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Biblioteca(s): |
Embrapa Rondônia. |
Data corrente: |
03/12/2004 |
Data da última atualização: |
06/05/2011 |
Autoria: |
LEMOS FILHO, J. P. de. |
Título: |
Efeito do alumínio sobre os teores de alguns elementos minerais, sobre a fotossíntese e sobre a atividade de certas oxidases em sorgo (Sorghum bicolor L. Moench). |
Ano de publicação: |
1982 |
Fonte/Imprenta: |
Viçosa: UFV, 1982. |
Páginas: |
46 p. |
Série: |
(UFV. Tese Mestrado). |
Idioma: |
Português |
Conteúdo: |
A toxides de alumínio é fator limitante para o cresciemnto e desenvolvimento das plantas, sendo comum em solos com ph inferior a 5. Esse problema torna-se particularmente sério, quando o subsolo também é ácido, o que impede a utilização eficiente da técnica corretiv pela calagem. (FOY et alli, 1978). |
Palavras-Chave: |
sorgo-Alumínio-Composição Mineral-Fotossíntese. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00830nam a2200145 a 4500 001 1705614 005 2011-05-06 008 1982 bl uuuu m 00u1 u #d 100 1 $aLEMOS FILHO, J. P. de 245 $aEfeito do alumínio sobre os teores de alguns elementos minerais, sobre a fotossíntese e sobre a atividade de certas oxidases em sorgo (Sorghum bicolor L. Moench). 260 $aViçosa: UFV$c1982 300 $a46 p. 490 $a(UFV. Tese Mestrado). 520 $aA toxides de alumínio é fator limitante para o cresciemnto e desenvolvimento das plantas, sendo comum em solos com ph inferior a 5. Esse problema torna-se particularmente sério, quando o subsolo também é ácido, o que impede a utilização eficiente da técnica corretiv pela calagem. (FOY et alli, 1978). 653 $asorgo-Alumínio-Composição Mineral-Fotossíntese
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Embrapa Rondônia (CPAF-RO) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Agrossilvipastoril. Para informações adicionais entre em contato com cpamt.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Agrossilvipastoril. |
Data corrente: |
21/12/2016 |
Data da última atualização: |
07/03/2017 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
B - 1 |
Autoria: |
WADT, L. H. de O.; BALDONI, A. B.; SILVA, V. S.; CAMPOS, T. de; MARTINS, K.; AZEVEDO, V. C. R.; MATA, L. R. da; BOTIN, A. A.; HOOGERHEIDE, E. S. S.; TONINI, H.; SEBBENN, A. M. |
Afiliação: |
LUCIA HELENA DE OLIVEIRA WADT, CPAF-Rondonia; AISY BOTEGA BALDONI TARDIN, CPAMT; Universidade Federal do Acre; TATIANA DE CAMPOS, CPAF-Acre; Universidade Federal de São Carlos; VANIA CRISTINA RENNO AZEVEDO, Cenargen; LORENA RAMOS DA MATA, Cenargen; Universidade Federal de Mato Grosso; EULALIA SOLER SOBREIRA HOOGERHEIDE, CPAMT; HELIO TONINI, CPAMT; Instituto Florestal de São Paulo. |
Título: |
Mating system variation among populations, individuals and within and among fruits in Bertholletia excelsa. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
Silvae Genetica, Deutschland, v. 64, p. 5-6, 2015. |
Idioma: |
Português |
Conteúdo: |
The aim of this study was to investigate variation in mating system among three Brazilian Amazon populations of the tree Bertholletia excelsa with different levels of anthropogenic interventions. We collected open-pollinated seeds from one natural population, remnant trees dispersed in a pasture, and trees from a plantation. Outcrossing rate not varied among the populations and indicates that all seeds were originated from outcrossing (tm=1.0). Mating among relatives was significant higher in the plantation than forest and pasture populations,
probably due the fact that many trees are related in the plantation. Correlated mating was significantly higher in pasture (rp=0.47) and plantation (rp=0.51) than in the natural population (rp=0.22), suggesting that trees in natural population are pollinated by a higher number of pollen donors. The paternity correlation was significantly higher within (rp(w)=0.41) than among fruits (rp(a)=0.18), showing a higher probability to find full-sibs within than among fruits. The fixation index was generally lower in seed trees than in their seedlings, suggesting selection for heterozygous individuals from seedling to adult stages. Progeny arrays collected from the natural population had a lower proportion of pairwise full-sibs than in pasture and plantation and higher variance effective size (2.75) than trees in pasture (2.15) and plantations (2.22). Results highlight that seed collections for conservation, breeding and reforestation programs preferentially should be carried out in natural populations due low proportion highest variance effective size within progeny. MenosThe aim of this study was to investigate variation in mating system among three Brazilian Amazon populations of the tree Bertholletia excelsa with different levels of anthropogenic interventions. We collected open-pollinated seeds from one natural population, remnant trees dispersed in a pasture, and trees from a plantation. Outcrossing rate not varied among the populations and indicates that all seeds were originated from outcrossing (tm=1.0). Mating among relatives was significant higher in the plantation than forest and pasture populations,
probably due the fact that many trees are related in the plantation. Correlated mating was significantly higher in pasture (rp=0.47) and plantation (rp=0.51) than in the natural population (rp=0.22), suggesting that trees in natural population are pollinated by a higher number of pollen donors. The paternity correlation was significantly higher within (rp(w)=0.41) than among fruits (rp(a)=0.18), showing a higher probability to find full-sibs within than among fruits. The fixation index was generally lower in seed trees than in their seedlings, suggesting selection for heterozygous individuals from seedling to adult stages. Progeny arrays collected from the natural population had a lower proportion of pairwise full-sibs than in pasture and plantation and higher variance effective size (2.75) than trees in pasture (2.15) and plantations (2.22). Results highlight that seed collections for conservation, breeding and reforestation programs ... Mostrar Tudo |
Palavras-Chave: |
Castanheira. |
Thesagro: |
Acasalamento; Bertholletia Excelsa; Polinização; Reprodução. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02495naa a2200301 a 4500 001 2059096 005 2017-03-07 008 2015 bl --- 0-- u #d 100 1 $aWADT, L. H. de O. 245 $aMating system variation among populations, individuals and within and among fruits in Bertholletia excelsa.$h[electronic resource] 260 $c2015 520 $aThe aim of this study was to investigate variation in mating system among three Brazilian Amazon populations of the tree Bertholletia excelsa with different levels of anthropogenic interventions. We collected open-pollinated seeds from one natural population, remnant trees dispersed in a pasture, and trees from a plantation. Outcrossing rate not varied among the populations and indicates that all seeds were originated from outcrossing (tm=1.0). Mating among relatives was significant higher in the plantation than forest and pasture populations, probably due the fact that many trees are related in the plantation. Correlated mating was significantly higher in pasture (rp=0.47) and plantation (rp=0.51) than in the natural population (rp=0.22), suggesting that trees in natural population are pollinated by a higher number of pollen donors. The paternity correlation was significantly higher within (rp(w)=0.41) than among fruits (rp(a)=0.18), showing a higher probability to find full-sibs within than among fruits. The fixation index was generally lower in seed trees than in their seedlings, suggesting selection for heterozygous individuals from seedling to adult stages. Progeny arrays collected from the natural population had a lower proportion of pairwise full-sibs than in pasture and plantation and higher variance effective size (2.75) than trees in pasture (2.15) and plantations (2.22). Results highlight that seed collections for conservation, breeding and reforestation programs preferentially should be carried out in natural populations due low proportion highest variance effective size within progeny. 650 $aAcasalamento 650 $aBertholletia Excelsa 650 $aPolinização 650 $aReprodução 653 $aCastanheira 700 1 $aBALDONI, A. B. 700 1 $aSILVA, V. S. 700 1 $aCAMPOS, T. de 700 1 $aMARTINS, K. 700 1 $aAZEVEDO, V. C. R. 700 1 $aMATA, L. R. da 700 1 $aBOTIN, A. A. 700 1 $aHOOGERHEIDE, E. S. S. 700 1 $aTONINI, H. 700 1 $aSEBBENN, A. M. 773 $tSilvae Genetica, Deutschland$gv. 64, p. 5-6, 2015.
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