Genetic control of Eucalyptus urophylla and E. grandis resistance to canker caused by Chrysoporthe cubensis
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Genetics and Molecular Biology |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000300024 |
Resumo: | Chrysophorte cubensis induced canker occurs in nearly all tropical and subtropical regions where eucalypts are planted, causing losses in both wood quality and volume productivity, especially so in the warmer and more humid regions of Brazil. The wide inter and intra-specific genetic variability of resistance to canker among Eucalyptus species facilitates the selection of resistant plants. In this study, we evaluated resistance to this pathogen in five Eucalyptus grandis (G) and 15 E. urophylla (U) trees, as well as in 495 individuals from 27 progenies derived from crosses between the trees. In the field, six-months-old test seedlings were inoculated with C. cubensis. Lesion length in the xylem and bark was measured eight months later. The results demonstrated that xylem lesions could preferentially be used for the selection of resistant clones. Eight trees (7 U and 1 G) were susceptible, and the remainder (8 U and 4 G) resistant. Individual narrow and broad sense heritability estimates were 17 and 81%, respectively, thereby suggesting that canker resistance is quantitative and highly dependent on dominance and epistasis. |
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Genetic control of Eucalyptus urophylla and E. grandis resistance to canker caused by Chrysoporthe cubensisgenetic resistancegenetic breedingeucalypt and interspecific hybridsChrysophorte cubensis induced canker occurs in nearly all tropical and subtropical regions where eucalypts are planted, causing losses in both wood quality and volume productivity, especially so in the warmer and more humid regions of Brazil. The wide inter and intra-specific genetic variability of resistance to canker among Eucalyptus species facilitates the selection of resistant plants. In this study, we evaluated resistance to this pathogen in five Eucalyptus grandis (G) and 15 E. urophylla (U) trees, as well as in 495 individuals from 27 progenies derived from crosses between the trees. In the field, six-months-old test seedlings were inoculated with C. cubensis. Lesion length in the xylem and bark was measured eight months later. The results demonstrated that xylem lesions could preferentially be used for the selection of resistant clones. Eight trees (7 U and 1 G) were susceptible, and the remainder (8 U and 4 G) resistant. Individual narrow and broad sense heritability estimates were 17 and 81%, respectively, thereby suggesting that canker resistance is quantitative and highly dependent on dominance and epistasis.Sociedade Brasileira de Genética2010-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000300024Genetics and Molecular Biology v.33 n.3 2010reponame:Genetics and Molecular Biologyinstname:Sociedade Brasileira de Genética (SBG)instacron:SBG10.1590/S1415-47572010005000069info:eu-repo/semantics/openAccessGuimarães,Lúcio Mauro da SilvaResende,Marcos Deon Vilela deLau,DouglasRosse,Leonardo NovaesAlves,Alexandre AlonsoAlfenas,Acelino Coutoeng2010-08-18T00:00:00Zoai:scielo:S1415-47572010000300024Revistahttp://www.gmb.org.br/ONGhttps://old.scielo.br/oai/scielo-oai.php||editor@gmb.org.br1678-46851415-4757opendoar:2010-08-18T00:00Genetics and Molecular Biology - Sociedade Brasileira de Genética (SBG)false |
dc.title.none.fl_str_mv |
Genetic control of Eucalyptus urophylla and E. grandis resistance to canker caused by Chrysoporthe cubensis |
title |
Genetic control of Eucalyptus urophylla and E. grandis resistance to canker caused by Chrysoporthe cubensis |
spellingShingle |
Genetic control of Eucalyptus urophylla and E. grandis resistance to canker caused by Chrysoporthe cubensis Guimarães,Lúcio Mauro da Silva genetic resistance genetic breeding eucalypt and interspecific hybrids |
title_short |
Genetic control of Eucalyptus urophylla and E. grandis resistance to canker caused by Chrysoporthe cubensis |
title_full |
Genetic control of Eucalyptus urophylla and E. grandis resistance to canker caused by Chrysoporthe cubensis |
title_fullStr |
Genetic control of Eucalyptus urophylla and E. grandis resistance to canker caused by Chrysoporthe cubensis |
title_full_unstemmed |
Genetic control of Eucalyptus urophylla and E. grandis resistance to canker caused by Chrysoporthe cubensis |
title_sort |
Genetic control of Eucalyptus urophylla and E. grandis resistance to canker caused by Chrysoporthe cubensis |
author |
Guimarães,Lúcio Mauro da Silva |
author_facet |
Guimarães,Lúcio Mauro da Silva Resende,Marcos Deon Vilela de Lau,Douglas Rosse,Leonardo Novaes Alves,Alexandre Alonso Alfenas,Acelino Couto |
author_role |
author |
author2 |
Resende,Marcos Deon Vilela de Lau,Douglas Rosse,Leonardo Novaes Alves,Alexandre Alonso Alfenas,Acelino Couto |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Guimarães,Lúcio Mauro da Silva Resende,Marcos Deon Vilela de Lau,Douglas Rosse,Leonardo Novaes Alves,Alexandre Alonso Alfenas,Acelino Couto |
dc.subject.por.fl_str_mv |
genetic resistance genetic breeding eucalypt and interspecific hybrids |
topic |
genetic resistance genetic breeding eucalypt and interspecific hybrids |
description |
Chrysophorte cubensis induced canker occurs in nearly all tropical and subtropical regions where eucalypts are planted, causing losses in both wood quality and volume productivity, especially so in the warmer and more humid regions of Brazil. The wide inter and intra-specific genetic variability of resistance to canker among Eucalyptus species facilitates the selection of resistant plants. In this study, we evaluated resistance to this pathogen in five Eucalyptus grandis (G) and 15 E. urophylla (U) trees, as well as in 495 individuals from 27 progenies derived from crosses between the trees. In the field, six-months-old test seedlings were inoculated with C. cubensis. Lesion length in the xylem and bark was measured eight months later. The results demonstrated that xylem lesions could preferentially be used for the selection of resistant clones. Eight trees (7 U and 1 G) were susceptible, and the remainder (8 U and 4 G) resistant. Individual narrow and broad sense heritability estimates were 17 and 81%, respectively, thereby suggesting that canker resistance is quantitative and highly dependent on dominance and epistasis. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-01-01 |
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=S1415-47572010000300024 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000300024 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1415-47572010005000069 |
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 |
Sociedade Brasileira de Genética |
publisher.none.fl_str_mv |
Sociedade Brasileira de Genética |
dc.source.none.fl_str_mv |
Genetics and Molecular Biology v.33 n.3 2010 reponame:Genetics and Molecular Biology instname:Sociedade Brasileira de Genética (SBG) instacron:SBG |
instname_str |
Sociedade Brasileira de Genética (SBG) |
instacron_str |
SBG |
institution |
SBG |
reponame_str |
Genetics and Molecular Biology |
collection |
Genetics and Molecular Biology |
repository.name.fl_str_mv |
Genetics and Molecular Biology - Sociedade Brasileira de Genética (SBG) |
repository.mail.fl_str_mv |
||editor@gmb.org.br |
_version_ |
1752122383298199552 |