I know that grapevines can be propagated using hardwood cuttings, softwood cuttings, and even single buds with the right equipment.
I was wondering if I could do the same using root cuttings in order to propagate the rootstock.
That is, cut a few strong roots and bury them exposing the part that was closest to the leaves.
I've found some anecdotal reports of grapevines growing back from roots but they were mostly interested in killing the plant rather than helping it.
Is it possible to propagate grapevines this way?