Thinning strategies for Eucalyptus dunnii population: balance between breeding and conservation using spatial variation and competition model

dc.contributor.authorde Araujo, Marcio José
dc.contributor.authorde Paula, Rinaldo Cesar [UNESP]
dc.contributor.authorde Moraes, Cristiano Bueno
dc.contributor.authorPieroni, Gustavo
dc.contributor.authorda Silva, Paulo Henrique Müller [UNESP]
dc.contributor.institutionIPEF – Instituto de Pesquisas e Estudos Florestais
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversidade Federal do Tocantins UFT- Campus de Gurupi Laboratório de Silvicultura e Melhoramento Florestal
dc.contributor.institutionPalmasola S/A Madeiras e Agricultura Av. Claudino Crestani
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2022-04-28T19:44:51Z
dc.date.available2022-04-28T19:44:51Z
dc.date.issued2021-10-01
dc.description.abstractFor continuous genetic gains over time, a balance between genetic gain and maintaining the genetic base must be a constant concern of forest breeders. This study aims at determining the best thinning strategies for a population of Eucalyptus dunnii, by incorporating the effects of environmental heterogeneity and competition in the analysis, as well as the best growth trait regarding precision and accuracy. The population studied consisted of 160 open-pollinated families. The survival and growth (height, HT; diameter at breast height, DBH; and volume, VOL) were evaluated 4 years after planting. The growth rate data were analyzed and compared by four mixed models. Selection and thinning strategies were simulated by varying the number of families, individuals within families, and selected individuals, considering the estimated genetic gains and the effective size. The species showed good survival (89.7%) and productive performance (mean annual increment = 42 m3 ha−1 y−1). The Spatial+Competition Model provided the best fit for DBH and VOL. The strategies that allow a balance between improvement (genetic gains) and genetic conservation (effective size) consist of keeping 36 to 50% of the individuals in the test (370 to 510 trees ha−1), by reducing more intensively the number of individuals from the worst-performing families. The selection of 100 individuals with a restriction of at most one individual per family generates the largest number of effective size (Ne), with more than double the Ne obtained without restricting the individuals per family, with a small drop in genetic gain.en
dc.description.affiliationIPEF – Instituto de Pesquisas e Estudos Florestais, Via Comendador Pedro Morganti, 3500 Bairro Monte Alegre
dc.description.affiliationFaculdade de Ciências Agrarias e Veterinárias (FCAV) Universidade Estadual de São Paulo Julio de Mesquita Filho (Unesp) Jaboticabal, Via de Acesso Prof. Paulo Donato Castellane, Km 5
dc.description.affiliationUniversidade Federal do Tocantins UFT- Campus de Gurupi Laboratório de Silvicultura e Melhoramento Florestal
dc.description.affiliationPalmasola S/A Madeiras e Agricultura Av. Claudino Crestani, 515 - Centro
dc.description.affiliationEscola Superior de Agriculutra Luiiz de Queiroz Universidade de São Paulo, Av. Pádua Dias 11
dc.description.affiliationUniversidade Estadual de São Paulo (UNESP/Botucatu), Rua José Barbosa de Barros, 1780, CP 237
dc.description.affiliationUnespFaculdade de Ciências Agrarias e Veterinárias (FCAV) Universidade Estadual de São Paulo Julio de Mesquita Filho (Unesp) Jaboticabal, Via de Acesso Prof. Paulo Donato Castellane, Km 5
dc.description.affiliationUnespUniversidade Estadual de São Paulo (UNESP/Botucatu), Rua José Barbosa de Barros, 1780, CP 237
dc.identifierhttp://dx.doi.org/10.1007/s11295-021-01523-w
dc.identifier.citationTree Genetics and Genomes, v. 17, n. 5, 2021.
dc.identifier.doi10.1007/s11295-021-01523-w
dc.identifier.issn1614-2950
dc.identifier.issn1614-2942
dc.identifier.scopus2-s2.0-85115622569
dc.identifier.urihttp://hdl.handle.net/11449/222472
dc.language.isoeng
dc.relation.ispartofTree Genetics and Genomes
dc.sourceScopus
dc.subjectCompetition between plants
dc.subjectEffective size
dc.subjectEnvironmental heterogeneity
dc.subjectGenetic gains
dc.subjectRecurrent selection
dc.titleThinning strategies for Eucalyptus dunnii population: balance between breeding and conservation using spatial variation and competition modelen
dc.typeArtigo
unesp.author.orcid0000-0001-7218-3879[1]

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