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Salicylic Acid Modulates Okra Tolerance to Salt Stress in Hydroponic System

Author

Listed:
  • Allysson Jonhnny Torres Mendonça

    (Academic Unit of Agricultural Engineering, Federal University of Campina Grande, Campina Grande 58430-380, PB, Brazil)

  • André Alisson Rodrigues da Silva

    (Academic Unit of Agricultural Engineering, Federal University of Campina Grande, Campina Grande 58430-380, PB, Brazil)

  • Geovani Soares de Lima

    (Academic Unit of Agricultural Engineering, Federal University of Campina Grande, Campina Grande 58430-380, PB, Brazil)

  • Lauriane Almeida dos Anjos Soares

    (Academic Unit of Agrarian Sciences, Federal University of Campina Grande, Pombal 58840-000, PB, Brazil)

  • Valeska Karolini Nunes Oliveira

    (Academic Unit of Agricultural Engineering, Federal University of Campina Grande, Campina Grande 58430-380, PB, Brazil)

  • Hans Raj Gheyi

    (Academic Unit of Agricultural Engineering, Federal University of Campina Grande, Campina Grande 58430-380, PB, Brazil)

  • Claudivan Feitosa de Lacerda

    (Department of Agricultural Engineering, Federal University of Ceará, Fortaleza 60455-760, CE, Brazil)

  • Carlos Alberto Vieira de Azevedo

    (Academic Unit of Agricultural Engineering, Federal University of Campina Grande, Campina Grande 58430-380, PB, Brazil)

  • Vera Lúcia Antunes de Lima

    (Academic Unit of Agricultural Engineering, Federal University of Campina Grande, Campina Grande 58430-380, PB, Brazil)

  • Pedro Dantas Fernandes

    (Academic Unit of Agricultural Engineering, Federal University of Campina Grande, Campina Grande 58430-380, PB, Brazil)

Abstract

Salinity is one of the most devastating abiotic stresses that limit plant growth and yield, especially in arid and semi-arid regions. The objective of this study was to evaluate the effect of foliar application of salicylic acid in mitigating the effects of salt stress on okra cultivation in a hydroponic system. The study was conducted in a greenhouse, consisting of two experiments. A completely randomized design was adopted in a split-plot scheme, with four levels of electrical conductivity of the nutrient solution—EC (2.1; 3.6; 5.1, and 6.6 dS m −1 ) considered the plots and four salicylic acid concentrations—SA (0, 1.2; 2.4, and 3.6 mM), the subplots, with four replications. The second experiment differed from the first only by the increase in the EC levels (3.0, 5.0, 7.0, and 9.0 dS m −1 ). An increase in the electrical conductivity of the nutrient solution negatively affected the physiology and production components of okra. However, foliar application of salicylic acid at concentrations between 1.2 and 2.3 mM reduced the harmful effects of salt stress. The salinity threshold for hydroponic cultivation of okra was 2.54 dS m −1 , with a reduction of 7.98% per unit increment in EC above this level.

Suggested Citation

  • Allysson Jonhnny Torres Mendonça & André Alisson Rodrigues da Silva & Geovani Soares de Lima & Lauriane Almeida dos Anjos Soares & Valeska Karolini Nunes Oliveira & Hans Raj Gheyi & Claudivan Feitosa , 2022. "Salicylic Acid Modulates Okra Tolerance to Salt Stress in Hydroponic System," Agriculture, MDPI, vol. 12(10), pages 1-24, October.
    • Handle: RePEc:gam:jagris:v:12:y:2022:i:10:p:1687-:d:941595
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    References listed on IDEAS

    as
    1. Bione, Maria Augusta Amorim & Soares, Tales Miler & Cova, Alide Mitsue Watanabe & Paz, Vital Pedro da Silva & Gheyi, Hans Raj & Rafael, Maria Raphaela Severo & Modesto, Francisco José Nunes & Santana,, 2021. "Hydroponic production of ‘Biquinho’ pepper with brackish water," Agricultural Water Management, Elsevier, vol. 245(C).
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    Cited by:

    1. Carla Ingryd Nojosa Lessa & Claudivan Feitosa de Lacerda & Cláudio Cesar de Aguiar Cajazeiras & Antonia Leila Rocha Neves & Fernando Bezerra Lopes & Alexsandro Oliveira da Silva & Henderson Castelo So, 2023. "Potential of Brackish Groundwater for Different Biosaline Agriculture Systems in the Brazilian Semi-Arid Region," Agriculture, MDPI, vol. 13(3), pages 1-22, February.
    2. Valeska Karolini Nunes Oliveira & André Alisson Rodrigues da Silva & Geovani Soares de Lima & Lauriane Almeida dos Anjos Soares & Hans Raj Gheyi & Claudivan Feitosa de Lacerda & Carlos Alberto Vieira , 2023. "Foliar Application of Salicylic Acid Mitigates Saline Stress on Physiology, Production, and Post-Harvest Quality of Hydroponic Japanese Cucumber," Agriculture, MDPI, vol. 13(2), pages 1-24, February.

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