Vigor assessment of juvenile rubber tree clones in Northwestern São Paulo State, Brazil
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Ceres |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0034-737X2021000600564 |
Resumo: | ABSTRACT Besides rubber production, one of the main goals of the genetic improvement of rubber tree [Hevea brasiliensis (Willd. ex Adr. de Juss.) Muell. Arg.] is to develop vigorous clones. The objective of the present study was to evaluate the vigor of 34 elite juvenile rubber clones. To this end, three experiments were conducted in the municipality of Pontes Gestal, in the northwest region of the São Paulo State. Each experiment consisted of 10 treatments, and 2 controls in common to the 3 experiments. The experiments were arranged in the randomized block design, with three replications and ten plants per plot, in the 8 m x 2.5 m spacing. Individual and joint analyses of variance were performed. The means were compared using the Dunnett test at 5%. Significant effect of treatments was found in the three experiments and in the joint analysis. The most vigorous clones were not different from the controls in the comparison of means by the individual and joint analyses. The less vigorous clones were statistically different from the others and from the controls, reflecting this difference in the genetic variability observed. The breeding program must consider the lack of difference between the most vigorous clones and the controls when recombining superior clones, since genetic gain depends on variability. |
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Vigor assessment of juvenile rubber tree clones in Northwestern São Paulo State, Braziljoint analysisDunnet testrubber tree girthgenetic variabilityABSTRACT Besides rubber production, one of the main goals of the genetic improvement of rubber tree [Hevea brasiliensis (Willd. ex Adr. de Juss.) Muell. Arg.] is to develop vigorous clones. The objective of the present study was to evaluate the vigor of 34 elite juvenile rubber clones. To this end, three experiments were conducted in the municipality of Pontes Gestal, in the northwest region of the São Paulo State. Each experiment consisted of 10 treatments, and 2 controls in common to the 3 experiments. The experiments were arranged in the randomized block design, with three replications and ten plants per plot, in the 8 m x 2.5 m spacing. Individual and joint analyses of variance were performed. The means were compared using the Dunnett test at 5%. Significant effect of treatments was found in the three experiments and in the joint analysis. The most vigorous clones were not different from the controls in the comparison of means by the individual and joint analyses. The less vigorous clones were statistically different from the others and from the controls, reflecting this difference in the genetic variability observed. The breeding program must consider the lack of difference between the most vigorous clones and the controls when recombining superior clones, since genetic gain depends on variability.Universidade Federal de Viçosa2021-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0034-737X2021000600564Revista Ceres v.68 n.6 2021reponame:Revista Ceresinstname:Universidade Federal de Viçosa (UFV)instacron:UFV10.1590/0034-737x202168060008info:eu-repo/semantics/openAccessGonçalves,Elaine Cristine PifferGouvêa,Lígia Regina LimaMartins,Antonio Lúcio MelloBranco,Roberto Botelho FerrazGonçalves,Paulo de Souzaeng2021-11-30T00:00:00ZRevista |
dc.title.none.fl_str_mv |
Vigor assessment of juvenile rubber tree clones in Northwestern São Paulo State, Brazil |
title |
Vigor assessment of juvenile rubber tree clones in Northwestern São Paulo State, Brazil |
spellingShingle |
Vigor assessment of juvenile rubber tree clones in Northwestern São Paulo State, Brazil Gonçalves,Elaine Cristine Piffer joint analysis Dunnet test rubber tree girth genetic variability |
title_short |
Vigor assessment of juvenile rubber tree clones in Northwestern São Paulo State, Brazil |
title_full |
Vigor assessment of juvenile rubber tree clones in Northwestern São Paulo State, Brazil |
title_fullStr |
Vigor assessment of juvenile rubber tree clones in Northwestern São Paulo State, Brazil |
title_full_unstemmed |
Vigor assessment of juvenile rubber tree clones in Northwestern São Paulo State, Brazil |
title_sort |
Vigor assessment of juvenile rubber tree clones in Northwestern São Paulo State, Brazil |
author |
Gonçalves,Elaine Cristine Piffer |
author_facet |
Gonçalves,Elaine Cristine Piffer Gouvêa,Lígia Regina Lima Martins,Antonio Lúcio Mello Branco,Roberto Botelho Ferraz Gonçalves,Paulo de Souza |
author_role |
author |
author2 |
Gouvêa,Lígia Regina Lima Martins,Antonio Lúcio Mello Branco,Roberto Botelho Ferraz Gonçalves,Paulo de Souza |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Gonçalves,Elaine Cristine Piffer Gouvêa,Lígia Regina Lima Martins,Antonio Lúcio Mello Branco,Roberto Botelho Ferraz Gonçalves,Paulo de Souza |
dc.subject.por.fl_str_mv |
joint analysis Dunnet test rubber tree girth genetic variability |
topic |
joint analysis Dunnet test rubber tree girth genetic variability |
dc.description.none.fl_txt_mv |
ABSTRACT Besides rubber production, one of the main goals of the genetic improvement of rubber tree [Hevea brasiliensis (Willd. ex Adr. de Juss.) Muell. Arg.] is to develop vigorous clones. The objective of the present study was to evaluate the vigor of 34 elite juvenile rubber clones. To this end, three experiments were conducted in the municipality of Pontes Gestal, in the northwest region of the São Paulo State. Each experiment consisted of 10 treatments, and 2 controls in common to the 3 experiments. The experiments were arranged in the randomized block design, with three replications and ten plants per plot, in the 8 m x 2.5 m spacing. Individual and joint analyses of variance were performed. The means were compared using the Dunnett test at 5%. Significant effect of treatments was found in the three experiments and in the joint analysis. The most vigorous clones were not different from the controls in the comparison of means by the individual and joint analyses. The less vigorous clones were statistically different from the others and from the controls, reflecting this difference in the genetic variability observed. The breeding program must consider the lack of difference between the most vigorous clones and the controls when recombining superior clones, since genetic gain depends on variability. |
description |
ABSTRACT Besides rubber production, one of the main goals of the genetic improvement of rubber tree [Hevea brasiliensis (Willd. ex Adr. de Juss.) Muell. Arg.] is to develop vigorous clones. The objective of the present study was to evaluate the vigor of 34 elite juvenile rubber clones. To this end, three experiments were conducted in the municipality of Pontes Gestal, in the northwest region of the São Paulo State. Each experiment consisted of 10 treatments, and 2 controls in common to the 3 experiments. The experiments were arranged in the randomized block design, with three replications and ten plants per plot, in the 8 m x 2.5 m spacing. Individual and joint analyses of variance were performed. The means were compared using the Dunnett test at 5%. Significant effect of treatments was found in the three experiments and in the joint analysis. The most vigorous clones were not different from the controls in the comparison of means by the individual and joint analyses. The less vigorous clones were statistically different from the others and from the controls, reflecting this difference in the genetic variability observed. The breeding program must consider the lack of difference between the most vigorous clones and the controls when recombining superior clones, since genetic gain depends on variability. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-12-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0034-737X2021000600564 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0034-737X2021000600564 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0034-737x202168060008 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Universidade Federal de Viçosa |
publisher.none.fl_str_mv |
Universidade Federal de Viçosa |
dc.source.none.fl_str_mv |
Revista Ceres v.68 n.6 2021 reponame:Revista Ceres instname:Universidade Federal de Viçosa (UFV) instacron:UFV |
instname_str |
Universidade Federal de Viçosa (UFV) |
instacron_str |
UFV |
institution |
UFV |
reponame_str |
Revista Ceres |
collection |
Revista Ceres |
repository.name.fl_str_mv |
|
repository.mail.fl_str_mv |
|
_version_ |
1728006784208076800 |