| Symbol | Pm4b |
| Name | Reaction to Erysiphe graminis DC. |
| Synonym | Mle[3599] |
| Local | 2AL[3599] |
| Linkage | |
| Origin | T.carthlicum[1940] |
| Tester | Achill,Ajax,Arkas,Armada,Facta,Fakon,Fazit,Hermes,Horizont,Maris-Halberd,Max,Olymp,Orbis,Ronos,Weihenstephan-M1,Atlantis,Boheme,Rena,RE-714[3599]. |