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Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
27/04/2001 |
Data da última atualização: |
27/04/2001 |
Autoria: |
SANT'ANA, M. A. G.; MARTINS, G.; SALDANHA, L. K.; MATTOS, P. P. de. |
Afiliação: |
Mattos, P.P. de, pesquisadora da Embrapa Florestas. |
Título: |
Determinacion de parametros para trabajar la madera con sierra circular y tupi de mesa para Eucalyptus grandis. |
Ano de publicação: |
2000 |
Fonte/Imprenta: |
In: REUNION SOBRE INVESTIGACION Y DESARROLLO DE PRODUCTOS FORESTALES, 9.; CONGRESSO IBEROAMERICANO DE INVESTIGACION Y DESARROLLO DE PRODUCTOS FORESTALES, 1., 2000, Concepcion. Libro de resumenes. Concepcion: Universidad del Bio-Bio / Universidade de Concepcion, 2000. p.113. |
Idioma: |
Espanhol |
Notas: |
Resumo. |
Categoria do assunto: |
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Marc: |
LEADER 00714naa a2200157 a 4500 001 1301291 005 2001-04-27 008 2000 bl uuuu u00u1 u #d 100 1 $aSANT'ANA, M. A. G. 245 $aDeterminacion de parametros para trabajar la madera con sierra circular y tupi de mesa para Eucalyptus grandis. 260 $c2000 500 $aResumo. 700 1 $aMARTINS, G. 700 1 $aSALDANHA, L. K. 700 1 $aMATTOS, P. P. de 773 $tIn: REUNION SOBRE INVESTIGACION Y DESARROLLO DE PRODUCTOS FORESTALES, 9.; CONGRESSO IBEROAMERICANO DE INVESTIGACION Y DESARROLLO DE PRODUCTOS FORESTALES, 1., 2000, Concepcion. Libro de resumenes. Concepcion: Universidad del Bio-Bio / Universidade de Concepcion, 2000. p.113.
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Registro original: |
Embrapa Florestas (CNPF) |
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Registro Completo
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
03/09/2003 |
Data da última atualização: |
03/09/2003 |
Autoria: |
ALMEIDA, A. M. R.; ABDELNOOR, R. V.; ARIAS, C. A. A.; CARVALHO, V. P. JACOUD FILHO, D. S.; MARIN, S. R. R.; BENATO, L. C.; PINTO, M. C.; CARVALHO, C. G. P. |
Título: |
Genotypic diversity among brazilian isolates of Macrophomina phaseolina revealed by RAPD. |
Ano de publicação: |
2003 |
Fonte/Imprenta: |
Fitopatologia Brasileira, Brasília, v. 28, n. 3, p. 279-285, maio/jun. 2003. |
Idioma: |
Português |
Conteúdo: |
Macrophomina phaseolina has been considered one of the most prevalent soybean (Glycine max) pathogens in Brazil. No genetic resistance has been determined in soybean and very little is known about the genetic diversity of this pathogen in tropical and sub-tropical regions. Fifty-five isolates from soybean roots were collected in different regions and analyzed through RAPD for genetic diversity. The UPGMA cluster analysis for 74 loci scored permitted identification of three divergent groups with an average similarity of 99%, 92% and 88%, respectively. The three groups corresponded to 5.45%, 59.95% and 34.6%, respectively of all isolates used. A single plant had three different haplotypes, while 10.9% of the analyzed plants had two different haplotypes. In another study the genetic similarity was evaluated among isolates from different hosts [soybean, sorghum (Sorghum bicolor), sunflower (Helianthus annuus), cowpea (Vigna unguiculata), corn (Zea mays) and wheat (Triticum aestivum)] as well as two soil samples from native areas. Results showed that more divergent isolates originated from areas with a single crop. Isolates from areas with crop rotation were less divergent, showing high similarity values and consequently formed the largest group. Amplification of the ITS region using primers ITS1 and ITS4 produced only one DNA fragment of 620 bp. None of the isolates were differentiated through PCR-RFLP. Our results demonstrated genetic variability among Brazilian isolates of M. phaseolina and showed that one single root can harbor more than one haplotype. Moreover, cultivation with crop rotation tends to induce less specialization of the pathogen isolates. Knowledge of this variation may be useful in screening soybean genotypes for resistance to charcoal rot. MenosMacrophomina phaseolina has been considered one of the most prevalent soybean (Glycine max) pathogens in Brazil. No genetic resistance has been determined in soybean and very little is known about the genetic diversity of this pathogen in tropical and sub-tropical regions. Fifty-five isolates from soybean roots were collected in different regions and analyzed through RAPD for genetic diversity. The UPGMA cluster analysis for 74 loci scored permitted identification of three divergent groups with an average similarity of 99%, 92% and 88%, respectively. The three groups corresponded to 5.45%, 59.95% and 34.6%, respectively of all isolates used. A single plant had three different haplotypes, while 10.9% of the analyzed plants had two different haplotypes. In another study the genetic similarity was evaluated among isolates from different hosts [soybean, sorghum (Sorghum bicolor), sunflower (Helianthus annuus), cowpea (Vigna unguiculata), corn (Zea mays) and wheat (Triticum aestivum)] as well as two soil samples from native areas. Results showed that more divergent isolates originated from areas with a single crop. Isolates from areas with crop rotation were less divergent, showing high similarity values and consequently formed the largest group. Amplification of the ITS region using primers ITS1 and ITS4 produced only one DNA fragment of 620 bp. None of the isolates were differentiated through PCR-RFLP. Our results demonstrated genetic variability among Brazilian isolates of M. ... Mostrar Tudo |
Categoria do assunto: |
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URL: |
https://www.scielo.br/pdf/fb/v28n3/a09v28n3.pdf
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Marc: |
LEADER 02422naa a2200205 a 4500 001 1460324 005 2003-09-03 008 2003 bl uuuu u00u1 u #d 100 1 $aALMEIDA, A. M. R. 245 $aGenotypic diversity among brazilian isolates of Macrophomina phaseolina revealed by RAPD. 260 $c2003 520 $aMacrophomina phaseolina has been considered one of the most prevalent soybean (Glycine max) pathogens in Brazil. No genetic resistance has been determined in soybean and very little is known about the genetic diversity of this pathogen in tropical and sub-tropical regions. Fifty-five isolates from soybean roots were collected in different regions and analyzed through RAPD for genetic diversity. The UPGMA cluster analysis for 74 loci scored permitted identification of three divergent groups with an average similarity of 99%, 92% and 88%, respectively. The three groups corresponded to 5.45%, 59.95% and 34.6%, respectively of all isolates used. A single plant had three different haplotypes, while 10.9% of the analyzed plants had two different haplotypes. In another study the genetic similarity was evaluated among isolates from different hosts [soybean, sorghum (Sorghum bicolor), sunflower (Helianthus annuus), cowpea (Vigna unguiculata), corn (Zea mays) and wheat (Triticum aestivum)] as well as two soil samples from native areas. Results showed that more divergent isolates originated from areas with a single crop. Isolates from areas with crop rotation were less divergent, showing high similarity values and consequently formed the largest group. Amplification of the ITS region using primers ITS1 and ITS4 produced only one DNA fragment of 620 bp. None of the isolates were differentiated through PCR-RFLP. Our results demonstrated genetic variability among Brazilian isolates of M. phaseolina and showed that one single root can harbor more than one haplotype. Moreover, cultivation with crop rotation tends to induce less specialization of the pathogen isolates. Knowledge of this variation may be useful in screening soybean genotypes for resistance to charcoal rot. 700 1 $aABDELNOOR, R. V. 700 1 $aARIAS, C. A. A. 700 1 $aCARVALHO, V. P. JACOUD FILHO, D. S. 700 1 $aMARIN, S. R. R. 700 1 $aBENATO, L. C. 700 1 $aPINTO, M. C. 700 1 $aCARVALHO, C. G. P. 773 $tFitopatologia Brasileira, Brasília$gv. 28, n. 3, p. 279-285, maio/jun. 2003.
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Embrapa Soja (CNPSO) |
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