Preliminary assessment of some new rubber tree clones in Manaus (AM)
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/15171 |
Resumo: | Twenty-five rubber tree (Hevea spp.) clones in two different immature stages were evaluated for their performance, by utilizing ten biometrical characters: yield, by the "yield minitest" (Mendes test); plant height; stem diameter; leaf whorls number; leaf whorls length; leaf thickness; total number of latex vessels rings; latex vessels diameter; density of latex vessels per 5 mm per ring; and average distance between consecutive latex vessels rings. The treatments were composed of primary clones (originated from a wild rubber tree selection), polyploids, and primary and second hybrids. The polyploid clones IAC 207 and IAC 222 showed the best performance concerned to yield. A poor adaptability to the ecological conditions of Manaus was observed for the primary clones from Acre and Rondônia, except for AC 53. In general, good vigor performance was observed in the clones IAN 6158, Fx 4037, AC 53 and IAN 717. However, great alterations in the vegetative development of the clones appeared in the second year in comparison to the first year: this means that the evolution must take place during a greater number of years. Largo effect of clones x year interaction on the yield, bark thickness, total number of latex vessels rings and density of latex vessels rings per 5 mm per ring was observed. A dose relationship between bark thickness and yields was also observed. |
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Preliminary assessment of some new rubber tree clones in Manaus (AM)Avaliação preliminar do comportamento de novos clones de seringueira em ManausHevea; early test; clone x year interactionHevea; teste precoce; interação clone x anoTwenty-five rubber tree (Hevea spp.) clones in two different immature stages were evaluated for their performance, by utilizing ten biometrical characters: yield, by the "yield minitest" (Mendes test); plant height; stem diameter; leaf whorls number; leaf whorls length; leaf thickness; total number of latex vessels rings; latex vessels diameter; density of latex vessels per 5 mm per ring; and average distance between consecutive latex vessels rings. The treatments were composed of primary clones (originated from a wild rubber tree selection), polyploids, and primary and second hybrids. The polyploid clones IAC 207 and IAC 222 showed the best performance concerned to yield. A poor adaptability to the ecological conditions of Manaus was observed for the primary clones from Acre and Rondônia, except for AC 53. In general, good vigor performance was observed in the clones IAN 6158, Fx 4037, AC 53 and IAN 717. However, great alterations in the vegetative development of the clones appeared in the second year in comparison to the first year: this means that the evolution must take place during a greater number of years. Largo effect of clones x year interaction on the yield, bark thickness, total number of latex vessels rings and density of latex vessels rings per 5 mm per ring was observed. A dose relationship between bark thickness and yields was also observed.Foram avaliados 25 clones de seringueira (Hevea spp.), em dois estádios de desenvolvimento, quanto a dez caracteres: produção, pelo "miniteste de produção" (antigo Teste de Mendes); altura da planta; diâmetro do caule; número de lançamento; comprimento dos lançamentos; espessura da folha; número total de anéis de vasos laticíferos; diâmetro dos vasos laticíferos; densidade de vasos laticíferos por 5 mm de anel e distância média entre consecutivos anéis de vasos. Os tratamentos foram constituídos de clones primários (seleção de matrizes de seringais nativos); poliplóides e híbridos primários e secundários. Os clones poliplóides IAC 207 e IAC 222 destacaram-se quanto à produção de borracha. Verificou-se pouca adaptabilidade dos clones primários, vindos do Acre e Rondônia, às condições ecológicas de Manaus, com exceção do AC 53. Em geral, os clones IAN 6158, Fx 4037, AC 53 e IAN 717 apresentaram bom desempenho. Entretanto, grandes alterações no desenvolvimento vegetativo dos clones começaram a se manifestar no segundo ano em relação ao primeiro ano, indicando que a avaliação deve ser feita durante um número maior de anos. Grande influência do efeito da interação tratamento x ano foi detectada, na avaliação dos caracteres produção, espessura da casca, número de anéis de vasos laticíferos e densidade de vasos em 5 mm de anel. Também foi verificada estreita associação do caráter espessura da casca com a produção da borracha.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraPaiva, João Rodrigues deGonçalves, Paulo de SouzaValois, Afonso Celso Candeira2014-04-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/15171Pesquisa Agropecuaria Brasileira; v.18, n.2, fev. 1983; 147-158Pesquisa Agropecuária Brasileira; v.18, n.2, fev. 1983; 147-1581678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/15171/8977info:eu-repo/semantics/openAccess2014-04-16T18:50:35Zoai:ojs.seer.sct.embrapa.br:article/15171Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-16T18:50:35Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Preliminary assessment of some new rubber tree clones in Manaus (AM) Avaliação preliminar do comportamento de novos clones de seringueira em Manaus |
title |
Preliminary assessment of some new rubber tree clones in Manaus (AM) |
spellingShingle |
Preliminary assessment of some new rubber tree clones in Manaus (AM) Paiva, João Rodrigues de Hevea; early test; clone x year interaction Hevea; teste precoce; interação clone x ano |
title_short |
Preliminary assessment of some new rubber tree clones in Manaus (AM) |
title_full |
Preliminary assessment of some new rubber tree clones in Manaus (AM) |
title_fullStr |
Preliminary assessment of some new rubber tree clones in Manaus (AM) |
title_full_unstemmed |
Preliminary assessment of some new rubber tree clones in Manaus (AM) |
title_sort |
Preliminary assessment of some new rubber tree clones in Manaus (AM) |
author |
Paiva, João Rodrigues de |
author_facet |
Paiva, João Rodrigues de Gonçalves, Paulo de Souza Valois, Afonso Celso Candeira |
author_role |
author |
author2 |
Gonçalves, Paulo de Souza Valois, Afonso Celso Candeira |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Paiva, João Rodrigues de Gonçalves, Paulo de Souza Valois, Afonso Celso Candeira |
dc.subject.por.fl_str_mv |
Hevea; early test; clone x year interaction Hevea; teste precoce; interação clone x ano |
topic |
Hevea; early test; clone x year interaction Hevea; teste precoce; interação clone x ano |
description |
Twenty-five rubber tree (Hevea spp.) clones in two different immature stages were evaluated for their performance, by utilizing ten biometrical characters: yield, by the "yield minitest" (Mendes test); plant height; stem diameter; leaf whorls number; leaf whorls length; leaf thickness; total number of latex vessels rings; latex vessels diameter; density of latex vessels per 5 mm per ring; and average distance between consecutive latex vessels rings. The treatments were composed of primary clones (originated from a wild rubber tree selection), polyploids, and primary and second hybrids. The polyploid clones IAC 207 and IAC 222 showed the best performance concerned to yield. A poor adaptability to the ecological conditions of Manaus was observed for the primary clones from Acre and Rondônia, except for AC 53. In general, good vigor performance was observed in the clones IAN 6158, Fx 4037, AC 53 and IAN 717. However, great alterations in the vegetative development of the clones appeared in the second year in comparison to the first year: this means that the evolution must take place during a greater number of years. Largo effect of clones x year interaction on the yield, bark thickness, total number of latex vessels rings and density of latex vessels rings per 5 mm per ring was observed. A dose relationship between bark thickness and yields was also observed. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-04-16 |
dc.type.none.fl_str_mv |
|
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://seer.sct.embrapa.br/index.php/pab/article/view/15171 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/15171 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/15171/8977 |
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 |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.18, n.2, fev. 1983; 147-158 Pesquisa Agropecuária Brasileira; v.18, n.2, fev. 1983; 147-158 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pab@sct.embrapa.br || sct.pab@embrapa.br |
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1793416689217437696 |