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Registro Completo |
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
21/07/1993 |
Data da última atualização: |
13/12/2006 |
Autoria: |
TOLEDO, J. F. F. de. |
Afiliação: |
EMBRAPA-CNPSo. Londrina, PR. |
Título: |
Genetica quantitativa das caracteristicas de interesse do melhoramento da soja. |
Ano de publicação: |
1993 |
Fonte/Imprenta: |
In: EMBRAPA. Centro Nacional de Pesquisa de Soja (Londrina, PR). Resultados de pesquisa de soja 1989/90. Londrina, 1993. |
Páginas: |
p.260-263. |
Série: |
(EMBRAPA-CNPSo. Documentos, 58). |
Idioma: |
Português |
Palavras-Chave: |
Brasil; Genetica quantitativa; Parana; Soybean. |
Thesagro: |
Melhoramento; Soja. |
Thesaurus Nal: |
Brazil; breeding; quantitative genetics. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00732naa a2200241 a 4500 001 1455007 005 2006-12-13 008 1993 bl uuuu u00u1 u #d 100 1 $aTOLEDO, J. F. F. de 245 $aGenetica quantitativa das caracteristicas de interesse do melhoramento da soja. 260 $c1993 300 $ap.260-263. 490 $a(EMBRAPA-CNPSo. Documentos, 58). 650 $aBrazil 650 $abreeding 650 $aquantitative genetics 650 $aMelhoramento 650 $aSoja 653 $aBrasil 653 $aGenetica quantitativa 653 $aParana 653 $aSoybean 773 $tIn: EMBRAPA. Centro Nacional de Pesquisa de Soja (Londrina, PR). Resultados de pesquisa de soja 1989/90. Londrina, 1993.
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Embrapa Soja (CNPSO) |
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Registro Completo
Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
Data corrente: |
20/09/2018 |
Data da última atualização: |
28/09/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
B - 1 |
Autoria: |
SANTIAGO, C, H.; SANTANA, M. P.; CAIRO JUNIOR, L. R.; OLIVEIRA, S. A. S. de; OLIVEIRA, E. J. de. |
Afiliação: |
CAMILA HOHENFELD SANTIAGO, UFRB; MARIANA PEREIRA SANTANA, UFRB; LUIZ RODRIGUEZ CAIRO JUNIOR, UFRB; SAULO ALVES SANTOS DE OLIVEIRA, CNPMF; EDER JORGE DE OLIVEIRA, CNPMF. |
Título: |
Methodologies for selecting cassava with resistance to dry and black root rot under controlled conditions. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
Bragantia, Campinas, v. 77, n. 3, p.440-451, 2018. |
Idioma: |
Inglês |
Conteúdo: |
Cassava root rot diseases such as dry and black root rot are listed among the major threats, since its affect the main product (tuberous roots), causing a progressive decline in yield and affecting subsequent crop cycles, being the use of resistant varieties the most reliable control measure on field level. The objective of this study was to identify inoculation methods for the early evaluation of genotypes, considering the level of resistance to dry (DRR) and black (BRR) root rot diseases. Different methodologies and plant tissues were evaluated, based on the immersion of cassava tissues (roots and stem cuttings), soil infestation, and inoculation of detached tissues (leaves, tuberous roots and stem cuttings). The following parameters were evaluated for inoculations based on tissue immersion: disease index (ω); aerial part weight (g); fresh weight of the roots (g); and volume (cm3). For the inoculations on detached tissues, the percentage of lesioned area was determined. Immersion methods for roots and lesioned stems did not show typical symptoms of DRR and BRR during the two-month evaluation period. The soil infestation method did not differ from the stem immersion method as to the reduction of aerial part weight and the disease index, whereas both can be recommended for resistance selection trials. There was a positive correlation between the BRR and DRR data for the stem inoculation (r = 0.94, p = 0.001) and for DRR in the peel and root pulp (r = 0.73, p = 0.05). Therefore, the resistance within each tissue is apparently independent and should be compared with the behavior of the genotypes in the field. MenosCassava root rot diseases such as dry and black root rot are listed among the major threats, since its affect the main product (tuberous roots), causing a progressive decline in yield and affecting subsequent crop cycles, being the use of resistant varieties the most reliable control measure on field level. The objective of this study was to identify inoculation methods for the early evaluation of genotypes, considering the level of resistance to dry (DRR) and black (BRR) root rot diseases. Different methodologies and plant tissues were evaluated, based on the immersion of cassava tissues (roots and stem cuttings), soil infestation, and inoculation of detached tissues (leaves, tuberous roots and stem cuttings). The following parameters were evaluated for inoculations based on tissue immersion: disease index (ω); aerial part weight (g); fresh weight of the roots (g); and volume (cm3). For the inoculations on detached tissues, the percentage of lesioned area was determined. Immersion methods for roots and lesioned stems did not show typical symptoms of DRR and BRR during the two-month evaluation period. The soil infestation method did not differ from the stem immersion method as to the reduction of aerial part weight and the disease index, whereas both can be recommended for resistance selection trials. There was a positive correlation between the BRR and DRR data for the stem inoculation (r = 0.94, p = 0.001) and for DRR in the peel and root pulp (r = 0.73, p = 0.05). Th... Mostrar Tudo |
Thesagro: |
Doença de Planta; Mandioca; Manihot Esculenta. |
Thesaurus NAL: |
Cassava; Inoculation methods; Neoscytalidium; Root diseases. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/183295/1/Methodologies-for-selecting.pdf
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Marc: |
LEADER 02398naa a2200253 a 4500 001 2096094 005 2018-09-28 008 2018 bl uuuu u00u1 u #d 100 1 $aSANTIAGO, C, H. 245 $aMethodologies for selecting cassava with resistance to dry and black root rot under controlled conditions.$h[electronic resource] 260 $c2018 520 $aCassava root rot diseases such as dry and black root rot are listed among the major threats, since its affect the main product (tuberous roots), causing a progressive decline in yield and affecting subsequent crop cycles, being the use of resistant varieties the most reliable control measure on field level. The objective of this study was to identify inoculation methods for the early evaluation of genotypes, considering the level of resistance to dry (DRR) and black (BRR) root rot diseases. Different methodologies and plant tissues were evaluated, based on the immersion of cassava tissues (roots and stem cuttings), soil infestation, and inoculation of detached tissues (leaves, tuberous roots and stem cuttings). The following parameters were evaluated for inoculations based on tissue immersion: disease index (ω); aerial part weight (g); fresh weight of the roots (g); and volume (cm3). For the inoculations on detached tissues, the percentage of lesioned area was determined. Immersion methods for roots and lesioned stems did not show typical symptoms of DRR and BRR during the two-month evaluation period. The soil infestation method did not differ from the stem immersion method as to the reduction of aerial part weight and the disease index, whereas both can be recommended for resistance selection trials. There was a positive correlation between the BRR and DRR data for the stem inoculation (r = 0.94, p = 0.001) and for DRR in the peel and root pulp (r = 0.73, p = 0.05). Therefore, the resistance within each tissue is apparently independent and should be compared with the behavior of the genotypes in the field. 650 $aCassava 650 $aInoculation methods 650 $aNeoscytalidium 650 $aRoot diseases 650 $aDoença de Planta 650 $aMandioca 650 $aManihot Esculenta 700 1 $aSANTANA, M. P. 700 1 $aCAIRO JUNIOR, L. R. 700 1 $aOLIVEIRA, S. A. S. de 700 1 $aOLIVEIRA, E. J. de 773 $tBragantia, Campinas$gv. 77, n. 3, p.440-451, 2018.
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Embrapa Mandioca e Fruticultura (CNPMF) |
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