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Dominance relationships between S-alleles in the stigmas of Brussels sprouts (Brassica oleraceavar.Gemmifera)

✍ Scribed by D. J. Ockendon

Book ID: 104641512
Publisher: Springer
Year: 1975
Tongue: English
Weight: 558 KB
Volume: 24
Category: Article
ISSN: 0014-2336
DOI: 10.1007/bf00147181

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✦ Synopsis

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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