Consulta: subjectFacets:"Organic solutes"
Registros recuperados: 3
Data/hora: 09/06/2024 09:37:42

Physiological and ionic changes in dwarf coconut seedlings irrigated with saline water
Provedor de dados: 91
Autores: Lima,Breno L. de C.; Lacerda,Claudivan F. de; Ferreira Neto,Miguel; Ferreira,Jorge F. da S.; Bezerra,Antonio M. E.; Marques,Elton C.
ABSTRACT Salt-tolerant plants are important to cope with salinity and/or sodicity problems in semiarid regions. The dwarf coconut palm (Cocos nucifera L.) has emerged as a salt-tolerant crop once established. However, little is known about the mechanisms that contribute to the survival of coconut seedlings under salinity stress. This study aimed to evaluate the effect of saline water on morpho-physiological and biochemical responses of dwarf coconut seedlings. Treatments were composed of five levels of water salinity, expressed by its electrical conductivity (ECw), as follows: 0.9 (control); 5.2; 10.1; 15.3 and 19.3 dS m-1 in a completely randomized design with four replications. The high levels of organic solutes (carbohydrates and soluble amino-N) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cocos nucifera L.; Salt tolerance; Organic solutes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000200122

Changes in physiological indicators associated with salt tolerance in two contrasting cashew rootstocks
Provedor de dados: 61
Autores: Ferreira-Silva,Sérgio L.; Silveira,Joaquim A.G.; Voigt,Eduardo L.; Soares,Lucilene S.P.; Viégas,Ricardo A.
In order to identify salt tolerance indicators, several physiological variables were evaluated in two contrasting cashew (Anacardium occidentale L.) rootstocks in response to salt stress. The tolerant CCP 09 genotype showed better growth performance after two weeks under a large range of NaCl salinity (50, 100, 150 and 200 mM). The NaCl treatments induced a significant drop in transpiration as a consequence of an increased stomatal resistance in both genotypes. No significant differences in Na+, Cl, and K+ concentrations were found in both roots and leaves regardless of rootstocks. The tolerant genotype exhibited lower relative water content and less negative leaf osmotic potential as compared with the sensitive genotype and, therefore, these variables...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anacardium occidentale; Organic solutes; Salt stress; Salt tolerance; Sodium and chloride partitioning; Sodium-to-potassium ratio.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202008000100006

Osmotic adjustment in roots and leaves of two sorghum genotypes under NaCl stress
Provedor de dados: 61
Autores: Lacerda,Claudivan Feitosa de; Cambraia,José; Oliva,Marco Antonio; Ruiz,Hugo Alberto.
Seedlings of two sorghum genotypes [Sorghum bicolor (L.) Moench], one salt tolerant (CSF 20) and the other salt sensitive (CSF 18) were grown in nutrient solution containing 0, 50 and 100 mmol.L-1 NaCl for seven days and the osmotic potential (Ys) and the contribution of organic and inorganic solutes to the Ys were determined in the leaves and roots. Salinity reduced the Ys of the cellular sap of leaves and roots in both genotypes, mainly in the salt sensitive one. The higher decrease in the Ys in the salt sensitive genotype was mostly due to higher accumulation of Na+ and Cl- that probably exceeded the amount needed for the osmotic adjustment. Among the inorganic solutes, K+ contributed the most to the Ys in control unstressed seedlings, but its...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ions; Organic solutes; Osmotic adjustment; Salinity; Sorghum bicolor.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202003000200007