@article{fdi:010077855,
  title = {{P}aternity tests support a diallelic self-incompatibility system in a wild olive ({O}lea europaea subsp. laperrinei, {O}leaceae)},
  author = {{B}esnard, {G}. and {C}heptou, {P}. {O}. and {D}ebbaoui, {M}. and {L}afont, {P}. and {H}ugueny, {B}ernard and {D}upin, {J}. and {B}aali-{C}herif, {D}.},
  editor = {},
  language = {{ENG}},
  abstract = {{S}elf-incompatibility ({SI}) is the main mechanism that favors outcrossing in plants. {B}y limiting compatible matings, {SI} interferes in fruit production and breeding of new cultivars. {I}n the {O}leeae tribe ({O}leaceae), an unusual diallelic {SI} system ({DSI}) has been proposed for three distantly related species including the olive ({O}lea europaea), but empirical evidence has remained controversial for this latter. {T}he olive domestication is a complex process with multiple origins. {A}s a consequence, the mixing of {S}-alleles from two distinct taxa, the possible artificial selection of self-compatible mutants and the large phenological variation of blooming may constitute obstacles for deciphering {SI} in olive. {H}ere, we investigate cross-genotype compatibilities in the {S}aharan wild olive ({O}. e. subsp. laperrinei). {A}s this taxon was geographically isolated for thousands of years, {SI} should not be affected by human selection. {A} population of 37 mature individuals maintained in a collection was investigated. {S}everal embryos per mother were genotyped with microsatellites in order to identify compatible fathers that contributed to fertilization. {W}hile the pollination was limited by distance inside the collection, our results strongly support the {DSI} hypothesis, and all individuals were assigned to two incompatibility groups ({G}1 and {G}2). {N}o self-fertilization was observed in our conditions. {I}n contrast, crosses between full or half siblings were frequent (ca. 45%), which is likely due to a nonrandom assortment of related trees in the collection. {F}inally, implications of our results for orchard management and the conservation of olive genetic resources are discussed.},
  keywords = {diallelic self-incompatibility system ; microsatellites ; {O}lea europaea {L} ; {O}leaceae ; paternity},
  booktitle = {},
  journal = {{E}cology and {E}volution},
  volume = {10},
  numero = {4},
  pages = {1876--1888},
  ISSN = {2045-7758},
  year = {2020},
  DOI = {10.1002/ece3.5993},
  URL = {https://www.documentation.ird.fr/hor/fdi:010077855},
}