We have a lemon tree (not Meyer, which I would love) that we were given when DH's brother was moving. It has some kind of parasitic plant that comes up off the roots (I don't remember the name, but I think that was one of my first posts on this site!).
The plant is pot-bound, stays indoors year-round, only gets light when we open the shades (in winter we only open them when there is solar gain to be had), gets overwatered regularly, and still, it is hanging with so many lemons! It is some kind of large variety, almost grapefruit sized.
It is below zero this morning, but sunny, so the shades will be coming up. I'll see if I can get a decent photo.....