title: Geographic Distribution of Incompatibility Alleles in Cultivars and Selections of European Hazelnut
abstract: The european hazelnut ( Corylus avellana L.) is native to most of Europe and nearby areas in Asia Minor and the Caucasus Mountains. Cross-pollination is enforced by sporophytic incompatibility under the control of a single locus with multiple alleles (haplotypes). Fluorescence microscopy is routinely used to determine if a pollination is compatible or incompatible, and use of an array of known testers allows identification of the alleles of cultivars and selections. Both alleles are expressed in
journal: Journal of the American Society for Horticultural Science