Field performance of self-compatible and an equal proportion mixture of self-compatible and self-incompatible summer rape lines at two Alberta locations in 1989

Two sporophytic self-incompatibility (SI) alleles were introgressed from Brassica napus rapid cycling material into five self-compatible (SC) lines of oilseed summer rape. The field performance of segregating BC2F2 lines (SC:SI 1:1) was compared with the corresponding SC lines using a split-plot field design. Plants of the SC-SI mixed stands produced, in comparison to plants of the SC plots, more siliques on the main raceme, but the siliques contained fewer seed suggesting that SI plants might not have been fully fertilised. Key words: Rape (summer), sporophytic self-incompatibility