| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Meio Ambiente. |
|
Data corrente: |
02/12/2016 |
|
Data da última atualização: |
02/12/2016 |
|
Autoria: |
VALARINI, P. J.; FRIGHETTO, R. T. S.; TOKESHI, H.; OLIVERA, D. A. |
|
Afiliação: |
CNPMA; ROSA TOYOKO SHIRAISHI FRIGHETTO, CNPMA; H. TOKESHI; D. A. OLIVERA. |
|
Título: |
Action of effective microorganisms (em) in soils of intensive agricultural systems in Brazil. |
|
Ano de publicação: |
1997 |
|
Fonte/Imprenta: |
In: INTERNATIONAL CONFERENCE ON KYUSEI NATURE FARMING, 5., 1997, Bangkok, Thailand. |
|
Páginas: |
15-16 |
|
Idioma: |
Português |
|
Palavras-Chave: |
Effective microorganisms; Intensive agricultural systems; Soils. |
|
Thesaurus Nal: |
Brazil. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/151149/1/1997AP028-Frighetto-Action-15191.PDF
|
|
Marc: |
LEADER 00658naa a2200205 a 4500
001 2057828
005 2016-12-02
008 1997 bl uuuu u00u1 u #d
100 1 $aVALARINI, P. J.
245 $aAction of effective microorganisms (em) in soils of intensive agricultural systems in Brazil.$h[electronic resource]
260 $c1997
300 $a15-16
650 $aBrazil
653 $aEffective microorganisms
653 $aIntensive agricultural systems
653 $aSoils
700 1 $aFRIGHETTO, R. T. S.
700 1 $aTOKESHI, H.
700 1 $aOLIVERA, D. A.
773 $tIn: INTERNATIONAL CONFERENCE ON KYUSEI NATURE FARMING, 5., 1997, Bangkok, Thailand.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Meio Ambiente (CNPMA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Café. |
|
Data corrente: |
18/03/2016 |
|
Data da última atualização: |
18/03/2016 |
|
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: |
2016 |
|
Fonte/Imprenta: |
Plant Pathology, v. 65, n. 2, p.196-204, Feb, 2016. |
|
DOI: |
10.1111/ppa.12411 |
|
Idioma: |
Inglês |
|
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 |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/141425/1/Genetic-diversity.pdf
|
|
Marc: |
LEADER 02171naa a2200217 a 4500
001 2041410
005 2016-03-18
008 2016 bl uuuu u00u1 u #d
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 $c2016
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 $tPlant Pathology$gv. 65, n. 2, p.196-204, Feb, 2016.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Café (CNPCa) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
