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Registro Completo |
Biblioteca(s): |
Embrapa Amazônia Oriental; Embrapa Florestas. |
Data corrente: |
19/02/2008 |
Data da última atualização: |
25/02/2015 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
LACERDA, A. E. B. de; KANASHIRO, M.; SEBBENN, A. M. |
Afiliação: |
André Eduardo Biscaia de Lacerda, Embrapa Florestas; Milton Kanashiro, Embrapa Amazônia Oriental; Alexandre Magno Sebbenn, Instituto Florestal de São Paulo. |
Título: |
Effects of reduced impact logging on genetic diversity and spatial genetic structure of a Hymenaea courbaril population in the Brazilian Amazon Forest |
Ano de publicação: |
2008 |
Fonte/Imprenta: |
Forest Ecology and Management, Amsterdam, v. 255, p. 1034-1043, 2008. |
Idioma: |
Inglês |
Conteúdo: |
Levels of genetic diversity, inbreeding, and spatial genetic structure were investigated at different ontogenic stages for a population of Hymanaea courbaril, before and after Reduced Impact Logging (RIL) was applied, in a 546-ha plot in the Tapajo´s National Forest, in the Brazilian Amazon. The multilocus genotype of nine microsatellites loci was determined for 74 juveniles (dbh < 10 cm), 59 subadults (10 dbh < 50 cm), 76 adults (50 dbh < 100 cm), and 54 large adult trees (dbh 100 cm). The results show a clear tendency of increase in the levels of observed heterozygosity and decrease in the fixation index between juveniles and large adult trees. Although these results were not significant (t-test, P > 0.05), they suggest the occurrence of inbreeding depression. All ontogenic stages showed spatial genetic structure at short distance classes (<200 m), but the levels are not constant among the subpopulations. The harvest of 61% of the reproductive trees caused a loss of 37 (25%) low frequency and rare alleles from the mature population. However, 24 of the ‘‘lost’’ alleles are present in juvenile and subadult populations which might allow their reintroduction into the population when these trees become reproductive. RIL also caused a reduction of the observed and expected heterozygosity of the unlogged reproductive population in comparison to the reproductive population, although these results were not statistically significant (t-test, P > 0.05). Logging also reduced the distance of the spatial genetic structure in the reproductive population from about 800 to 200 m. In general, our results indicate that RIL affected the gene pool and spatial genetic structure of the reproductive population. # 2007 Elsevier B.V. All rights reserved. MenosLevels of genetic diversity, inbreeding, and spatial genetic structure were investigated at different ontogenic stages for a population of Hymanaea courbaril, before and after Reduced Impact Logging (RIL) was applied, in a 546-ha plot in the Tapajo´s National Forest, in the Brazilian Amazon. The multilocus genotype of nine microsatellites loci was determined for 74 juveniles (dbh < 10 cm), 59 subadults (10 dbh < 50 cm), 76 adults (50 dbh < 100 cm), and 54 large adult trees (dbh 100 cm). The results show a clear tendency of increase in the levels of observed heterozygosity and decrease in the fixation index between juveniles and large adult trees. Although these results were not significant (t-test, P > 0.05), they suggest the occurrence of inbreeding depression. All ontogenic stages showed spatial genetic structure at short distance classes (<200 m), but the levels are not constant among the subpopulations. The harvest of 61% of the reproductive trees caused a loss of 37 (25%) low frequency and rare alleles from the mature population. However, 24 of the ‘‘lost’’ alleles are present in juvenile and subadult populations which might allow their reintroduction into the population when these trees become reproductive. RIL also caused a reduction of the observed and expected heterozygosity of the unlogged reproductive population in comparison to the reproductive population, although these results were not statistically significant (t-test, P > 0.05). Logging also reduced the dista... Mostrar Tudo |
Palavras-Chave: |
Brasil; Hymrnaea courbaril; Impact. |
Thesagro: |
Árvore Angiosperma; Genética; Jatobá. |
Thesaurus Nal: |
Amazonia. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02507naa a2200229 a 4500 001 1304067 005 2015-02-25 008 2008 bl uuuu u00u1 u #d 100 1 $aLACERDA, A. E. B. de 245 $aEffects of reduced impact logging on genetic diversity and spatial genetic structure of a Hymenaea courbaril population in the Brazilian Amazon Forest$h[electronic resource] 260 $c2008 520 $aLevels of genetic diversity, inbreeding, and spatial genetic structure were investigated at different ontogenic stages for a population of Hymanaea courbaril, before and after Reduced Impact Logging (RIL) was applied, in a 546-ha plot in the Tapajo´s National Forest, in the Brazilian Amazon. The multilocus genotype of nine microsatellites loci was determined for 74 juveniles (dbh < 10 cm), 59 subadults (10 dbh < 50 cm), 76 adults (50 dbh < 100 cm), and 54 large adult trees (dbh 100 cm). The results show a clear tendency of increase in the levels of observed heterozygosity and decrease in the fixation index between juveniles and large adult trees. Although these results were not significant (t-test, P > 0.05), they suggest the occurrence of inbreeding depression. All ontogenic stages showed spatial genetic structure at short distance classes (<200 m), but the levels are not constant among the subpopulations. The harvest of 61% of the reproductive trees caused a loss of 37 (25%) low frequency and rare alleles from the mature population. However, 24 of the ‘‘lost’’ alleles are present in juvenile and subadult populations which might allow their reintroduction into the population when these trees become reproductive. RIL also caused a reduction of the observed and expected heterozygosity of the unlogged reproductive population in comparison to the reproductive population, although these results were not statistically significant (t-test, P > 0.05). Logging also reduced the distance of the spatial genetic structure in the reproductive population from about 800 to 200 m. In general, our results indicate that RIL affected the gene pool and spatial genetic structure of the reproductive population. # 2007 Elsevier B.V. All rights reserved. 650 $aAmazonia 650 $aÁrvore Angiosperma 650 $aGenética 650 $aJatobá 653 $aBrasil 653 $aHymrnaea courbaril 653 $aImpact 700 1 $aKANASHIRO, M. 700 1 $aSEBBENN, A. M. 773 $tForest Ecology and Management, Amsterdam$gv. 255, p. 1034-1043, 2008.
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Registro original: |
Embrapa Florestas (CNPF) |
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Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
16/08/2016 |
Data da última atualização: |
27/02/2024 |
Tipo da produção científica: |
Folder/Folheto/Cartilha |
Autoria: |
MELO, C. L. P. de; PIPOLO, A. E.; MOREIRA, J. U. V.; LIMA, D. de; FOLONI, J. S. S.; MIRANDA, L. C.; PETEK, M. R.; BORGES, R. de S.; GOMIDE, F. B.; DALBOSCO, M.; DENGLER, R. U. |
Afiliação: |
CARLOS LASARO PEREIRA DE MELO, CNPSO; ANTONIO EDUARDO PIPOLO, CNPSO; JOSE UBIRAJARA VIEIRA MOREIRA, CNPSO; DIVANIA DE LIMA, CNPSO; JOSE SALVADOR SIMONETI FOLONI, CNPSO; LUIZ CARLOS MIRANDA, SPM - E. Londrina; MARCOS RAFAEL PETEK, SPM - E. Londrina; ROGERIO DE SA BORGES, SPM - E. Londrina; FERNANDO BERNARDO GOMIDE, Fundação Meridional; MILTON DALBOSCO, Fundação Meridional; RALF UDO DENGLER, Fundação Meridional. |
Título: |
Cultivares de soja: macrorregiões 1, 2 e 3 centro-sul do Brasil. |
Ano de publicação: |
2016 |
Fonte/Imprenta: |
Londrina: Embrapa Soja, 2016. |
Páginas: |
64 p. |
Descrição Física: |
il. color. |
Idioma: |
Português |
Notas: |
Catálogo 03 publicado em agosto de 2016. |
Conteúdo: |
Grupo de maturidade relativa. Indicação de cultivares por região edafoclimática. Época de semeadura. População de plantas e densidade de semeadura. Peso médio de sementes. Mancha olho-de-rã. Cancro da haste. Podridão radicular de Phytophthora. Oídio. Nematoides de galhas. Cultivares de soja convencional. Cultivares de soja transgênica (RR). Cultivares de soja transgênica (Intacta RR2 PROTM). Cultivares de soja transgênica (Cultivance). |
Thesagro: |
Soja; Variedade. |
Thesaurus NAL: |
Cultivars; Soybeans. |
Categoria do assunto: |
-- G Melhoramento Genético |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/146447/1/catalogo-soja.pdf
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Marc: |
LEADER 01251nam a2200301 a 4500 001 2051023 005 2024-02-27 008 2016 bl uuuu u0uu1 u #d 100 1 $aMELO, C. L. P. de 245 $aCultivares de soja$bmacrorregiões 1, 2 e 3 centro-sul do Brasil. 260 $aLondrina: Embrapa Soja$c2016 300 $a64 p.$cil. color. 500 $aCatálogo 03 publicado em agosto de 2016. 520 $aGrupo de maturidade relativa. Indicação de cultivares por região edafoclimática. Época de semeadura. População de plantas e densidade de semeadura. Peso médio de sementes. Mancha olho-de-rã. Cancro da haste. Podridão radicular de Phytophthora. Oídio. Nematoides de galhas. Cultivares de soja convencional. Cultivares de soja transgênica (RR). Cultivares de soja transgênica (Intacta RR2 PROTM). Cultivares de soja transgênica (Cultivance). 650 $aCultivars 650 $aSoybeans 650 $aSoja 650 $aVariedade 700 1 $aPIPOLO, A. E. 700 1 $aMOREIRA, J. U. V. 700 1 $aLIMA, D. de 700 1 $aFOLONI, J. S. S. 700 1 $aMIRANDA, L. C. 700 1 $aPETEK, M. R. 700 1 $aBORGES, R. de S. 700 1 $aGOMIDE, F. B. 700 1 $aDALBOSCO, M. 700 1 $aDENGLER, R. U.
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