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Updated: May 6, 2026
Determination of Self- and Inter-incompatibility Relationships in Apricot Combining Hand-Pollination, Microscopy and Genetic Analyses
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Dominance relationships among S-alleles in Corylus avellana L
S A Mehlenbacher1, M M Thompson
1Department of Horticulture, Oregon State University, 97331, Corvallis, OR, USA.
Abstract:
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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