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Registro Completo |
Biblioteca(s): |
Embrapa Hortaliças. |
Data corrente: |
19/11/2001 |
Data da última atualização: |
19/11/2001 |
Autoria: |
SOUZA, C. M. de; PINTO, J. E. B. P.; RODRIGUES, B. M.; MORAIS, A. R. de; ARRIGONI-BLANK, M. de F. |
Título: |
Influência dos fatores físicos na regeneração de brotos em repolho. |
Ano de publicação: |
1999 |
Fonte/Imprenta: |
Ciência e Agrotecnologia, Lavras, v. 23, n. 4, p. 831-836, out./dez. 1999. |
Idioma: |
Português |
Palavras-Chave: |
Shoot regeneration. |
Thesagro: |
Brassica Oleracea Capitata; Cultura de Tecido; Meio de Cultura; Regeneração; Repolho. |
Thesaurus Nal: |
cabbage; culture media; in vitro culture; tissue culture. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00813naa a2200277 a 4500 001 1769318 005 2001-11-19 008 1999 bl uuuu u00u1 u #d 100 1 $aSOUZA, C. M. de 245 $aInfluência dos fatores físicos na regeneração de brotos em repolho. 260 $c1999 650 $acabbage 650 $aculture media 650 $ain vitro culture 650 $atissue culture 650 $aBrassica Oleracea Capitata 650 $aCultura de Tecido 650 $aMeio de Cultura 650 $aRegeneração 650 $aRepolho 653 $aShoot regeneration 700 1 $aPINTO, J. E. B. P. 700 1 $aRODRIGUES, B. M. 700 1 $aMORAIS, A. R. de 700 1 $aARRIGONI-BLANK, M. de F. 773 $tCiência e Agrotecnologia, Lavras$gv. 23, n. 4, p. 831-836, out./dez. 1999.
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Embrapa Hortaliças (CNPH) |
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![](/consulta/web/img/deny.png) | Acesso ao texto completo restrito à biblioteca da Embrapa Mandioca e Fruticultura. Para informações adicionais entre em contato com cnpmf.biblioteca@embrapa.br. |
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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