Summary
The breeding system of a very uniform open-pollinated cultivar of cabbage, Avon Coronet, was studied by determining S-genotype frequencies. In a sample of 52 plants, 24 were S2.2, 26 were S2.7 and 2 were S7.7. S2.7 plants were moderately self-compatible, but S2.2 and S7.7 plants were fairly highly self-incompatible. As males, S2.7 plants were fully compatible with S2.2, but as females were fairly incompatible. From an analysis of five single plant progenies it was concluded that S2.2 plants produce seed by crossing, while S2.7 plants both cross and self, with about 30 per cent selfing. The breeding system of Avon Coronet appears to be very stable and is unlikely to be altered by further selection for agronomic quality.
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Ockendon, D., Currah, L. Breeding structure of a highly selected cultivar of cabbage (Brassica oleracea var. Capitata). Heredity 42, 373–379 (1979). https://doi.org/10.1038/hdy.1979.40
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DOI: https://doi.org/10.1038/hdy.1979.40
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