I had to lift a large root recently due to being surrounded by grass roots at the top which were impossible to get out, the tap root was very thick and long with several branched thick roots towards the top with crowns, much like several plants on one. You could try to remove one of the top branched crowns with as much root as possible, it should grow but I'm not sure how well.
If you grow a few different hybrids you can get an occasional exceptional plant, mine have crossed and set about with some very nice flowers. Often the original has disappeared but many self sets hang around.
