Pollen contamination and nonrandom mating in a Eucalyptus camaldulensis Dehnh seedling seed orchard

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dc.contributor.authorGonzaga, J. M. S. [UNESP]
dc.contributor.authorManoel, R. O. [UNESP]
dc.contributor.authorSousa, A. C. B.
dc.contributor.authorSouza, A. P.
dc.contributor.authorMoraes, M. L. T. [UNESP]
dc.contributor.authorFreitas, M. L. M.
dc.contributor.authorSebbenn, A. M.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Fed Paraiba
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.contributor.institutionInst Florestal Sao Paulo
dc.date.accessioned2018-11-26T15:44:47Z
dc.date.available2018-11-26T15:44:47Z
dc.date.issued2016-12-01
dc.description.abstractEucalyptus camaldulensis has potential for timber, energy, pulp and cellulose production in Brazil due to its ability to adapt to a variety of environmental conditions. The use of improved seeds, selected for economic growth traits, is necessary to increase productivity of commercial stands. Seed seedlings orchards (SSO) are one option for improved seed production. However, pollen contamination from unimproved populations, as well as non-random mating in the SSO, can decrease the predicted genetic gains in selected populations. Thus, we investigate the mating system, pollen flow and dispersal patterns in an E. camaldulensis SSO and progeny test (PT), established with seedlings collected in the SSO, using seven microsatellite loci. All trees in the SSO were mapped, sampled, and genotyped. For the PT, we sampled, genotyped, and measured the total height of seedlings from 25 families. We detected 10 % inbreeding in the PT, resulting mainly from selfing. Furthermore, we found a correlated mating rate of 18.5 % in the SSO, indicating that within the PT there are some full-sibs. Using paternity analysis, we found 14.7 % pollen contamination and a pattern of pollen dispersal between near neighbor trees in the SSO. We found 9.5 % of inbreeding depression for seedlings height. Due to pollen contamination and non-random mating in the SSO, the actual genetic gains for growth traits in the PT are probably lower than the predicted genetic gains. We discuss some management strategies in the SSO that can be used to increase genetic gains in commercial reforestation established using seeds collected from the SSO.en
dc.description.affiliationUNESP, Fac Engn Ilha Solteira, BR-15385000 Ilha Solteira, SP, Brazil
dc.description.affiliationUniv Fed Paraiba, Ctr Biotecnol, BR-58051900 Joao Pessoa, Paraiba, Brazil
dc.description.affiliationUniv Estadual Campinas, Ctr Biol Mol & Engn Genet, BR-13083970 Sao Paulo, Brazil
dc.description.affiliationInst Florestal Sao Paulo, BR-01059970 Sao Paulo, SP, Brazil
dc.description.affiliationUnespUNESP, Fac Engn Ilha Solteira, BR-15385000 Ilha Solteira, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdFAPESP: FAPESP 05/58721-9
dc.description.sponsorshipIdFAPESP: 05/59217-2
dc.format.extent1-11
dc.identifierhttp://dx.doi.org/10.1515/sg-2016-0001
dc.identifier.citationSilvae Genetica. Braunschweig: Johann Heinrich Von Thunen Inst-vti, v. 65, n. 1, p. 1-11, 2016.
dc.identifier.doi10.1515/sg-2016-0001
dc.identifier.issn0037-5349
dc.identifier.urihttp://hdl.handle.net/11449/159650
dc.identifier.wosWOS:000406712600001
dc.language.isoeng
dc.publisherJohann Heinrich Von Thunen Inst-vti
dc.relation.ispartofSilvae Genetica
dc.relation.ispartofsjr0,225
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectEucalyptus
dc.subjectgene flow
dc.subjectmating system
dc.subjectmicrosatellite loci
dc.subjecttropical trees
dc.titlePollen contamination and nonrandom mating in a Eucalyptus camaldulensis Dehnh seedling seed orcharden
dc.typeArtigo
dcterms.rightsHolderJohann Heinrich Von Thunen Inst-vti

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