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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
17/12/2014 |
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Data da última atualização: |
17/12/2014 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - B |
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Autoria: |
MACHADO, A. C. Z.; ARAUJO FILHO, J. V. |
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Título: |
Host status and phenotypic diversity of rice cultivars resistant to Meloidogyne species under glasshouse conditions |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Nematology, Leiden, v. 16, n. 8, p. 991-999, 2014. |
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Idioma: |
Inglês |
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Conteúdo: |
Five pot trials were carried out under glasshouse conditions to assess the host response of some selected rice cultivars to Meloidogyne javanica, M. paranaensis and M. enterolobii, based on nematode reproductive factor (RF) and number of nematodes (g root)−1.We also determined the broad-sense heritability and variance component estimations associated with M. paranaensis and M. incognita resistance. In addition, cluster analysis of cultivars was conducted. All cultivars were rated as susceptible or highly susceptible to M. javanica and highly resistant to M. enterolobii. To M. paranaensis, only cvs IAPAR 177 and BRS Caravela were resistant. From the principal component analysis and Ward?s cluster analysis, we obtained four conspicuous clusters of cultivars according to Meloidogyne species resistance, which demonstrates the variability of the genetic material studied. Higher broad-sense heritability
values for RF and nematodes (g root)−1 were obtained. Taken together, our findings suggest that improvement of resistance of rice to Meloidogyne species resistance is possible. The implications for management programmes are also discussed. |
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Palavras-Chave: |
crop rotation; genetic resistance sources; Oryza sativa; root-knot nematodes. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 01752naa a2200181 a 4500
001 1122587
005 2014-12-17
008 2014 bl uuuu u00u1 u #d
100 1 $aMACHADO, A. C. Z.
245 $aHost status and phenotypic diversity of rice cultivars resistant to Meloidogyne species under glasshouse conditions$h[electronic resource]
260 $c2014
520 $aFive pot trials were carried out under glasshouse conditions to assess the host response of some selected rice cultivars to Meloidogyne javanica, M. paranaensis and M. enterolobii, based on nematode reproductive factor (RF) and number of nematodes (g root)−1.We also determined the broad-sense heritability and variance component estimations associated with M. paranaensis and M. incognita resistance. In addition, cluster analysis of cultivars was conducted. All cultivars were rated as susceptible or highly susceptible to M. javanica and highly resistant to M. enterolobii. To M. paranaensis, only cvs IAPAR 177 and BRS Caravela were resistant. From the principal component analysis and Ward?s cluster analysis, we obtained four conspicuous clusters of cultivars according to Meloidogyne species resistance, which demonstrates the variability of the genetic material studied. Higher broad-sense heritability values for RF and nematodes (g root)−1 were obtained. Taken together, our findings suggest that improvement of resistance of rice to Meloidogyne species resistance is possible. The implications for management programmes are also discussed.
653 $acrop rotation
653 $agenetic resistance sources
653 $aOryza sativa
653 $aroot-knot nematodes
700 1 $aARAUJO FILHO, J. V.
773 $tNematology, Leiden$gv. 16, n. 8, p. 991-999, 2014.
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