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- Title
Effect of Hydrogen Peroxide Application on Salt Stress Mitigation in Bell Pepper (Capsicum annuum L.).
- Authors
Aragão, Jéssica; Lima, Geovani Soares de; Lima, Vera Lúcia Antunes de; Silva, André Alisson Rodrigues da; Capitulino, Jessica Dayanne; Caetano, Edmilson Júnio Medeiros; Silva, Francisco de Assis da; Soares, Lauriane Almeida dos Anjos; Fernandes, Pedro Dantas; Farias, Maria Sallydelândia Sobral de; Gheyi, Hans Raj; Borborema, Lucyelly Dâmela Araújo; Arruda, Thiago Filipe de Lima; Santos, Larissa Fernanda Souza
- Abstract
The present study aimed to evaluate the effects of the foliar application of hydrogen peroxide on the attenuation of salt stress on the growth, photochemical efficiency, production and water use efficiency of 'All Big' bell pepper plants. The experiment was conducted under greenhouse conditions in Campina Grande, PB, Brazil. Treatments were distributed in a randomized block design, in a 5 × 5 factorial scheme, corresponding to five levels of electrical conductivity of irrigation water (0.8, 1.2, 2.0, 2.6 and 3.2 dS m−1) and five concentrations of hydrogen peroxide (0, 15, 30, 45 and 60 μM), with three replicates. Foliar application of hydrogen peroxide at concentration of 15 μM attenuated the deleterious effects of salt stress on photochemical efficiency, biomass accumulation and production components of bell pepper plants irrigated using water with an electrical conductivity of up to 3.2 dS m−1. Foliar spraying of hydrogen peroxide at a concentration of 60 μM intensified the effects of salt stress. The 'All Big' bell pepper was classified as moderately sensitive to salt stress, with an irrigation water salinity threshold of 1.43 dS m−1 and a unit decrease of 8.25% above this salinity level.
- Subjects
BRAZIL; CAPSICUM annuum; BELL pepper; HYDROGEN peroxide; WATER efficiency; IRRIGATION water; ELECTRIC conductivity
- Publication
Plants (2223-7747), 2023, Vol 12, Issue 16, p2981
- ISSN
2223-7747
- Publication type
Article
- DOI
10.3390/plants12162981