I think if we start aguing about the differences between UK and USA pronunciations we will get no-where. Obviously being English I say to-mah-to but I wouldn't expect an American to. I notice above that someone spelt a singular tomato as tomatoe .. I seem to remember a certain vice-president doing something like that with "potatoe" and ending up with egg on his face. A passion-fruit is something completely different anyway ... I think you are getting mixed up with love-apple which is another name for a tomato.