Secale sylvestre is a wild relative of rye (S.

[1] Secale sylvestre is useful for wheat breeding.

[1] This includes disease resistance breeding.

[1] Secale sylvestre is the source of PmSESY, a disease resistance gene for wheat powdery mildew.

[1] He et al., 2021 use genetic mapping to locate PmSESY on the 1RL chromosome.