EARLY SELECTION VIABILITY IN Eucalyptus spp CLONAL TESTS

<p>With the aim of evaluating <em>Eucalyptus </em>spp. for early selection efficiency, the height (HGT), diameter at breast height (DBH) and individual wood volume (VOL) of two clonal tests were assessed at the ages of 25, 50, and 72 months. The experimental design consisted of ran...

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Main Authors: Renata Alves Meira Massaro, Cesar Augusto Valencise Bonine, Edimar Aparecido Scarpinati, Rinaldo César de Paula
Format: Article
Language:Portuguese
Published: Universidade Federal de Santa Maria 2010-12-01
Series:Ciência Florestal
Subjects:
Online Access:http://cascavel.ufsm.br/revistas/ojs-2.2.2/index.php/cienciaflorestal/article/view/2418
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spelling doaj-2821fd08c6b640ab94a1db5779bac2d42020-11-25T00:53:15ZporUniversidade Federal de Santa MariaCiência Florestal0103-99541980-50982010-12-0120459760910.5902/1980509824181460EARLY SELECTION VIABILITY IN Eucalyptus spp CLONAL TESTSRenata Alves Meira Massaro0Cesar Augusto Valencise BonineEdimar Aparecido ScarpinatiRinaldo César de PaulaUFSM<p>With the aim of evaluating <em>Eucalyptus </em>spp. for early selection efficiency, the height (HGT), diameter at breast height (DBH) and individual wood volume (VOL) of two clonal tests were assessed at the ages of 25, 50, and 72 months. The experimental design consisted of randomized blocks, containing 30 treatments (clones), 6 replications and linear plots, one of them with 6 plants and the other with 10 plants, at the spacing of 3.0m x 3.0m. Variance analysis for each trait and age were carried out in the trials. The estimates of genotypic determination coefficient and the correlation between the early and mature ages for each trait were obtained. In order to confirm the viability of early selection, a simulated selection was performed at young and mature ages, adopting 30% of selection proportion for each trait and age considered. The genetic gains were estimated by using both direct and indirect selection. There were significant differences among clones evaluated in the two experiments for all traits and ages. Based on the results obtained for DBH in eucalyptus clonal tests, the use of early selection at the age of 2 years is feasible.</p>http://cascavel.ufsm.br/revistas/ojs-2.2.2/index.php/cienciaflorestal/article/view/2418melhoramento genéticocorrelação juvenil-adultoseleção antecipada
collection DOAJ
language Portuguese
format Article
sources DOAJ
author Renata Alves Meira Massaro
Cesar Augusto Valencise Bonine
Edimar Aparecido Scarpinati
Rinaldo César de Paula
spellingShingle Renata Alves Meira Massaro
Cesar Augusto Valencise Bonine
Edimar Aparecido Scarpinati
Rinaldo César de Paula
EARLY SELECTION VIABILITY IN Eucalyptus spp CLONAL TESTS
Ciência Florestal
melhoramento genético
correlação juvenil-adulto
seleção antecipada
author_facet Renata Alves Meira Massaro
Cesar Augusto Valencise Bonine
Edimar Aparecido Scarpinati
Rinaldo César de Paula
author_sort Renata Alves Meira Massaro
title EARLY SELECTION VIABILITY IN Eucalyptus spp CLONAL TESTS
title_short EARLY SELECTION VIABILITY IN Eucalyptus spp CLONAL TESTS
title_full EARLY SELECTION VIABILITY IN Eucalyptus spp CLONAL TESTS
title_fullStr EARLY SELECTION VIABILITY IN Eucalyptus spp CLONAL TESTS
title_full_unstemmed EARLY SELECTION VIABILITY IN Eucalyptus spp CLONAL TESTS
title_sort early selection viability in eucalyptus spp clonal tests
publisher Universidade Federal de Santa Maria
series Ciência Florestal
issn 0103-9954
1980-5098
publishDate 2010-12-01
description <p>With the aim of evaluating <em>Eucalyptus </em>spp. for early selection efficiency, the height (HGT), diameter at breast height (DBH) and individual wood volume (VOL) of two clonal tests were assessed at the ages of 25, 50, and 72 months. The experimental design consisted of randomized blocks, containing 30 treatments (clones), 6 replications and linear plots, one of them with 6 plants and the other with 10 plants, at the spacing of 3.0m x 3.0m. Variance analysis for each trait and age were carried out in the trials. The estimates of genotypic determination coefficient and the correlation between the early and mature ages for each trait were obtained. In order to confirm the viability of early selection, a simulated selection was performed at young and mature ages, adopting 30% of selection proportion for each trait and age considered. The genetic gains were estimated by using both direct and indirect selection. There were significant differences among clones evaluated in the two experiments for all traits and ages. Based on the results obtained for DBH in eucalyptus clonal tests, the use of early selection at the age of 2 years is feasible.</p>
topic melhoramento genético
correlação juvenil-adulto
seleção antecipada
url http://cascavel.ufsm.br/revistas/ojs-2.2.2/index.php/cienciaflorestal/article/view/2418
work_keys_str_mv AT renataalvesmeiramassaro earlyselectionviabilityineucalyptussppclonaltests
AT cesaraugustovalencisebonine earlyselectionviabilityineucalyptussppclonaltests
AT edimaraparecidoscarpinati earlyselectionviabilityineucalyptussppclonaltests
AT rinaldocesardepaula earlyselectionviabilityineucalyptussppclonaltests
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