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Dominance relationships among S-alleles inCorylus avellanaL.

✍ Scribed by S. A. Mehlenbacher; M. M. Thompson

Book ID
104714317
Publisher
Springer
Year
1988
Tongue
English
Weight
317 KB
Volume
76
Category
Article
ISSN
0040-5752

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✦ Synopsis

Pollen-stigma compatibility relationship were studied in 50 cultivars and more than 800 seedlings of the European hazelnut (Corylus avellana L.). A total of 22 unique S-alleles have been identified. Dominance relationships in 75 of the possible 231 pairs of alleles have been determined in both pistil and pollen. In the pistil, all alleles exhibited independent action, whereas in the pollen, alleles exhibited either dominance or codominance. The dominance relationship was linear with 7 levels of dominance.

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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 a