Your appeal is a bit difficult to follow, but a good place to start researching any questions you might have is right here. use the search engine & it will reveal lots of strings that may well answer your question. Just no replacement for a little research!
In a attempt to put together your thought patterns on this one, I'd say you are asking about what grows well as a single cola plant & yields a tremendous amount. Well, probably nothing, but there are strains that react well to packing many in a small space & training for a SOG or ScrOG.
Sucking a thousand grams out of a thousand Watt light, just doesn't seem like a feasible number, to me. I'm all for it, but reality tells me it's not even a remote possibility. Look for more believable numbers when choosing a strain. Numbers like 350grams/m2, (that's 3' X 3') will be more along the lines of what you can expect in the way of yields, provided all conditions for optimum growth are met by you, as the farmer.
