Production of rocket under salt stress in hydroponic systems

Production of rocket under salt stress in hydroponic systems

ABSTRACT: Salinity is one of the most limiting abiotic stresses in crop production worldwide. In this study, two rocket cultivars (Cultivada and Folha Larga) were grown in hydroponic system (nutrient film technique) under six treatments. The control comprised a nutrient solution without salt addition, and the other treatments contained different NaCl concentrations in the nutrient solution, resulting in the following electrical conductivities: 1.8, 3.8, 5.8, 7.8, 9.7 and 11.8 dS/m. The experimental design was completely randomized (6x2) with six levels of salt and two rockets cultivars, with four replicates per treatment. Increasing salinity reduced the fresh and dry mass of the leaves, roots, and the protein content, but the proline content was increased. The enzymatic activity of catalase (CAT), ascorbate peroxidase (APX) and polyphenoloxidase (PPO) increased with salinity. The activity of CAT and PPO of cv. Folha Larga was higher than of cv. Cultivada and coincided with a greater production of biomass in leaves and roots, showing the effectiveness of the antioxidative defense system in maintaining the growth of genotypes under increasing salinity of the solution.

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Main Authors: Jesus,Cléoma G, Silva Júnior,Fernando J, Camara,Terezinha R, Silva,Ênio FF, Willadino,Lilia
Format: Digital revista
Language:English
Published: Associação Brasileira de Horticultura 2015
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362015000400493
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spelling oai:scielo:S0102-053620150004004932016-01-07Production of rocket under salt stress in hydroponic systemsJesus,Cléoma GSilva Júnior,Fernando JCamara,Terezinha RSilva,Ênio FFWilladino,Lilia Eruca sativa antioxidant enzymes NFT. ABSTRACT: Salinity is one of the most limiting abiotic stresses in crop production worldwide. In this study, two rocket cultivars (Cultivada and Folha Larga) were grown in hydroponic system (nutrient film technique) under six treatments. The control comprised a nutrient solution without salt addition, and the other treatments contained different NaCl concentrations in the nutrient solution, resulting in the following electrical conductivities: 1.8, 3.8, 5.8, 7.8, 9.7 and 11.8 dS/m. The experimental design was completely randomized (6x2) with six levels of salt and two rockets cultivars, with four replicates per treatment. Increasing salinity reduced the fresh and dry mass of the leaves, roots, and the protein content, but the proline content was increased. The enzymatic activity of catalase (CAT), ascorbate peroxidase (APX) and polyphenoloxidase (PPO) increased with salinity. The activity of CAT and PPO of cv. Folha Larga was higher than of cv. Cultivada and coincided with a greater production of biomass in leaves and roots, showing the effectiveness of the antioxidative defense system in maintaining the growth of genotypes under increasing salinity of the solution.info:eu-repo/semantics/openAccessAssociação Brasileira de HorticulturaHorticultura Brasileira v.33 n.4 20152015-12-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362015000400493en10.1590/S0102-053620150000400014
institution SCIELO
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country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-scielo-br
tag revista
region America del Sur
libraryname SciELO
language English
format Digital
author Jesus,Cléoma G
Silva Júnior,Fernando J
Camara,Terezinha R
Silva,Ênio FF
Willadino,Lilia
spellingShingle Jesus,Cléoma G
Silva Júnior,Fernando J
Camara,Terezinha R
Silva,Ênio FF
Willadino,Lilia
Production of rocket under salt stress in hydroponic systems
author_facet Jesus,Cléoma G
Silva Júnior,Fernando J
Camara,Terezinha R
Silva,Ênio FF
Willadino,Lilia
author_sort Jesus,Cléoma G
title Production of rocket under salt stress in hydroponic systems
title_short Production of rocket under salt stress in hydroponic systems
title_full Production of rocket under salt stress in hydroponic systems
title_fullStr Production of rocket under salt stress in hydroponic systems
title_full_unstemmed Production of rocket under salt stress in hydroponic systems
title_sort production of rocket under salt stress in hydroponic systems
description ABSTRACT: Salinity is one of the most limiting abiotic stresses in crop production worldwide. In this study, two rocket cultivars (Cultivada and Folha Larga) were grown in hydroponic system (nutrient film technique) under six treatments. The control comprised a nutrient solution without salt addition, and the other treatments contained different NaCl concentrations in the nutrient solution, resulting in the following electrical conductivities: 1.8, 3.8, 5.8, 7.8, 9.7 and 11.8 dS/m. The experimental design was completely randomized (6x2) with six levels of salt and two rockets cultivars, with four replicates per treatment. Increasing salinity reduced the fresh and dry mass of the leaves, roots, and the protein content, but the proline content was increased. The enzymatic activity of catalase (CAT), ascorbate peroxidase (APX) and polyphenoloxidase (PPO) increased with salinity. The activity of CAT and PPO of cv. Folha Larga was higher than of cv. Cultivada and coincided with a greater production of biomass in leaves and roots, showing the effectiveness of the antioxidative defense system in maintaining the growth of genotypes under increasing salinity of the solution.
publisher Associação Brasileira de Horticultura
publishDate 2015
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362015000400493
work_keys_str_mv AT jesuscleomag productionofrocketundersaltstressinhydroponicsystems
AT silvajuniorfernandoj productionofrocketundersaltstressinhydroponicsystems
AT camaraterezinhar productionofrocketundersaltstressinhydroponicsystems
AT silvaenioff productionofrocketundersaltstressinhydroponicsystems
AT willadinolilia productionofrocketundersaltstressinhydroponicsystems
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