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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
24/09/2009 |
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Data da última atualização: |
14/04/2010 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
RIBEIRO, L. R.; AMORIM, E. P.; CORDEIRO, Z. M.; SILVA, S. O.; DITA, M. A. |
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Afiliação: |
Lindinéia Rios Ribeiro, UFRB; Edson Perito Amorim, CNPMF; Zilton José Maciel Cordeiro, CNPMF; Sebastião de Oliveira e Silva, CNPMF; Miguel Angel Dita, CNPMF. |
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Título: |
Discrimination of banana genotypes for Fusarium wilt resistance in greenhouse. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
In: ISHS/PROMUSA BANANA SYMPOSIUM, 2009, Guangzhou, China. Global perspectives on asian challenges: programme and abstracts. Guangzhou: ISHS: Promusa, 2009. p. 46. |
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Idioma: |
Inglês |
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Conteúdo: |
Among the major constrains to banana breeding for Fusarium wilt resistance is the long period necessary for evaluations in the field and the lack of an effective method for early detection of resistant genotypes. This work aimed to establish a screening method for Fusarium wilt resistance under greenhouse conditions and to validate its reliability by challenging cultivars with different levels of resistance. In a firts step, two types of substrates (vermiculite and washed river sand) and three inoculum sources (conidial suspension from 1- week-old colonies grown in potato dextrose agar (PDA), conidial suspension produced after stress of 1-week-old colonies and Foc-colonised corn meal-sand (CMS) medium) were studied by inoculating 45-day-old plantlets of 'Silk' (AAB, susceptible) in a double-tray system. Symptoms were observed in plants grown in both substrates, but highest incidence occurred in washed river sand. Low infection rates were observed when using conidial suspension from PDA-grown colonies. By contrast, inocula from stressed colonies and CMS caused consistent symptom expression. Using washed river sand as substrate and inoculum from PDA-grown stressed colonies and/or Foc-colonised CMS, plantlets of the cultivares 'Tropical' (AAAB) and 'Thap Maeo' (AAB) (field intermediate resistance) were challenged. Plantlets of 'Silk' and 'Grande Naine' (AAA) were used as susceptible and resistant controls, respectively. While the incubation period in Silk was 13 days after inoculation (dai), in 'Tropical' and 'Thap Maeo' initial symptoms were only observed at 17 dai. No symptoms were observed in 'Grande Naine'. The disease progress evaluated based on external symptoms and rhizome discoloration scales allowed cultivars discrimination according to resistance levels. Since experiments were repeated three times with similar results, our research suggests that the method here described could be suitable for early detection of banana genotypes resistant to Fusarium wilt. MenosAmong the major constrains to banana breeding for Fusarium wilt resistance is the long period necessary for evaluations in the field and the lack of an effective method for early detection of resistant genotypes. This work aimed to establish a screening method for Fusarium wilt resistance under greenhouse conditions and to validate its reliability by challenging cultivars with different levels of resistance. In a firts step, two types of substrates (vermiculite and washed river sand) and three inoculum sources (conidial suspension from 1- week-old colonies grown in potato dextrose agar (PDA), conidial suspension produced after stress of 1-week-old colonies and Foc-colonised corn meal-sand (CMS) medium) were studied by inoculating 45-day-old plantlets of 'Silk' (AAB, susceptible) in a double-tray system. Symptoms were observed in plants grown in both substrates, but highest incidence occurred in washed river sand. Low infection rates were observed when using conidial suspension from PDA-grown colonies. By contrast, inocula from stressed colonies and CMS caused consistent symptom expression. Using washed river sand as substrate and inoculum from PDA-grown stressed colonies and/or Foc-colonised CMS, plantlets of the cultivares 'Tropical' (AAAB) and 'Thap Maeo' (AAB) (field intermediate resistance) were challenged. Plantlets of 'Silk' and 'Grande Naine' (AAA) were used as susceptible and resistant controls, respectively. While the incubation period in Silk was 13 days after inoc... Mostrar Tudo |
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Thesagro: |
Banana; Fusariose; Genótipo. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02656naa a2200205 a 4500
001 1655784
005 2010-04-14
008 2009 bl uuuu u00u1 u #d
100 1 $aRIBEIRO, L. R.
245 $aDiscrimination of banana genotypes for Fusarium wilt resistance in greenhouse.
260 $c2009
520 $aAmong the major constrains to banana breeding for Fusarium wilt resistance is the long period necessary for evaluations in the field and the lack of an effective method for early detection of resistant genotypes. This work aimed to establish a screening method for Fusarium wilt resistance under greenhouse conditions and to validate its reliability by challenging cultivars with different levels of resistance. In a firts step, two types of substrates (vermiculite and washed river sand) and three inoculum sources (conidial suspension from 1- week-old colonies grown in potato dextrose agar (PDA), conidial suspension produced after stress of 1-week-old colonies and Foc-colonised corn meal-sand (CMS) medium) were studied by inoculating 45-day-old plantlets of 'Silk' (AAB, susceptible) in a double-tray system. Symptoms were observed in plants grown in both substrates, but highest incidence occurred in washed river sand. Low infection rates were observed when using conidial suspension from PDA-grown colonies. By contrast, inocula from stressed colonies and CMS caused consistent symptom expression. Using washed river sand as substrate and inoculum from PDA-grown stressed colonies and/or Foc-colonised CMS, plantlets of the cultivares 'Tropical' (AAAB) and 'Thap Maeo' (AAB) (field intermediate resistance) were challenged. Plantlets of 'Silk' and 'Grande Naine' (AAA) were used as susceptible and resistant controls, respectively. While the incubation period in Silk was 13 days after inoculation (dai), in 'Tropical' and 'Thap Maeo' initial symptoms were only observed at 17 dai. No symptoms were observed in 'Grande Naine'. The disease progress evaluated based on external symptoms and rhizome discoloration scales allowed cultivars discrimination according to resistance levels. Since experiments were repeated three times with similar results, our research suggests that the method here described could be suitable for early detection of banana genotypes resistant to Fusarium wilt.
650 $aBanana
650 $aFusariose
650 $aGenótipo
700 1 $aAMORIM, E. P.
700 1 $aCORDEIRO, Z. M.
700 1 $aSILVA, S. O.
700 1 $aDITA, M. A.
773 $tIn: ISHS/PROMUSA BANANA SYMPOSIUM, 2009, Guangzhou, China. Global perspectives on asian challenges: programme and abstracts. Guangzhou: ISHS: Promusa, 2009. p. 46.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
18/09/2008 |
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Data da última atualização: |
24/05/2018 |
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Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
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Autoria: |
CANTÃO, F. R. O.; MAGALHAES, P. C.; ALMEIDA, I. F.; SOARES, M. O.; ROCHA, M. C.; SOUZA, T. C. de; VICENT, M. L. |
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Afiliação: |
Fernando R. de O. Cantão, University of Illinois; PAULO CESAR MAGALHAES, CNPMS; Isis F. Almeida, UFV; Marcelo O. Soares, UFV; Michel C. da Rocha, UFV; Thiago C. de Souza, UFLA; Micahel Leroy Vincent, University of Illinois. |
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Título: |
Avaliação da morfologia radicular de genótipos de milho sob estresse de fósoforo através da analise de imagens digitais. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: CONGRESSO NACIONAL DE MILHO E SORGO, 27.; SIMPOSIO BRASILEIRO SOBRE A LAGARTA-DO-CARTUCHO, SPODOPTERA FRUGIPERDA, 3.; WORKSHOP SOBRE MANEJO E ETIOLOGIA DA MANCHA BRANCA DO MILHO, 2008, Londrina. Agroenergia, produção de alimentos e mudanças climáticas: desafios para milho e sorgo: trabalhos e palestras. [Londrina]: IAPAR; [Sete Lagoas]: Embrapa Milho e Sorgo, 2008. |
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Descrição Física: |
1 CD-ROM. |
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Idioma: |
Português |
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Palavras-Chave: |
Estresse; Sistema radicular WinRhizo. |
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Thesagro: |
Fósforo; Zea Mays. |
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Categoria do assunto: |
S Ciências Biológicas |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/30108/1/Avaliacao-morfologia.pdf
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Marc: |
LEADER 01041nam a2200229 a 4500
001 1491245
005 2018-05-24
008 2008 bl uuuu u00u1 u #d
100 1 $aCANTÃO, F. R. O.
245 $aAvaliação da morfologia radicular de genótipos de milho sob estresse de fósoforo através da analise de imagens digitais.$h[electronic resource]
260 $aIn: CONGRESSO NACIONAL DE MILHO E SORGO, 27.; SIMPOSIO BRASILEIRO SOBRE A LAGARTA-DO-CARTUCHO, SPODOPTERA FRUGIPERDA, 3.; WORKSHOP SOBRE MANEJO E ETIOLOGIA DA MANCHA BRANCA DO MILHO, 2008, Londrina. Agroenergia, produção de alimentos e mudanças climáticas: desafios para milho e sorgo: trabalhos e palestras. [Londrina]: IAPAR; [Sete Lagoas]: Embrapa Milho e Sorgo$c2008
300 $c1 CD-ROM.
650 $aFósforo
650 $aZea Mays
653 $aEstresse
653 $aSistema radicular WinRhizo
700 1 $aMAGALHAES, P. C.
700 1 $aALMEIDA, I. F.
700 1 $aSOARES, M. O.
700 1 $aROCHA, M. C.
700 1 $aSOUZA, T. C. de
700 1 $aVICENT, M. L.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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