Here is an article from Smithsonian
http://www.smithsonianmag.com/travel...ant-180955911/
Modern Tomatoes "possess no more than 5 percent of the total genetic variation present within the wild species and primitive varieties. The domestic tomato’s progenitor has the other 95 or more percent. Modern tomatoes may taste good and offer eye appeal, but they lack many genes that allow them to fight disease and survive drought."
Does anyone grow wild tomatoes?