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Registro Completo |
Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
24/04/2007 |
Data da última atualização: |
24/04/2007 |
Autoria: |
MENDONÇA, A. R. de; SILVA, G. F. da; OLIVEIRA, J. T. da S.; NOGUEIRA, G. S.; ASSIS, A. L. de. |
Título: |
Avaliação de funções de afilamento visando a otimização de fustes de Eucalyptus sp. para multiprodutos. |
Ano de publicação: |
2007 |
Fonte/Imprenta: |
Cerne, Lavras, v. 13, n. 1, p. 71-82, jan./mar. 2007. |
Idioma: |
Português |
Palavras-Chave: |
Altura comercial; Volume comercial. |
Thesaurus Nal: |
Eucalyptus. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00602naa a2200193 a 4500 001 1284372 005 2007-04-24 008 2007 bl uuuu u00u1 u #d 100 1 $aMENDONÇA, A. R. de 245 $aAvaliação de funções de afilamento visando a otimização de fustes de Eucalyptus sp. para multiprodutos. 260 $c2007 650 $aEucalyptus 653 $aAltura comercial 653 $aVolume comercial 700 1 $aSILVA, G. F. da 700 1 $aOLIVEIRA, J. T. da S. 700 1 $aNOGUEIRA, G. S. 700 1 $aASSIS, A. L. de 773 $tCerne, Lavras$gv. 13, n. 1, p. 71-82, jan./mar. 2007.
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Embrapa Florestas (CNPF) |
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Registro Completo
Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
Data corrente: |
28/10/2015 |
Data da última atualização: |
18/05/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
CABRAL, P. G. C.; MACIEL-ZAMBOLIM, E.; OLIVEIRA, S. A. S. de; CAIXETA, E. T.; ZAMBOLIM, L. |
Afiliação: |
P. G. C. CABRAL, UFV; E. MACIEL-ZAMBOLIM, UFV; SAULO ALVES SANTOS DE OLIVEIRA, CNPMF; EVELINE TEIXEIRA CAIXETA, SAPC; L. ZAMBOLIM, UFV. |
Título: |
Genetic diversity and structure of Hemileia vastatrix populations on Coffea spp. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
Plant Pathology, 2015. |
ISSN: |
1365-3059 |
DOI: |
10.1111/ppa.12411 |
Idioma: |
Português |
Conteúdo: |
Coffee leaf rust is the most limiting disease for coffee cultivation in Brazil. Despite its importance, relatively little is known about the genetic diversity of Hemileia vastatrix, the rust causal agent. In this work, the DNA from 112 monopustule isolates from different geographic locations and coffee genotypes were analysed by amplified fragment length polymorphisms (AFLP). The objectives were to assess the influence of the host and geographic origin on the diversity and population differentiation in H. vastatrix. The fungal population showed a low level of genotypic diversity. Gene diversity (h) was 0027 and the hypothesis of random mating in the total population was rejected, but evidence for recombination was found for two subpopulations (São Paulo and Parana). The analysis of molecular variance revealed that 90% of the genetic distribution of the pathogen occurs among isolates within the subpopulation (states or host of origin). There was no correlation between geographic and genetic distance (r = 0024, P = 074), which together with the high number of migrants and the low degree of differentiation in populations of H. vastatrix, is consistent with the fact that the inoculum is probably easily dispersed by wind over long distances, allowing dispersal of the pathogen among coffee growing areas in Brazil. Therefore, it is difficult to predict the durability of resistant sources to coffee rust. The recommendation for the breeding programmes is thus to incorporate multigenic resistance as a control strategy. MenosCoffee leaf rust is the most limiting disease for coffee cultivation in Brazil. Despite its importance, relatively little is known about the genetic diversity of Hemileia vastatrix, the rust causal agent. In this work, the DNA from 112 monopustule isolates from different geographic locations and coffee genotypes were analysed by amplified fragment length polymorphisms (AFLP). The objectives were to assess the influence of the host and geographic origin on the diversity and population differentiation in H. vastatrix. The fungal population showed a low level of genotypic diversity. Gene diversity (h) was 0027 and the hypothesis of random mating in the total population was rejected, but evidence for recombination was found for two subpopulations (São Paulo and Parana). The analysis of molecular variance revealed that 90% of the genetic distribution of the pathogen occurs among isolates within the subpopulation (states or host of origin). There was no correlation between geographic and genetic distance (r = 0024, P = 074), which together with the high number of migrants and the low degree of differentiation in populations of H. vastatrix, is consistent with the fact that the inoculum is probably easily dispersed by wind over long distances, allowing dispersal of the pathogen among coffee growing areas in Brazil. Therefore, it is difficult to predict the durability of resistant sources to coffee rust. The recommendation for the breeding programmes is thus to incorporate multigeni... Mostrar Tudo |
Thesagro: |
Café; Variação genética. |
Thesaurus NAL: |
Coffea. |
Categoria do assunto: |
G Melhoramento Genético |
Marc: |
LEADER 02168naa a2200229 a 4500 001 2027450 005 2023-05-18 008 2015 bl uuuu u00u1 u #d 022 $a1365-3059 024 7 $a10.1111/ppa.12411$2DOI 100 1 $aCABRAL, P. G. C. 245 $aGenetic diversity and structure of Hemileia vastatrix populations on Coffea spp.$h[electronic resource] 260 $c2015 520 $aCoffee leaf rust is the most limiting disease for coffee cultivation in Brazil. Despite its importance, relatively little is known about the genetic diversity of Hemileia vastatrix, the rust causal agent. In this work, the DNA from 112 monopustule isolates from different geographic locations and coffee genotypes were analysed by amplified fragment length polymorphisms (AFLP). The objectives were to assess the influence of the host and geographic origin on the diversity and population differentiation in H. vastatrix. The fungal population showed a low level of genotypic diversity. Gene diversity (h) was 0027 and the hypothesis of random mating in the total population was rejected, but evidence for recombination was found for two subpopulations (São Paulo and Parana). The analysis of molecular variance revealed that 90% of the genetic distribution of the pathogen occurs among isolates within the subpopulation (states or host of origin). There was no correlation between geographic and genetic distance (r = 0024, P = 074), which together with the high number of migrants and the low degree of differentiation in populations of H. vastatrix, is consistent with the fact that the inoculum is probably easily dispersed by wind over long distances, allowing dispersal of the pathogen among coffee growing areas in Brazil. Therefore, it is difficult to predict the durability of resistant sources to coffee rust. The recommendation for the breeding programmes is thus to incorporate multigenic resistance as a control strategy. 650 $aCoffea 650 $aCafé 650 $aVariação genética 700 1 $aMACIEL-ZAMBOLIM, E. 700 1 $aOLIVEIRA, S. A. S. de 700 1 $aCAIXETA, E. T. 700 1 $aZAMBOLIM, L. 773 $tPlant Pathology, 2015.
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