| Registro completo |
| Provedor de dados: |
Braz. J. Plant Physiol.
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| País: |
Brazil
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| Título: |
Growth and total-N content of Prosopis juliflora (SW) D. C. are stimulated by low NaCl levels
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| Autores: |
Viégas,Ricardo Almeida
Fausto,Maria José Martins
Queiroz,José Elenildo
Rocha,Iza Marineves Almeida
Silveira,Joaquim Albenísio Gomes
Viégas,Pedro Roberto Almeida
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| Data: |
2004-04-01
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| Ano: |
2004
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| Palavras-chave: |
Ion partitioning
Nitrogen
Salinity stress
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| Resumo: |
In this study the early effects of salinity on growth, total N and ion accumulation and partitioning in Prosopis juliflora (common name algaroba) were studied with 30-day-old plants grown for 8 days in aerated nutrient solution (NS) free of (control) or supplied with 25, 50, 75 and 100 mmol.L-1 NaCl. Plants grown in 25 and 50 mmol.L-1 NaCl accumulated a total dry mass (DM) and shoot N content greater than the control. However, at 75 and 100 mmol.L-1 NaCl such parameters were diminished. Whole plant transpiration rates were higher with 25 and 50 mmol.L-1 NaCl and lower with 75 and 100 mmol.L-1 NaCl. Salinity did not influence shoot (80%) and root (70%) water content (WC) but reduced the K+ content of shoot while that of root was not affected. Increasing external NaCl concentrations increased K+/Na+ ratios of both plant parts. The data support the hypothesis that increase in transpiration rates and in shoot total N may account for growth stimulation of algaroba under mild salinity.
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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=S1677-04202004000100009
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| Editor: |
Brazilian Journal of Plant Physiology
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| Relação: |
10.1590/S1677-04202004000100009
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| Formato: |
text/html
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| Fonte: |
Brazilian Journal of Plant Physiology v.16 n.1 2004
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| Direitos: |
info:eu-repo/semantics/openAccess
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