It is my understanding that Antonovka apple grows "true" from seed. It's long been used a rootstock for grafting
as it withstands -50 below winters. It also sets a tasty yellow apple. Other "true" (or true-ish) apples I have found are
"Dolgo" crabapple, Fameuse a.k.a. Snow apple, and "Nickajack" (from North Carolina)
