Florida wide receiver Kahleil Jackson underwent surgery for a knee injury Friday, with On3 and 247Sports reporting Jackson is out for the rest of the season.Jackson’s father, former Florida star wideout Willie Jackson, told On3 that the surgery was necessary in order for his son to “try to get back next season.”Kahleil Jackson caught one pass for 13 yards for the Gators in their season-opening 41-17 loss to Miami last week.