Diallelic self-incompatibility is the main determinant of fertilization patterns in olive orchards.

ABSTRACT: Self-incompatibility (SI) in flowering plants potentially represents a major obstacle for sexual reproduction, especially when the number of S-alleles is low. The situation is extreme in the commercially important olive tree, where in vitro pollination assays suggested the existence of a diallelic SI (DSI) system involving only two groups (G1 and G2). Varieties belonging to the same SI group cannot fertilize each other, such that successful fruit production is predicted to require pollination between varieties of different groups. To test this prediction, we explored the extent to which the DSI system determines fertilization patterns under field conditions. One hundred and seventeen olive cultivars were first genotyped using 10 highly polymorphic dinucleotide Simple Sequence Repeat (SSR)

SUBMITTER: Mariotti R 

PROVIDER: S-EPMC8061272 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature