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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
06/05/1997 |
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Data da última atualização: |
06/05/1997 |
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Autoria: |
BIONDI, D.; REISSMAN, C. B. |
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Título: |
Estudo de amostragem para a analise quimica foliar do dedaleiro (Lafoensia pacari St. Hil.) na arborizacao urbana. |
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Ano de publicação: |
1992 |
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Fonte/Imprenta: |
Revista do Instituto Florestal, Sao Paulo, v.4, parte 2, p.601-604, 1992. |
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Idioma: |
Português |
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Notas: |
Trabalho apresentado no 2o. Congresso Nacional sobre Essencias Nativas, Sao Paulo, 1992. |
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Conteúdo: |
O estudo foi desenvolvido em 25 arvores de dedaleiro (Lafoensia pacari St. Hil) plantadas na calcada de uma rua arborizada. A coleta de folhas se deu em 3 posicoes da copa: base, meio e topo, com exposicao norte. Os elementos determinados na analise quimica foliar foram: N, P, K, Ca, Mg, Fe, Mn, Cu E Zn. Os resultados indicaram para P, K, Ca, Mg e Zn que qualquer posicao poderia ser tomada na coleta de folhas. E para N, Fe, Mn e Cu, a posicao do meio foi a mais representativa. Concluiu-se, baseado nos aspecto praticos de coleta e fisiologicos da arvore, que a melhor posicao e a do meio para determinacao de todos os nutrientes. |
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Palavras-Chave: |
Brasil; Curitiba; Lafoensia parcari; Parana. |
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Thesagro: |
Análise Foliar; Análise Química; Arborização; Dedaleiro. |
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Thesaurus Nal: |
analytical methods; Brazil; leaves; tissue analysis. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01519naa a2200289 a 4500
001 1552794
005 1997-05-06
008 1992 bl uuuu u00u1 u #d
100 1 $aBIONDI, D.
245 $aEstudo de amostragem para a analise quimica foliar do dedaleiro (Lafoensia pacari St. Hil.) na arborizacao urbana.
260 $c1992
500 $aTrabalho apresentado no 2o. Congresso Nacional sobre Essencias Nativas, Sao Paulo, 1992.
520 $aO estudo foi desenvolvido em 25 arvores de dedaleiro (Lafoensia pacari St. Hil) plantadas na calcada de uma rua arborizada. A coleta de folhas se deu em 3 posicoes da copa: base, meio e topo, com exposicao norte. Os elementos determinados na analise quimica foliar foram: N, P, K, Ca, Mg, Fe, Mn, Cu E Zn. Os resultados indicaram para P, K, Ca, Mg e Zn que qualquer posicao poderia ser tomada na coleta de folhas. E para N, Fe, Mn e Cu, a posicao do meio foi a mais representativa. Concluiu-se, baseado nos aspecto praticos de coleta e fisiologicos da arvore, que a melhor posicao e a do meio para determinacao de todos os nutrientes.
650 $aanalytical methods
650 $aBrazil
650 $aleaves
650 $atissue analysis
650 $aAnálise Foliar
650 $aAnálise Química
650 $aArborização
650 $aDedaleiro
653 $aBrasil
653 $aCuritiba
653 $aLafoensia parcari
653 $aParana
700 1 $aREISSMAN, C. B.
773 $tRevista do Instituto Florestal, Sao Paulo$gv.4, parte 2, p.601-604, 1992.
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Registro original: |
Embrapa Cerrados (CPAC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
03/02/2016 |
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Data da última atualização: |
26/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
CAMPOS, N. A.; ALVES, J. D.; SOUZA, K. R. D. de; PORTO, B. N.; MAGALHAES, M. M.; SILVA, G. J. da; PAIVA, L. V. |
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Afiliação: |
Nádia Alves Campos, Catholic University of Leuven; José Donizeti Alves, UFLA; Kamila Rezende Dázio de Souza, UFLA; Brenda Neves Porto, UFLA; MARCELO MURAD MAGALHAES, CPATU; Glacy Jaqueline da Silva, UFPEL; Luciano Vilela Paiva, UFLA. |
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Título: |
Evolution of aerenchyma formation in a maize breeding program. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Plant Omics Journal, v. 9, n. 1, p. 19-25, 2016. |
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Idioma: |
Inglês |
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Conteúdo: |
Approximately 28 million hectares of intermittently flooded land with agricultural potential in Brazil could be used for rice crop rotation to increase production. Understanding the flood tolerance mechanisms in "Saracura" is of paramount importance for maize and other crops. Thus, we evaluated the expression levels of the superoxide dismutase, ascorbate peroxidase, guaiacol peroxidase, and catalase antioxidant genes and cell wall loosening (XET) enzyme in maize roots under flooding as well as associated expression with the initiation of aerenchyma formation, which is the most important plant adaptation to flooding. We collected data on "Saracura" at the beginning of the breeding program (cycle 1), a time considered more sensitive to flooding, and during the last selection cycle (cycle 18), a time considered more resistant to flooding. Maize plants were flooded for 12 and 24h, and roots were collected for anatomic (aerenchyma density in the root cortex) and gene expression analyses by qRT-PCR. Our results showed that there was a proportional graded increase in aerenchyma formed in the root cortex with increased flooding time that was most pronounced during selection cycle 18. Antioxidant enzyme gene expression levels at both time points were similar: high expression just after germination, decreased expression after 12h, and increased expression after 24h of flooding. Aerenchyma formation was detectable after 24h of flooding, which coincided with the highest antioxidant enzyme gene expression levels. These results indicate that the correlation between antioxidant enzyme activities and flooding can act as a molecular flag to improve flood tolerance in "Saracura". Our results are important to understand the induction of aerenchyma formation and flooding tolerance in "Saracura". MenosApproximately 28 million hectares of intermittently flooded land with agricultural potential in Brazil could be used for rice crop rotation to increase production. Understanding the flood tolerance mechanisms in "Saracura" is of paramount importance for maize and other crops. Thus, we evaluated the expression levels of the superoxide dismutase, ascorbate peroxidase, guaiacol peroxidase, and catalase antioxidant genes and cell wall loosening (XET) enzyme in maize roots under flooding as well as associated expression with the initiation of aerenchyma formation, which is the most important plant adaptation to flooding. We collected data on "Saracura" at the beginning of the breeding program (cycle 1), a time considered more sensitive to flooding, and during the last selection cycle (cycle 18), a time considered more resistant to flooding. Maize plants were flooded for 12 and 24h, and roots were collected for anatomic (aerenchyma density in the root cortex) and gene expression analyses by qRT-PCR. Our results showed that there was a proportional graded increase in aerenchyma formed in the root cortex with increased flooding time that was most pronounced during selection cycle 18. Antioxidant enzyme gene expression levels at both time points were similar: high expression just after germination, decreased expression after 12h, and increased expression after 24h of flooding. Aerenchyma formation was detectable after 24h of flooding, which coincided with the highest antioxidant enzy... Mostrar Tudo |
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Thesagro: |
Melhoramento; Milho. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/138394/1/Campos2016.pdf
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Marc: |
LEADER 02401naa a2200217 a 4500
001 2036062
005 2022-05-26
008 2016 bl uuuu u00u1 u #d
100 1 $aCAMPOS, N. A.
245 $aEvolution of aerenchyma formation in a maize breeding program.$h[electronic resource]
260 $c2016
520 $aApproximately 28 million hectares of intermittently flooded land with agricultural potential in Brazil could be used for rice crop rotation to increase production. Understanding the flood tolerance mechanisms in "Saracura" is of paramount importance for maize and other crops. Thus, we evaluated the expression levels of the superoxide dismutase, ascorbate peroxidase, guaiacol peroxidase, and catalase antioxidant genes and cell wall loosening (XET) enzyme in maize roots under flooding as well as associated expression with the initiation of aerenchyma formation, which is the most important plant adaptation to flooding. We collected data on "Saracura" at the beginning of the breeding program (cycle 1), a time considered more sensitive to flooding, and during the last selection cycle (cycle 18), a time considered more resistant to flooding. Maize plants were flooded for 12 and 24h, and roots were collected for anatomic (aerenchyma density in the root cortex) and gene expression analyses by qRT-PCR. Our results showed that there was a proportional graded increase in aerenchyma formed in the root cortex with increased flooding time that was most pronounced during selection cycle 18. Antioxidant enzyme gene expression levels at both time points were similar: high expression just after germination, decreased expression after 12h, and increased expression after 24h of flooding. Aerenchyma formation was detectable after 24h of flooding, which coincided with the highest antioxidant enzyme gene expression levels. These results indicate that the correlation between antioxidant enzyme activities and flooding can act as a molecular flag to improve flood tolerance in "Saracura". Our results are important to understand the induction of aerenchyma formation and flooding tolerance in "Saracura".
650 $aMelhoramento
650 $aMilho
700 1 $aALVES, J. D.
700 1 $aSOUZA, K. R. D. de
700 1 $aPORTO, B. N.
700 1 $aMAGALHAES, M. M.
700 1 $aSILVA, G. J. da
700 1 $aPAIVA, L. V.
773 $tPlant Omics Journal$gv. 9, n. 1, p. 19-25, 2016.
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Embrapa Amazônia Oriental (CPATU) |
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