A selected inbred line (I2) of the progeny of a cross between the varieties 'Polycrossnaja' x 'Bolgar dwarf' was crossed with 'Litovskaja 3.' P87 is an inbred (I6) line derived from that cross.
Developed by
Shilko, T.S.
Reference
Korzun V et al. (1998) A genetic linkage map of rye (Secale cereale L.). Theoretical and Applied Genetics 96:203-208.