Update on my dugged up dwarf apple large root cutting experiment

A few weeks ago I dugged up a large root from an old dwarf Red Fuji apple from Starkbros. I buried the large root and grafted a Rubinette Scion onto it. 2 weeks later the Scion still green but the large root now sent up many shoots for stooling Dwarfing rootstocks. It will be so cool if the graft takes also.