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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
02/12/2021 |
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Data da última atualização: |
02/12/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
TEIXEIRA, J. H. dos S.; GUIMARÃES, M. A. S.; CARDOSO, S. C.; BRITO, A. dos S.; DINIZ, R. P.; OLIVEIRA, E. J. de; OLIVEIRA, S. A. S. de. |
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Afiliação: |
JESSICA HELLEN DOS SANTOS TEIXEIRA, IF Baiano; MACELLE AMANDA SILVA GUIMARÃES, IF Baiano; SUANE COUTINHO CARDOSO, IF Baiano; ALEXSANDRO DOS SANTOS BRITO, IF Baiano; RAFAEL PARREIRA DINIZ; EDER JORGE DE OLIVEIRA, CNPMF; SAULO ALVES SANTOS DE OLIVEIRA, CNPMF. |
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Título: |
Evaluation of resistance to bacterial blight in Brazilian cassava germoplasm and disease-yield relationships. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Tropical Plant Pathology, 2021. |
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ISSN: |
1983-2052 |
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Idioma: |
Inglês |
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Conteúdo: |
Cassava, an important source of carbohydrates in many developing countries, is affected by several diseases including bacterial blight, caused by Xanthomonas phaseoli pv. manihotis (Xpm), responsible for considerable losses in production. A 3-year split-plot design experiment was conducted to evaluate the resistance of 83 Brazilian cassava genotypes to Xpm under field conditions, inoculated or not with bacterial suspension (108 CFU mL?1). The relationship between disease progress and yield traits was also studied. Disease severity was evaluated using an ordinal 0 (no symptoms) to 8 (maximum degree of the disease) scores. At 11 months after planting, the following traits were measured: plant height, above-ground yield (measured as the total weight of leaves and stem), fresh root yield, dry matter content in the roots, and dry root yield. Based on the calculated disease index (DI) and the area under the disease progress curve (AUDPC) values, the accessions were grouped into different classes of resistance/susceptibility. There were 16 accessions classified as moderately resistant (MR), 14 as moderately susceptible (MS), 41 as susceptible (S), and 12 as extremely susceptible (ES). Complete resistance to bacterial blight was not found. Despite the significant reduction in above-ground and root yield average for the inoculated plants, when compared to non-inoculated, there was no correlation between the severity (DI) or disease progress (AUDPC) and the agronomic performance of cassava genotypes. The selection of the best 10 accessions should be a priority, considering that the agronomic performance could increase the above-ground yield, fresh root yield, and dry root yield by 22.17%, 109.61%, and 114.64%, respectively. MenosCassava, an important source of carbohydrates in many developing countries, is affected by several diseases including bacterial blight, caused by Xanthomonas phaseoli pv. manihotis (Xpm), responsible for considerable losses in production. A 3-year split-plot design experiment was conducted to evaluate the resistance of 83 Brazilian cassava genotypes to Xpm under field conditions, inoculated or not with bacterial suspension (108 CFU mL?1). The relationship between disease progress and yield traits was also studied. Disease severity was evaluated using an ordinal 0 (no symptoms) to 8 (maximum degree of the disease) scores. At 11 months after planting, the following traits were measured: plant height, above-ground yield (measured as the total weight of leaves and stem), fresh root yield, dry matter content in the roots, and dry root yield. Based on the calculated disease index (DI) and the area under the disease progress curve (AUDPC) values, the accessions were grouped into different classes of resistance/susceptibility. There were 16 accessions classified as moderately resistant (MR), 14 as moderately susceptible (MS), 41 as susceptible (S), and 12 as extremely susceptible (ES). Complete resistance to bacterial blight was not found. Despite the significant reduction in above-ground and root yield average for the inoculated plants, when compared to non-inoculated, there was no correlation between the severity (DI) or disease progress (AUDPC) and the agronomic performance of ca... Mostrar Tudo |
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Thesagro: |
Manihot Esculenta. |
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Thesaurus Nal: |
Manihot. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02426naa a2200229 a 4500
001 2137009
005 2021-12-02
008 2021 bl uuuu u00u1 u #d
022 $a1983-2052
100 1 $aTEIXEIRA, J. H. dos S.
245 $aEvaluation of resistance to bacterial blight in Brazilian cassava germoplasm and disease-yield relationships.$h[electronic resource]
260 $c2021
520 $aCassava, an important source of carbohydrates in many developing countries, is affected by several diseases including bacterial blight, caused by Xanthomonas phaseoli pv. manihotis (Xpm), responsible for considerable losses in production. A 3-year split-plot design experiment was conducted to evaluate the resistance of 83 Brazilian cassava genotypes to Xpm under field conditions, inoculated or not with bacterial suspension (108 CFU mL?1). The relationship between disease progress and yield traits was also studied. Disease severity was evaluated using an ordinal 0 (no symptoms) to 8 (maximum degree of the disease) scores. At 11 months after planting, the following traits were measured: plant height, above-ground yield (measured as the total weight of leaves and stem), fresh root yield, dry matter content in the roots, and dry root yield. Based on the calculated disease index (DI) and the area under the disease progress curve (AUDPC) values, the accessions were grouped into different classes of resistance/susceptibility. There were 16 accessions classified as moderately resistant (MR), 14 as moderately susceptible (MS), 41 as susceptible (S), and 12 as extremely susceptible (ES). Complete resistance to bacterial blight was not found. Despite the significant reduction in above-ground and root yield average for the inoculated plants, when compared to non-inoculated, there was no correlation between the severity (DI) or disease progress (AUDPC) and the agronomic performance of cassava genotypes. The selection of the best 10 accessions should be a priority, considering that the agronomic performance could increase the above-ground yield, fresh root yield, and dry root yield by 22.17%, 109.61%, and 114.64%, respectively.
650 $aManihot
650 $aManihot Esculenta
700 1 $aGUIMARÃES, M. A. S.
700 1 $aCARDOSO, S. C.
700 1 $aBRITO, A. dos S.
700 1 $aDINIZ, R. P.
700 1 $aOLIVEIRA, E. J. de
700 1 $aOLIVEIRA, S. A. S. de
773 $tTropical Plant Pathology, 2021.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
07/11/2013 |
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Data da última atualização: |
05/08/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
ZANGARO, W.; ROSTIROLA, L. V.; SOUZA, P. B. de; ALVES, R. de A.; LESCANO, L. E.; RONDINA, A. B.; NOGUEIRA, M. A.; CARRENHO, R. |
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Afiliação: |
WALDEMAR ZANGARO; LEILA VERGAL ROSTIROLA; PRISCILA BOCHI DE SOUZA; RICARDO DE ALMEIDA ALVES; LUIZ EDUARDO AZEVEDO MARQUES LESCANO; ARTUR BERBEL LÍRIO RONDINA; MARCO ANTONIO NOGUEIRA, CNPSO; ROSILAINE CARRENHO. |
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Título: |
Root colonization and spore abundance of arbuscular mycorrhizal fungi in distinct successional stages from an Atlantic rainforest biome in southern Brazil. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Mycorrhiza, Berlin, v. 23, n. 3, p. 221-233, Apr. 2013. |
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DOI: |
10.1007/s00572-012-0464-9 |
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Idioma: |
Inglês |
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Conteúdo: |
The influence of plant functional groups and moderate seasonality on arbuscular mycorrhizal (AM) fungal status (root colonization and spore density) was investigated during 13 consecutive months in a chronosequence of succession in southern Brazil, consisting of grassland field, scrub vegetation, secondary forest and mature forest, in a region of transition from tropical to subtropical zones. AM root colonization and spore density decreased with advancing succession and were highest in early successional sites with grassland and scrub vegetation, intermediary in the secondary forest and lowest in the mature forest. They were little influenced by soil properties, but were sufficiently influenced by the fine root nutrient status and fine root traits among different functional plant groups. AM root colonization and spore density were higher during the favourable plant growth season (spring and summer) than during the less favourable plant growth season (autumn and winter). Spore density displayed significant seasonal variation at all sites, whilst root colonization displayed significant seasonal variation in grassland, scrub and secondary forest, but not in mature forest. The data suggest that (1) different plant functional groups display different relationships with AM fungi, influencing their abundance differentially; (2) plant species from early successional phases are more susceptible to AM root colonization and maintain higher AM sporulation than late successional species; (3) fine root traits and nutrient status influence these AM fungal attributes; and (4) higher AM spore production and root colonization is associated with the season of higher light incidence and temperature, abundant water in soil and higher plant metabolic activity. MenosThe influence of plant functional groups and moderate seasonality on arbuscular mycorrhizal (AM) fungal status (root colonization and spore density) was investigated during 13 consecutive months in a chronosequence of succession in southern Brazil, consisting of grassland field, scrub vegetation, secondary forest and mature forest, in a region of transition from tropical to subtropical zones. AM root colonization and spore density decreased with advancing succession and were highest in early successional sites with grassland and scrub vegetation, intermediary in the secondary forest and lowest in the mature forest. They were little influenced by soil properties, but were sufficiently influenced by the fine root nutrient status and fine root traits among different functional plant groups. AM root colonization and spore density were higher during the favourable plant growth season (spring and summer) than during the less favourable plant growth season (autumn and winter). Spore density displayed significant seasonal variation at all sites, whilst root colonization displayed significant seasonal variation in grassland, scrub and secondary forest, but not in mature forest. The data suggest that (1) different plant functional groups display different relationships with AM fungi, influencing their abundance differentially; (2) plant species from early successional phases are more susceptible to AM root colonization and maintain higher AM sporulation than late successional species;... Mostrar Tudo |
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Palavras-Chave: |
Fungos micorrízicos. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02527naa a2200229 a 4500
001 1970669
005 2017-08-05
008 2013 bl uuuu u00u1 u #d
024 7 $a10.1007/s00572-012-0464-9$2DOI
100 1 $aZANGARO, W.
245 $aRoot colonization and spore abundance of arbuscular mycorrhizal fungi in distinct successional stages from an Atlantic rainforest biome in southern Brazil.$h[electronic resource]
260 $c2013
520 $aThe influence of plant functional groups and moderate seasonality on arbuscular mycorrhizal (AM) fungal status (root colonization and spore density) was investigated during 13 consecutive months in a chronosequence of succession in southern Brazil, consisting of grassland field, scrub vegetation, secondary forest and mature forest, in a region of transition from tropical to subtropical zones. AM root colonization and spore density decreased with advancing succession and were highest in early successional sites with grassland and scrub vegetation, intermediary in the secondary forest and lowest in the mature forest. They were little influenced by soil properties, but were sufficiently influenced by the fine root nutrient status and fine root traits among different functional plant groups. AM root colonization and spore density were higher during the favourable plant growth season (spring and summer) than during the less favourable plant growth season (autumn and winter). Spore density displayed significant seasonal variation at all sites, whilst root colonization displayed significant seasonal variation in grassland, scrub and secondary forest, but not in mature forest. The data suggest that (1) different plant functional groups display different relationships with AM fungi, influencing their abundance differentially; (2) plant species from early successional phases are more susceptible to AM root colonization and maintain higher AM sporulation than late successional species; (3) fine root traits and nutrient status influence these AM fungal attributes; and (4) higher AM spore production and root colonization is associated with the season of higher light incidence and temperature, abundant water in soil and higher plant metabolic activity.
653 $aFungos micorrízicos
700 1 $aROSTIROLA, L. V.
700 1 $aSOUZA, P. B. de
700 1 $aALVES, R. de A.
700 1 $aLESCANO, L. E.
700 1 $aRONDINA, A. B.
700 1 $aNOGUEIRA, M. A.
700 1 $aCARRENHO, R.
773 $tMycorrhiza, Berlin$gv. 23, n. 3, p. 221-233, Apr. 2013.
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