S. Martins, M. Rovira, A.P. Silva, V. Carnide
Self-incompatibility is a mechanism that prevents self-fertilization and encourages fertilization by genetically unrelated individuals. The control of self-incompatibility is generally attributed to a single S-locus expressing multiple alleles. In hazelnut incompatibility is determined sporophytically and it is controlled by a single locus with multiple alleles. The allelic forms of six Portuguese hazelnut landraces were studied. The landraces were selected from the Viseu and Moimenta da Beira regions. Fifteen pollen testers, with known S-alleles, were used to determine the incompatibility alleles. All landraces showed compatibility for S1, S7, S9, S10, S12, S14, S16, S18, S26, S27, S29, and S30 alleles, thus, these landraces have not these alleles in their genotype. Five landraces revealed incompatibility for one of the fifteen alleles evaluated. Three landraces, all from Viseu, revealed incompatibility for the S2 allele, which means that they have the S2 allele in their genotype.
Martins, S., Rovira, M., Silva, A.P. and Carnide, V. (2012). POLLEN INCOMPATIBILITY IN PORTUGUESE HAZELNUT LANDRACES. Acta Hortic. 932, 149-154
DOI: 10.17660/ActaHortic.2012.932.22
S-alleles, Corylus avellana L., germplasm

Acta Horticulturae