Posted: 25/09/2012 at 16:01
Any fruit that produces ethylene gas is claimed to hasten the ripening of a tomato. As I've said, I've found no evidence that it does. Toms produce their own. Most fruits do. It's the hormone that causes ripening.
Temperature controls ripening. A tom inside on a bench in a room at 18C will ripen quicker than a tom outside on a plant at 13C.
If you're at the stage where fruit is starting to ripen on a plant, the foliage becomes less important. By maturity time, the actual plant's job is done.