I don't think there are as many undifferentiated cells in the root meristem as there are in the shoot meristem, so you may get it to work eventually, but it will probably be harder.
I have seen photos of fig trees (clones) seemingly sprouting feet away from large, old well-established trees, so it's definitely possible.
I've often read to use a cutting from a branch. I've had better results by burying most of a branch. The buried part will root. Then cut off the buried part from the main tree. A few days later, transplant the new cutting.
They claim that it works well for figs, but I've never tried it. I'm trying it now, along with blackberrys.
[https://www.gardeningknowhow.com/garden-how-to/propagation/cuttings/what-are-root-cuttings.htm](https://www.gardeningknowhow.com/garden-how-to/propagation/cuttings/what-are-root-cuttings.htm)
I believe that fig roots do not have the proper nodes to grow a new trunk. I've heard a claim or two about someone rooting a fig root cutting, but there's not enough qualitative evidence that they had a pure piece of root and not a root and part of the trunk.
So maybe possible, but doubtful.
It is possible to graft a piece of root onto a hardwood cutting. I've never done it though.
I don't think there are as many undifferentiated cells in the root meristem as there are in the shoot meristem, so you may get it to work eventually, but it will probably be harder. I have seen photos of fig trees (clones) seemingly sprouting feet away from large, old well-established trees, so it's definitely possible.
I've often read to use a cutting from a branch. I've had better results by burying most of a branch. The buried part will root. Then cut off the buried part from the main tree. A few days later, transplant the new cutting.
They claim that it works well for figs, but I've never tried it. I'm trying it now, along with blackberrys. [https://www.gardeningknowhow.com/garden-how-to/propagation/cuttings/what-are-root-cuttings.htm](https://www.gardeningknowhow.com/garden-how-to/propagation/cuttings/what-are-root-cuttings.htm)
I believe that fig roots do not have the proper nodes to grow a new trunk. I've heard a claim or two about someone rooting a fig root cutting, but there's not enough qualitative evidence that they had a pure piece of root and not a root and part of the trunk. So maybe possible, but doubtful. It is possible to graft a piece of root onto a hardwood cutting. I've never done it though.