A few weeks ago DD and I did a raid on local plant nurseries. Among my purchases were a couple of largish cucumber plants. Despite having packed them very carefully in the car, when I got home one of them had broken stem near the base of the plant.
There was a wee bit of connecting stem still attached so I carefully sliced the two ends together with some very sticky tape and planted it in the greenhouse in the hope that it might regenerate. It's now growing away well, nearly as large as the one that didn't get damaged and has flowers which will soon become cucumbers 
I was so cross when I found it damaged, but now I'm delighted that my 'mending' has worked.