GENETIC VARIATION AMONG AND WITHIN PROVENANCES AND PROGENIES OF Corymbia maculata (Hook.) K. D. Hill and L. A. S. Johnson, IN PEDERNEIRAS, SP
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Cerne (Online) |
Texto Completo: | https://cerne.ufla.br/site/index.php/CERNE/article/view/167 |
Resumo: | This study aimed to estimate genetic parameters and variation in a provenance-progeny test of C. maculate (ex Eucalyptus maculata Hook.), conducted at Pederneiras Experimental Station, in São Paulo Forest Institute. The test was based on 21 open-pollination progenies from provenance Woondum St. Forest and 17 from provenance Wondai St. Forest, both in Australia. A compact family block design was adopted consisting of ten blocks, six plants per straight-line plot and two outer border rows, with spacing 3 x 2 m. Traits assessed included diameter at breast height (DBH), height, volume, form and survival rate at age 4 and 21 years. Significant differences were detected only at age 4 between provenances for DBH and height and among progenies for DBH, height and volume. The coefficient of genetic variation was higher for all traits at age 21. The heritability coefficient at the progeny level ( 2 m h ) was also higher at age 21 and ranged from 0.21 for volume to 0.40 for height, indicating that genetic progress can be achieved through selection of the best progenies. Genetic correlations were high between traits within and between age categories, showing that potential genetic gains can be achieved through indirect, early selection. Results indicate that considerable gains can be made if high selection intensity is applied among and within progenies, with values ranging from 12.48% for height to 21.77% for volume. |
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GENETIC VARIATION AMONG AND WITHIN PROVENANCES AND PROGENIES OF Corymbia maculata (Hook.) K. D. Hill and L. A. S. Johnson, IN PEDERNEIRAS, SPForest improvementgenetic variabilitygenetic selectionquantitative geneticsThis study aimed to estimate genetic parameters and variation in a provenance-progeny test of C. maculate (ex Eucalyptus maculata Hook.), conducted at Pederneiras Experimental Station, in São Paulo Forest Institute. The test was based on 21 open-pollination progenies from provenance Woondum St. Forest and 17 from provenance Wondai St. Forest, both in Australia. A compact family block design was adopted consisting of ten blocks, six plants per straight-line plot and two outer border rows, with spacing 3 x 2 m. Traits assessed included diameter at breast height (DBH), height, volume, form and survival rate at age 4 and 21 years. Significant differences were detected only at age 4 between provenances for DBH and height and among progenies for DBH, height and volume. The coefficient of genetic variation was higher for all traits at age 21. The heritability coefficient at the progeny level ( 2 m h ) was also higher at age 21 and ranged from 0.21 for volume to 0.40 for height, indicating that genetic progress can be achieved through selection of the best progenies. Genetic correlations were high between traits within and between age categories, showing that potential genetic gains can be achieved through indirect, early selection. Results indicate that considerable gains can be made if high selection intensity is applied among and within progenies, with values ranging from 12.48% for height to 21.77% for volume.CERNECERNE2015-05-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://cerne.ufla.br/site/index.php/CERNE/article/view/167CERNE; Vol. 16 No. 1 (2010); 060-067CERNE; v. 16 n. 1 (2010); 060-0672317-63420104-7760reponame:Cerne (Online)instname:Universidade Federal de Lavras (UFLA)instacron:UFLAporhttps://cerne.ufla.br/site/index.php/CERNE/article/view/167/140Copyright (c) 2015 Aida Sanae Sato, Miguel Luiz Menezes Freitas, Israel Luiz de Lima, Léo Zimback, Maria Teresa Zugliani Toniato, Alexandre Magno Sebbenninfo:eu-repo/semantics/openAccessSato, Aida SanaeFreitas, Miguel Luiz MenezesLima, Israel Luiz deZimback, LéoToniato, Maria Teresa ZuglianiSebbenn, Alexandre Magno2015-11-06T14:01:19Zoai:cerne.ufla.br:article/167Revistahttps://cerne.ufla.br/site/index.php/CERNEPUBhttps://cerne.ufla.br/site/index.php/CERNE/oaicerne@dcf.ufla.br||cerne@dcf.ufla.br2317-63420104-7760opendoar:2024-05-21T19:53:35.278051Cerne (Online) - Universidade Federal de Lavras (UFLA)true |
dc.title.none.fl_str_mv |
GENETIC VARIATION AMONG AND WITHIN PROVENANCES AND PROGENIES OF Corymbia maculata (Hook.) K. D. Hill and L. A. S. Johnson, IN PEDERNEIRAS, SP |
title |
GENETIC VARIATION AMONG AND WITHIN PROVENANCES AND PROGENIES OF Corymbia maculata (Hook.) K. D. Hill and L. A. S. Johnson, IN PEDERNEIRAS, SP |
spellingShingle |
GENETIC VARIATION AMONG AND WITHIN PROVENANCES AND PROGENIES OF Corymbia maculata (Hook.) K. D. Hill and L. A. S. Johnson, IN PEDERNEIRAS, SP Sato, Aida Sanae Forest improvement genetic variability genetic selection quantitative genetics |
title_short |
GENETIC VARIATION AMONG AND WITHIN PROVENANCES AND PROGENIES OF Corymbia maculata (Hook.) K. D. Hill and L. A. S. Johnson, IN PEDERNEIRAS, SP |
title_full |
GENETIC VARIATION AMONG AND WITHIN PROVENANCES AND PROGENIES OF Corymbia maculata (Hook.) K. D. Hill and L. A. S. Johnson, IN PEDERNEIRAS, SP |
title_fullStr |
GENETIC VARIATION AMONG AND WITHIN PROVENANCES AND PROGENIES OF Corymbia maculata (Hook.) K. D. Hill and L. A. S. Johnson, IN PEDERNEIRAS, SP |
title_full_unstemmed |
GENETIC VARIATION AMONG AND WITHIN PROVENANCES AND PROGENIES OF Corymbia maculata (Hook.) K. D. Hill and L. A. S. Johnson, IN PEDERNEIRAS, SP |
title_sort |
GENETIC VARIATION AMONG AND WITHIN PROVENANCES AND PROGENIES OF Corymbia maculata (Hook.) K. D. Hill and L. A. S. Johnson, IN PEDERNEIRAS, SP |
author |
Sato, Aida Sanae |
author_facet |
Sato, Aida Sanae Freitas, Miguel Luiz Menezes Lima, Israel Luiz de Zimback, Léo Toniato, Maria Teresa Zugliani Sebbenn, Alexandre Magno |
author_role |
author |
author2 |
Freitas, Miguel Luiz Menezes Lima, Israel Luiz de Zimback, Léo Toniato, Maria Teresa Zugliani Sebbenn, Alexandre Magno |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Sato, Aida Sanae Freitas, Miguel Luiz Menezes Lima, Israel Luiz de Zimback, Léo Toniato, Maria Teresa Zugliani Sebbenn, Alexandre Magno |
dc.subject.por.fl_str_mv |
Forest improvement genetic variability genetic selection quantitative genetics |
topic |
Forest improvement genetic variability genetic selection quantitative genetics |
description |
This study aimed to estimate genetic parameters and variation in a provenance-progeny test of C. maculate (ex Eucalyptus maculata Hook.), conducted at Pederneiras Experimental Station, in São Paulo Forest Institute. The test was based on 21 open-pollination progenies from provenance Woondum St. Forest and 17 from provenance Wondai St. Forest, both in Australia. A compact family block design was adopted consisting of ten blocks, six plants per straight-line plot and two outer border rows, with spacing 3 x 2 m. Traits assessed included diameter at breast height (DBH), height, volume, form and survival rate at age 4 and 21 years. Significant differences were detected only at age 4 between provenances for DBH and height and among progenies for DBH, height and volume. The coefficient of genetic variation was higher for all traits at age 21. The heritability coefficient at the progeny level ( 2 m h ) was also higher at age 21 and ranged from 0.21 for volume to 0.40 for height, indicating that genetic progress can be achieved through selection of the best progenies. Genetic correlations were high between traits within and between age categories, showing that potential genetic gains can be achieved through indirect, early selection. Results indicate that considerable gains can be made if high selection intensity is applied among and within progenies, with values ranging from 12.48% for height to 21.77% for volume. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-05-15 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://cerne.ufla.br/site/index.php/CERNE/article/view/167 |
url |
https://cerne.ufla.br/site/index.php/CERNE/article/view/167 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://cerne.ufla.br/site/index.php/CERNE/article/view/167/140 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
CERNE CERNE |
publisher.none.fl_str_mv |
CERNE CERNE |
dc.source.none.fl_str_mv |
CERNE; Vol. 16 No. 1 (2010); 060-067 CERNE; v. 16 n. 1 (2010); 060-067 2317-6342 0104-7760 reponame:Cerne (Online) instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Cerne (Online) |
collection |
Cerne (Online) |
repository.name.fl_str_mv |
Cerne (Online) - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
cerne@dcf.ufla.br||cerne@dcf.ufla.br |
_version_ |
1799874939549908992 |