dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorUniversidade Federal de Viçosa (UFV)
dc.contributorEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.date.accessioned2014-05-27T11:22:29Z
dc.date.accessioned2022-10-05T18:07:18Z
dc.date.available2014-05-27T11:22:29Z
dc.date.available2022-10-05T18:07:18Z
dc.date.created2014-05-27T11:22:29Z
dc.date.issued2007-06-01
dc.identifierScientia Forestalis/Forest Sciences, n. 74, p. 55-65, 2007.
dc.identifier1413-9324
dc.identifierhttp://hdl.handle.net/11449/69702
dc.identifierWOS:000208714500006
dc.identifier2-s2.0-34547466587
dc.identifier2-s2.0-34547466587.pdf
dc.identifier9339164677717394
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/3919107
dc.description.abstractThe objective of this work was to study the effect of selective thinning on the estimates of genetic parameters in progenies of Pinus caribaea var. hondurensis. The progeny test was installed in June 1986, following a 10 × 10, triple square lattice design, containing ten trees in linear plots in 3.0 × 3.0m spacing. Twelve years after the planting, a selective thinning based on Multi-effect index (selection for DBH) was performed, leaving six trees per plot. The assessments were done in four situations: A (before thinning); B (among thinned trees); C (among remnant trees at 13 years of age) and D (two years after the thinning). The following traits were analyzed: total height (H), diameter at breast height (DBH), volume (VOL), stem form (FOR), foxtail (FT), wood density at 1.3 m (WD1) and wood density at the half height (WD2). The thinning led to increase in the estimates of variability among progenies for VOL and decrease for ALT and DBH. There was a high and positive genetic correlation among the growth traits, mainly between DBH and VOL. The latter remained unchanged after thinning. The narrow-sense heritabilities at the individual level, showed a slight increase while at the family mean level had a reduction with the thinning. The estimates of breeding values increased with the thinning. This may lead to an easier identification of the best progenies in further selection.
dc.languagepor
dc.relationScientia Forestalis/Forest Sciences
dc.relation0.500
dc.relation0,495
dc.rightsAcesso aberto
dc.sourceScopus
dc.subjectGenetic variability
dc.subjectProgeny test
dc.subjectTree improvement
dc.subjectMulti-effect index
dc.subjectParameter estimation
dc.subjectGenetic engineering
dc.subjectBreeding
dc.subjectGenetic Engineering
dc.subjectThinning
dc.titleEfeito do desbaste seletivo nas estimativas de parâmetros genéticos em progénies de Pinus caribaea Morelet var. hondurensis
dc.typeArtigo


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