Summary
Partial dominance between S-alleles in the stigma was found to be common in 412 plants of Brussels sprouts in which two S-alleles could be detected. Amongst a further 168 plants in which only one S-allele could be detected, 5 plants showed the detected allele to be completely dominant to the other allele present, but further examples are expected. Dominance relationships are given for 34 pairs of S-alleles representing 16 different S-alleles. The most recessive S-alleles in the stigma appear to be S5, S14, S15 and S45, while the most dominant are S23, S29, S35, S36 and S39. The significance of dominance between S-alleles in connection with the breeding system of Brussels sprouts is discussed, and an explanation proposed for the high frequency of S2 based on its unusual dominance behaviour.
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References
Fabig, F. & M. E. Nowak, 1972. Entwicklung eines Testverfahrens für die Bestimmung der Inkompatibilitätskonstitution bei Brassica oleracea L. Arch. Züchtungsforsch. 2: 39–51.
Hal, J. G. van, & W. Verhoeven, 1968. Identification of S-alleles in Brussels sprouts. Proc. Eucarpia Brassica Meeting, 1968, pp. 32–33.
Hal, J. G. van, A. Manger & W. Verhoeven, 1968. Estimation of the level of self-incompatibility. Proc. Eucarpia Brassica Meeting, 1968, pp. 37–38.
Haruta, T., 1962. Studies on the genetics of self- and cross-incompatibilityin cruciferous vegetables. Res. Bull. No. 2 Takii Pl. Breed. Exp. Stn., Kyoto, Japan.
Johnson, A. G., 1971. Factors affecting the degree of self-incompatibility in inbred lines of Brussels sprouts. Euphytica 20: 561–573.
Johnson, A. G., 1972. Problems in breeding and seed production of hybrid sprouts. Comml Grow. No. 4012: 749–750.
Lewis, D., 1960. Genetic control of specificity and activity of the S-antigen in plants. Proc. Roy. Soc. L. 151: 468–477.
Nasrallah, M. E., D. H. Wallace & R. M. Savo, 1972. Genotype, protein, phenotype relationships in self-incompatibility of Brassica. Genet. Res. 20: 151–160.
Nieuwhof, M., 1969. Cole crops. London, Leonard Hill.
Ockendon, D. J., 1974. Distribution of self-incompatibility alleles and breeding structure of openpollinated cultivars of Brussels sprouts. Heredity (in press).
Sampson, D. R., 1957. The genetics of self- and cross-incompatibility in Brassica oleracea. Genetics 42: 253–263.
Thompson, K. F., 1957. Self-incompatibility in marrow-stem kale, Brassica oleracea var. acephala. I. Demonstration of a sporophytic system. J. Genetics 55: 45–60.
Thompson, K. F., 1964. Triple cross hybrid kale. Euphytica 13: 173–177.
Thompson, K. F. & J. P. Taylor, 1966a. Non-linear dominance relationships between S-alleles. Heredity 21: 345–362.
Thompson, K. F. & J. P. Taylor, 1966b. The breakdown of self-incompatibility in cultivars of Brassica oleracea. Heredity 21: 637–648.
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Ockendon, D.J. Dominance relationships between S-alleles in the stigmas of Brussels sprouts (Brassica oleracea var. Gemmifera). Euphytica 24, 165–172 (1975). https://doi.org/10.1007/BF00147181
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DOI: https://doi.org/10.1007/BF00147181