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 | Acesso ao texto completo restrito à biblioteca da Embrapa Mandioca e Fruticultura. Para informações adicionais entre em contato com cnpmf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
06/11/2017 |
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Data da última atualização: |
14/12/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
OLIVEIRA, E. J. de; OLIVEIRA, S. A. S. de; VILAS BOAS, S. A.; HOHENFELD, C. S.; SANTOS, V. da S. |
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Afiliação: |
EDER JORGE DE OLIVEIRA, CNPMF; SAULO ALVES SANTOS DE OLIVEIRA, CNPMF; SANDIELLE ARAÚJO VILAS BOAS, UFRB; CAMILA SANTIAGO HOHENFELD, UFRB; VANDERLEI DA SILVA SANTOS, CNPMF. |
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Título: |
Selection of cassava accessions with multiple resistance to pathogens associated with root rot disease. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Euphytica, p. 213:185, 2017. |
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ISSN: |
1573-5060 |
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Idioma: |
Inglês |
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Conteúdo: |
Cassava root rot disease (CRRD) severely affects productivity in several countries. The objective of this study was to estimate genetic parameters and to identify multiple resistance sources against pathogens associated with CRRD. The symptoms caused by Fusarium spp., Phytophthora spp., and Botryosphaeriaceae species in peel and pulp from the roots were evaluated in 277 accessions using a whole tuberous root inoculation method. The resistance data were obtained by REML/BLUP (restricted maximum likelihood/best linear unbiased predictor). The classic selection index (CI), multiplicative (MI), and sum of ranks (SRI) were used to identify the accessions with multiple resistance. For all pathogens, the environmental variance (r2e) was the most important component. Individual heritability h2g was of low magnitude for resistance to most pathogens (0.16 ±0.02?peel and 0.31 ± 0.03?pulp for Fusarium spp.; 0.26 ± 0.03?peel and 0.30 ± 0.03?pulp for Phytophthora spp.; and 0.28 ± 0.03?peel and 0.27 ± 0.03?pulp for Botryosphaereacea species). The distribution of CRRD symptoms indicated the presence of quantitative inheritance. The direct selection of the 15 more resistant accessions based on the genotypic predicted values result in high reductions of disease ([50%). However, there was a low matching rate of the most resistant accessions for each pathogen and the different parts of the tuberous roots (peel and pulp). The CI and MI were the most promising compared to the SRI to ensure high and balanced resistance for each pathogen. Understanding the genetic basis of resistance to CRRD and the identification of sources with multiple resistance may be useful in various management strategies to control the disease. MenosCassava root rot disease (CRRD) severely affects productivity in several countries. The objective of this study was to estimate genetic parameters and to identify multiple resistance sources against pathogens associated with CRRD. The symptoms caused by Fusarium spp., Phytophthora spp., and Botryosphaeriaceae species in peel and pulp from the roots were evaluated in 277 accessions using a whole tuberous root inoculation method. The resistance data were obtained by REML/BLUP (restricted maximum likelihood/best linear unbiased predictor). The classic selection index (CI), multiplicative (MI), and sum of ranks (SRI) were used to identify the accessions with multiple resistance. For all pathogens, the environmental variance (r2e) was the most important component. Individual heritability h2g was of low magnitude for resistance to most pathogens (0.16 ±0.02?peel and 0.31 ± 0.03?pulp for Fusarium spp.; 0.26 ± 0.03?peel and 0.30 ± 0.03?pulp for Phytophthora spp.; and 0.28 ± 0.03?peel and 0.27 ± 0.03?pulp for Botryosphaereacea species). The distribution of CRRD symptoms indicated the presence of quantitative inheritance. The direct selection of the 15 more resistant accessions based on the genotypic predicted values result in high reductions of disease ([50%). However, there was a low matching rate of the most resistant accessions for each pathogen and the different parts of the tuberous roots (peel and pulp). The CI and MI were the most promising compared to the SRI to ensure high a... Mostrar Tudo |
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Thesagro: |
Mandioca. |
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Thesaurus Nal: |
Cassava. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02326naa a2200205 a 4500
001 2078957
005 2017-12-14
008 2017 bl uuuu u00u1 u #d
022 $a1573-5060
100 1 $aOLIVEIRA, E. J. de
245 $aSelection of cassava accessions with multiple resistance to pathogens associated with root rot disease.$h[electronic resource]
260 $c2017
520 $aCassava root rot disease (CRRD) severely affects productivity in several countries. The objective of this study was to estimate genetic parameters and to identify multiple resistance sources against pathogens associated with CRRD. The symptoms caused by Fusarium spp., Phytophthora spp., and Botryosphaeriaceae species in peel and pulp from the roots were evaluated in 277 accessions using a whole tuberous root inoculation method. The resistance data were obtained by REML/BLUP (restricted maximum likelihood/best linear unbiased predictor). The classic selection index (CI), multiplicative (MI), and sum of ranks (SRI) were used to identify the accessions with multiple resistance. For all pathogens, the environmental variance (r2e) was the most important component. Individual heritability h2g was of low magnitude for resistance to most pathogens (0.16 ±0.02?peel and 0.31 ± 0.03?pulp for Fusarium spp.; 0.26 ± 0.03?peel and 0.30 ± 0.03?pulp for Phytophthora spp.; and 0.28 ± 0.03?peel and 0.27 ± 0.03?pulp for Botryosphaereacea species). The distribution of CRRD symptoms indicated the presence of quantitative inheritance. The direct selection of the 15 more resistant accessions based on the genotypic predicted values result in high reductions of disease ([50%). However, there was a low matching rate of the most resistant accessions for each pathogen and the different parts of the tuberous roots (peel and pulp). The CI and MI were the most promising compared to the SRI to ensure high and balanced resistance for each pathogen. Understanding the genetic basis of resistance to CRRD and the identification of sources with multiple resistance may be useful in various management strategies to control the disease.
650 $aCassava
650 $aMandioca
700 1 $aOLIVEIRA, S. A. S. de
700 1 $aVILAS BOAS, S. A.
700 1 $aHOHENFELD, C. S.
700 1 $aSANTOS, V. da S.
773 $tEuphytica, p. 213:185, 2017.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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Registro Completo
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
06/11/2012 |
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Data da última atualização: |
29/01/2013 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
OLIVEIRA, R. C. de; COELHO, E. F.; ARAÚJO, R. T. M.; TEIXEIRA, J. C.; BARROS, D. L.; AMORIM, M. da S. |
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Afiliação: |
RAONE COTRIM DE OLIVEIRA, Fapesb; EUGENIO FERREIRA COELHO, CNPMF; RUAN TÚLIO MONÇÃO ARAÚJO, UFRB; JACKSON CARVALHO TEIXEIRA, UFRB; DAMIANA LIMA BARROS, UFRB; MAURÍCIO DA SILVA AMORIM, UFRB. |
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Título: |
Avaliação do sistema radicular de dois cultivares de plátanos. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
In: JORNADA CIENTÍFICA EMBRAPA MANDIOCA E FRUTICULTURA, 6., 2012, Cruz das Almas. Anais... Cruz das Almas: Embrapa Mandioca e Fruticultura, 2012. |
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Idioma: |
Português |
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Conteúdo: |
A bananeira produz muitas raízes, sendo em sua maioria na parte superficial, especialmente em solos compactados. A variação na densidade de raízes está diretamente relacionada com a cultivar, potência vegetativa da planta, volume do rizoma, tipo de muda, clima, solo, estágio de crescimento, estação do ano, estado fitossanitário e tratos culturais. |
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Palavras-Chave: |
Banana D´Angola; Banana Terrinha; Distribuição radicular. |
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Thesagro: |
Sistema de Irrigação. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/69613/1/104-12-Raone-Eugenio.pdf
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Marc: |
LEADER 01104nam a2200217 a 4500
001 1939026
005 2013-01-29
008 2012 bl uuuu u00u1 u #d
100 1 $aOLIVEIRA, R. C. de
245 $aAvaliação do sistema radicular de dois cultivares de plátanos.$h[electronic resource]
260 $aIn: JORNADA CIENTÍFICA EMBRAPA MANDIOCA E FRUTICULTURA, 6., 2012, Cruz das Almas. Anais... Cruz das Almas: Embrapa Mandioca e Fruticultura$c2012
520 $aA bananeira produz muitas raízes, sendo em sua maioria na parte superficial, especialmente em solos compactados. A variação na densidade de raízes está diretamente relacionada com a cultivar, potência vegetativa da planta, volume do rizoma, tipo de muda, clima, solo, estágio de crescimento, estação do ano, estado fitossanitário e tratos culturais.
650 $aSistema de Irrigação
653 $aBanana D´Angola
653 $aBanana Terrinha
653 $aDistribuição radicular
700 1 $aCOELHO, E. F.
700 1 $aARAÚJO, R. T. M.
700 1 $aTEIXEIRA, J. C.
700 1 $aBARROS, D. L.
700 1 $aAMORIM, M. da S.
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