| Registro completo |
| Provedor de dados: |
AGRIAMBI
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| País: |
Brazil
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| Título: |
Organic solutes in coconut palm seedlings under water and salt stresses
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| Autores: |
Silva,Alexandre R. A. da
Bezerra,Francisco M. L.
Lacerda,Claudivan F. de
Miranda,Rafael de S.
Marques,Elton C.
Gomes-Filho,Enéas
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| Data: |
2016-11-01
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| Ano: |
2016
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| Palavras-chave: |
Cocos nucifera L.
Multiple stresses
Biochemical mechanisms
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| Resumo: |
ABSTRACT The objective of this study was to investigate the biochemical mechanisms associated with isolated and/or concurrent actions of drought and soil salinity in seedlings of coconut tree, through the accumulation of organic solutes (soluble carbohydrates, soluble amino N and free proline) in leaves and roots. The experiment, conducted in a protected environment, in Fortaleza, Brazil, in a randomized block design, in a split-plot arrangement, evaluated the effects of different levels of water stress (plots) by imposing distinct percentages of replacement of water losses through crop potential evapotranspiration - ETpc (20, 40, 60, 80 and 100%), associated with subplots consisting of increasing levels of soil salinity in saturation extract (1.72, 6.25, 25.80 and 40.70 dS m-1) provided by the soils collected in the Irrigated Perimeter of Morada Nova. Salinity did not change the concentration of organic solutes; however, there were increases in leaf and root levels of free proline in response to water stress, which contributes to the osmoregulation and/or osmoprotection of the species under adverse conditions of water supply.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016001101002
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| Editor: |
Departamento de Engenharia Agrícola - UFCG
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| Relação: |
10.1590/1807-1929/agriambi.v20n11p1002-1007
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| Formato: |
text/html
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| Fonte: |
Revista Brasileira de Engenharia Agrícola e Ambiental v.20 n.11 2016
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| Direitos: |
info:eu-repo/semantics/openAccess
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