Artigo

Estimates of genetic parameters and selection methods for genetic improvement of Pinus caribaea var. hondurensis

The objective of this work was to study the genetic variability through progeny tests, and to determine the genetic gain through individual, combined and multieffect index selection in Pinus caribaea var. hondurensis. Two progeny tests were carried out in Tibagi, Paraná State, Brazil, on September,...

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Autor principal: Sampaio, Paulo de Tarso Barbosa
Outros Autores: Resende, Marcos Deon Vilela de, Araujo, Antonio José de
Grau: Artigo
Idioma: pt_BR
Publicado em: Pesquisa Agropecuaria Brasileira 2020
Acesso em linha: https://repositorio.inpa.gov.br/handle/1/15124
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spelling oai:repositorio:1-15124 Estimates of genetic parameters and selection methods for genetic improvement of Pinus caribaea var. hondurensis Estimativas de parâmetros genéticos e métodos de seleção para o melhoramento genético de Pinus caribaea var. hondurensis Sampaio, Paulo de Tarso Barbosa Resende, Marcos Deon Vilela de Araujo, Antonio José de The objective of this work was to study the genetic variability through progeny tests, and to determine the genetic gain through individual, combined and multieffect index selection in Pinus caribaea var. hondurensis. Two progeny tests were carried out in Tibagi, Paraná State, Brazil, on September, 1988. Growth data and tree characteristics were assessed when progenies were five years old. The mean volumetric timber production was 0.091 m3 per tree. To establish a seedling seed orchard (SSO), it should be selected (in the block) 190 trees (95 trees per provenance) with the greatest genetic gain diameter at breast height (DBH). Selection of these trees will allow and increase in the volumetric timber production, reaching 0.104 m3 per tree (individual selection), 0.106 m3 per tree (combined selection) and 0.106 m3 per tree (multieffect index). To establish a clonal seed orchard (CSO), it should be selected, in the experiment, 30 trees (15 trees per provenance) with the greatest genetic gain in DBH. Volumetric timber production, will attain 0.113 m3, 0.113 m3 and 0.114 m3 per tree, in the individual, combined and multieffect index selection, respectively. 2020-05-07T14:06:23Z 2020-05-07T14:06:23Z 2000 Artigo https://repositorio.inpa.gov.br/handle/1/15124 10.1590/S0100-204X2000001100017 pt_BR Volume 35, Número 11, Pags. 2243-2253 Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf Pesquisa Agropecuaria Brasileira
institution Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection INPA-RI
language pt_BR
description The objective of this work was to study the genetic variability through progeny tests, and to determine the genetic gain through individual, combined and multieffect index selection in Pinus caribaea var. hondurensis. Two progeny tests were carried out in Tibagi, Paraná State, Brazil, on September, 1988. Growth data and tree characteristics were assessed when progenies were five years old. The mean volumetric timber production was 0.091 m3 per tree. To establish a seedling seed orchard (SSO), it should be selected (in the block) 190 trees (95 trees per provenance) with the greatest genetic gain diameter at breast height (DBH). Selection of these trees will allow and increase in the volumetric timber production, reaching 0.104 m3 per tree (individual selection), 0.106 m3 per tree (combined selection) and 0.106 m3 per tree (multieffect index). To establish a clonal seed orchard (CSO), it should be selected, in the experiment, 30 trees (15 trees per provenance) with the greatest genetic gain in DBH. Volumetric timber production, will attain 0.113 m3, 0.113 m3 and 0.114 m3 per tree, in the individual, combined and multieffect index selection, respectively.
format Artigo
author Sampaio, Paulo de Tarso Barbosa
spellingShingle Sampaio, Paulo de Tarso Barbosa
Estimates of genetic parameters and selection methods for genetic improvement of Pinus caribaea var. hondurensis
author2 Resende, Marcos Deon Vilela de
Araujo, Antonio José de
author2Str Resende, Marcos Deon Vilela de
Araujo, Antonio José de
title Estimates of genetic parameters and selection methods for genetic improvement of Pinus caribaea var. hondurensis
title_short Estimates of genetic parameters and selection methods for genetic improvement of Pinus caribaea var. hondurensis
title_full Estimates of genetic parameters and selection methods for genetic improvement of Pinus caribaea var. hondurensis
title_fullStr Estimates of genetic parameters and selection methods for genetic improvement of Pinus caribaea var. hondurensis
title_full_unstemmed Estimates of genetic parameters and selection methods for genetic improvement of Pinus caribaea var. hondurensis
title_sort estimates of genetic parameters and selection methods for genetic improvement of pinus caribaea var. hondurensis
publisher Pesquisa Agropecuaria Brasileira
publishDate 2020
url https://repositorio.inpa.gov.br/handle/1/15124
_version_ 1787143716711956480
score 11.755432

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