A southern ripening disorder that somewhat matches your description is the result of sweet potato whitefly (Bemisia tabaci) or silverleaf whitefly (B. argentifolii), Dr. Scott says. The whiteflies introduce a toxin into the fruit that causes irregular ripening. Parts of the skin do not ripen and remain yellow to white, while the inside of the fruit has severe white tissue formation. Sometimes the exterior discoloration disappears but there can still be a lot of white tissue inside, Dr. Scott explains.
Protect this summer's crop by covering all your bases. Use sticky traps to capture whiteflies, fertilize regularly to maintain soil potassium levels, and keep your fingers crossed for good weather.