Data/hora: 09/06/2024 09:37:13

Provedor de dados: | Revista Brasileira de Engenharia Agrícola e Ambiental
País: | Brazil
Título: | Production and antioxidative metabolism in bell pepper grown with saline water in hydroponic system
Autores: | Lima,Nadielan da S.; Morais,Marciana B. de; Silva,Ênio F. de F. e; Camara,Terezinha R.; Willadino,Lilia.
Data: | 2017-10-01
Ano: | 2017
Palavras-chave: | Electrical conductivity; Photosynthetic pigment; Antioxidant enzymes.
Resumo: | ABSTRACT This study aimed to evaluate the effect of salt stress on production and antioxidative defense metabolism of two bell pepper cultivars (Capsicum annuum L.) grown hydroponically. The experimental design was in randomized blocks, with treatments arranged in a 5 x 2 factorial scheme with five replicates. The treatments consisted of five salinity levels of the nutrient solution (2.0, 3.5, 4.5, 5.5 and 6.5 dS m-1) with two bell pepper cultivars, ‘Bruno’ and ‘Rúbia’. Biomass and yield were reduced with increasing salinity. The contents of chlorophyll a, b and total decreased with increasing salinity. There was an increase in proline content and activity of superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX), showing the activation of the antioxidant defense mechanism. The higher yield in the cv. ‘Rúbia’, as well as the greater activity of the APX and the lower levels of chlorophyll content, reflect the best acclimatization of this cultivar to saline stress. The estimated yield of the cv. ‘Rúbia’, 39.9 t ha-1 when grown with ECs of up to 3.5 dS m-1, indicates the feasibility of its commercial cultivation in hydroponic conditions.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017001000675
Editor: | Departamento de Engenharia Agrícola  - UFCG
Relação: | 10.1590/1807-1929/agriambi.v21n10p675-680
Formato: | text/html
Fonte: | Revista Brasileira de Engenharia Agrícola e Ambiental  v.21 n.10 2017
Fonte: | info:eu-repo/semantics/openAccess