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Genetic control of Eucalyptus urophylla and E. grandis resistance to canker caused by Chrysoporthe cubensis
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...
Autores principales: | , , , , , |
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Formato: | Texto |
Lenguaje: | English |
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Sociedade Brasileira de Genética
2010
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3036120/ https://www.ncbi.nlm.nih.gov/pubmed/21637427 http://dx.doi.org/10.1590/S1415-47572010005000069 |
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author | da Silva Guimarães, Lúcio Mauro de Resende, Marcos Deon Vilela Lau, Douglas Rosse, Leonardo Novaes Alves, Alexandre Alonso Alfenas, Acelino Couto |
author_facet | da Silva Guimarães, Lúcio Mauro de Resende, Marcos Deon Vilela Lau, Douglas Rosse, Leonardo Novaes Alves, Alexandre Alonso Alfenas, Acelino Couto |
author_sort | da Silva Guimarães, Lúcio Mauro |
collection | PubMed |
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. |
format | Text |
id | pubmed-3036120 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2010 |
publisher | Sociedade Brasileira de Genética |
record_format | MEDLINE/PubMed |
spelling | pubmed-30361202011-06-02 Genetic control of Eucalyptus urophylla and E. grandis resistance to canker caused by Chrysoporthe cubensis da Silva Guimarães, Lúcio Mauro de Resende, Marcos Deon Vilela Lau, Douglas Rosse, Leonardo Novaes Alves, Alexandre Alonso Alfenas, Acelino Couto Genet Mol Biol Plant Genetics 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. Sociedade Brasileira de Genética 2010 2010-09-01 /pmc/articles/PMC3036120/ /pubmed/21637427 http://dx.doi.org/10.1590/S1415-47572010005000069 Text en Copyright © 2010, Sociedade Brasileira de Genética. http://creativecommons.org/licenses/by/2.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Plant Genetics da Silva Guimarães, Lúcio Mauro de Resende, Marcos Deon Vilela Lau, Douglas Rosse, Leonardo Novaes Alves, Alexandre Alonso Alfenas, Acelino Couto 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 |
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_short | 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 |
topic | Plant Genetics |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3036120/ https://www.ncbi.nlm.nih.gov/pubmed/21637427 http://dx.doi.org/10.1590/S1415-47572010005000069 |
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