Hydroponic Cultivation of Laranja Cherry Tomatoes under Salt Stress and Foliar Application of Hydrogen Peroxide

Author:

Guedes Maria Amanda1,Silva André Alisson Rodrigues da1ORCID,Lima Geovani Soares de1ORCID,Gheyi Hans Raj1ORCID,Soares Lauriane Almeida dos Anjos2,Silva Luderlândio de Andrade1,Oliveira Valeska Karolini Nunes1,Fátima Reynaldo Teodoro de1,Nobre Reginaldo Gomes3ORCID,Nóbrega Jackson Silva1,Azevedo Carlos Alberto Vieira de1,Silva Saulo Soares da1,Gomes Josivanda Palmeira1

Affiliation:

1. Academic Unit of Agricultural Engineering, Federal University of Campina Grande, Campina Grande 58430-380, PB, Brazil

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

3. Department of Science and Technology, Federal Rural University of the Semi-Arid Region, Caraúbas 59780-000, RN, Brazil

Abstract

The objective of this study was to evaluate the effect of the foliar application of hydrogen peroxide (H2O2) in mitigating the effects of salt stress on cherry tomato cultivation in a hydroponic system. The experiment was conducted in a greenhouse, using a Nutrient Film Technique hydroponic system. The experimental design used was completely randomized in a split-plot scheme, with four levels of electrical conductivity of the nutrient solution—ECns (2.1, 2.8, 3.5, and 4.2 dS m−1), considered as plots, and five H2O2 concentrations (0, 12, 24, 36, and 48 µM), regarded as subplots, with four replicates and two plants per plot. An increase in the electrical conductivity of the nutrient solution negatively affected the production components of cherry tomatoes. However, it did not affect the post-harvest quality of the fruits. Despite the reductions observed in the production components due to the increase in the electrical conductivity of the nutrient solution, foliar application of H2O2 at concentrations esteemed between 22 and 25 µM attenuated the deleterious effects of salt stress on the number of fruits and ascorbic acid content and increased the total fruit production per plant of cherry tomatoes.

Funder

National Council for Scientific and Technological Development—Processo

CAPES

UFCG

Publisher

MDPI AG

Subject

Plant Science,Agronomy and Crop Science,Food Science

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