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Molecular estimates of similarity in Eucalyptus globulus

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dc.contributor.authorRibeiro, M.M.A.
dc.contributor.authorSánchez, Leopoldo
dc.contributor.authorRibeiro, C.
dc.contributor.authorCarocha, V.
dc.contributor.authorAraújo, J.A.
dc.contributor.authorBorralho, Nuno
dc.contributor.authorMarques, Cristina M.
dc.date.accessioned2011-05-27T17:02:37Z
dc.date.available2011-05-27T17:02:37Z
dc.date.issued2004
dc.description.abstractThe base populations used in most forest tree genetic improvement programs usually lack detailed pedigree information. Molecular markers, such as microsatellites (SSR), can be used to estimate individuals’ pairwise relatedness, which is based on the probabilities’ ratios of the identity in state between the individuals compared and the reference unrelated population These estimates can be very useful to infer the level of relationship among sub-populations of elite material and/or for the design of controlled crosses between putatively unrelated parents. Using 113 putatively unrelated individuals - genotyped with 18 SSR - self, full-sib, half-sib and unrelated were simulated, and four pairwise similarity coefficients were tested: Queller & Goodnight 1989; Li et al. 1993; Ritland 1996, and Lynch & Ritland 1999. The Lynch & Ritland (1999) coefficient was selected (Figure 1), for it displayed a better adjustment with the expected level of relatedness and narrower standard errors (SE). SE were calculated through Monte- Carlo techniques, to avoid unequal sample size bias, by using 105 simulations for each relatedness group. To illustrate the usefulness of molecular estimates of similarity in genetic improvement programs, a clustering (UPGMA) based on the pairwise Lynch & Ritland (1999) coefficient (LR) values was performed to infer about the putative relationship among individuals of the subgroups of E. globulus elite individuals. From that analysis at least two pairs might be related and a PCA analysis confirmed the clustering results.por
dc.identifier.citationRIBEIRO, M.M.A. [et al.] (2004) - Molecular estimates of similarity in Eucalyptus globulus. In IUFRO Conference, Aveiro, 11-15 de Outubro - Proceedings: Eucalyptus in a changing world. Poster.por
dc.identifier.urihttp://hdl.handle.net/10400.11/679
dc.language.isoengpor
dc.peerreviewedyespor
dc.subjectEucalyptus globuluspor
dc.titleMolecular estimates of similarity in Eucalyptus globuluspor
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceAveiropor
oaire.citation.titleIUFRO Conference : Eucalyptus in a Changing Worldpor
person.familyNameRibeiro
person.givenNameMaria Margarida
person.identifier349097
person.identifier.ciencia-idAD12-4D32-7A48
person.identifier.orcid0000-0003-4684-1262
person.identifier.ridM-4235-2013
person.identifier.scopus-author-id7201715611
rcaap.rightsopenAccesspor
rcaap.typeconferenceObjectpor
relation.isAuthorOfPublicationf5b33ec3-9c90-4cc9-b0c4-c86c7ec0b017
relation.isAuthorOfPublication.latestForDiscoveryf5b33ec3-9c90-4cc9-b0c4-c86c7ec0b017

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