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...
Main Authors: | , , , |
---|---|
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 |
id |
doaj-2821fd08c6b640ab94a1db5779bac2d4 |
---|---|
record_format |
Article |
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 |
_version_ |
1725238423767220224 |