first group has relatively large nuts with about 1/8th inch scions and the second group has small nuts with larger scions.
It will be a fun experiment whether it works or not. At least one of the first batch has put up a small diameter shoot. It is now an inch and a half tall. I’m presuming that nut has rooted or close to it. That nut had the same amount of cold stratification as the rest, so maybe roots are forming on the others.
I’ll report back as things progress.