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19. | | QUADROS, B. R. de; CONCEIÇÃO, H. E. O. da. Influência de espaçamentos sobre o crescimento de plantas de helicônia, nas condições edafoclimáticas de Benevides, Pará. In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA UFRA, 3.; SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA AMAZÔNIA ORIENTAL, 9., 2006, Belém, PA. Agricultura sustentável na Amazônia: anais. Belém, PA: UFRA: Embrapa Amazônia Oriental, 2006. Biblioteca(s): Embrapa Amazônia Oriental. |
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Registros recuperados : 133 | |
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Registro Completo
Biblioteca(s): |
Embrapa Amazônia Ocidental. |
Data corrente: |
27/11/1996 |
Data da última atualização: |
27/12/2018 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
CONCEIÇÃO, H. E. O. da. |
Afiliação: |
EMBRAPA-CNPSD. |
Título: |
Evaluation of Hevea clones subjected to water deficits. |
Ano de publicação: |
1986 |
Fonte/Imprenta: |
In: INTERNATIONAL RUBBER CONFERENCE, 1985, Kuala Lumpur. Procedings. Kuala Lumpur: RRIM, 1986. |
Páginas: |
p. 1-14. |
Idioma: |
Inglês |
Conteúdo: |
Six clones of Hevea were subjected to both continuous and cyclic dehydration treatments in order to evaluate their response with respect to photosynthesis, transpiration and stomatal resistance, to plant water status. The trials were carried out on young Hevea plants at eighty-five days after the stumps were transplanted in a greenhouse. The increasing soil dehydration influenced the clones differently by reducing the leaf water potential, transpiration and photosynthesis: and increasing the stomatal resistance. In some clones the cyclic soil dehydrationcaused significant reduction in the level of recovery of the transpiration rates and net photosynthesis up to the first and second water deficit cycle, respectively. For all clones, the leaf water potential decreased with the deficit cycles: and 48 h after re-irrigation the mean values of the pre-stress condition were fully recovered. The stomatal resistance increased with the cyclic water deficits. After re-irrigation a differential recovery of this parameter was observed. Consideringthe variables studied as a whole, clones IAN 3087 and IAN 6323 were less influenced by the imposed drought conditions, while FX 3899 was more sensitive. |
Palavras-Chave: |
Amazonas; Brasil; Manaus; Rubber tree. |
Thesagro: |
Deficiência Hídrica; Espécie; Hevea; Seringueira. |
Thesaurus NAL: |
soil water deficit. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/179174/1/Fol-3578.pdf
|
Marc: |
LEADER 01836nam a2200229 a 4500 001 1665127 005 2018-12-27 008 1986 bl uuuu u00u1 u #d 100 1 $aCONCEIÇÃO, H. E. O. da 245 $aEvaluation of Hevea clones subjected to water deficits. 260 $aIn: INTERNATIONAL RUBBER CONFERENCE, 1985, Kuala Lumpur. Procedings. Kuala Lumpur: RRIM$c1986 300 $ap. 1-14. 520 $aSix clones of Hevea were subjected to both continuous and cyclic dehydration treatments in order to evaluate their response with respect to photosynthesis, transpiration and stomatal resistance, to plant water status. The trials were carried out on young Hevea plants at eighty-five days after the stumps were transplanted in a greenhouse. The increasing soil dehydration influenced the clones differently by reducing the leaf water potential, transpiration and photosynthesis: and increasing the stomatal resistance. In some clones the cyclic soil dehydrationcaused significant reduction in the level of recovery of the transpiration rates and net photosynthesis up to the first and second water deficit cycle, respectively. For all clones, the leaf water potential decreased with the deficit cycles: and 48 h after re-irrigation the mean values of the pre-stress condition were fully recovered. The stomatal resistance increased with the cyclic water deficits. After re-irrigation a differential recovery of this parameter was observed. Consideringthe variables studied as a whole, clones IAN 3087 and IAN 6323 were less influenced by the imposed drought conditions, while FX 3899 was more sensitive. 650 $asoil water deficit 650 $aDeficiência Hídrica 650 $aEspécie 650 $aHevea 650 $aSeringueira 653 $aAmazonas 653 $aBrasil 653 $aManaus 653 $aRubber tree
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Embrapa Amazônia Ocidental (CPAA) |
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