So here is something that I figured out. I found a strain that is available locally that has Durban Poison twice in it's Lineage.
here is my diagram
DP = Durban Poison
GSCX = Girl Scout Cookies Extreme
GDP = Grand Daddy Purple.
Just so happens I have a lab label for Cobbler from a local dispensary and they do not list THCV. So they probably didn't test for it.
They also sell OG Kush here locally and it is decent high in CBDA 9.9% and .04% CBD
I think @Sl1 has a test lab that can test MJ. if they can do it off a small enough sample, I'd be willing to have them test some that I have.
In theory I would also say that