Hydrogen peroxide as an attenuator of salt stress on the morphophysiology of ornamental peppers
DOI:
https://doi.org/10.1590/1983-21252026v3913937rcKeywords:
Capsicum frutescens L. Abiotic stress. Soilless cultivation.Abstract
This study aimed to evaluate the effects of foliar application of hydrogen peroxide (H2O2) on physiological indices and growth of ornamental Etna pepper plants cultivated hydroponically under saline nutrient solutions. The experiment was conducted in a greenhouse in Pombal, Paraíba, Brazil, using a nutrient film technique (NFT) hydroponic system. Treatments were arranged in a split-plot design, with electrical conductivity levels of the nutrient solution (ECns: 2.1, 2.8, 3.5, 4.2, and 4.9 dS m-1) assigned to the main plots and five H2O2 concentrations (0, 8, 16, 24, and 32 µM) to the subplots. Each treatment was replicated six times, with two plants per experimental unit. Gas exchange, photosynthetic pigments, relative water content, electrolyte leakage, water saturation deficit, and growth variables were evaluated. Nutrient solution salinity from 2.1 dS m-1 negatively affected stomatal conductance, transpiration, chlorophyll b content, and plant height of ornamental pepper plants. In the absence of H2O2, nutrient solution salinity from 2.1 dS m-1 inhibited stomatal conductance, photosynthetic pigment contents, and plant growth. Hydrogen peroxide, when foliar applied alone at concentrations of up to 32 µM, enhances plant height and leaf number and, conversely, inhibits stem diameter in ornamental Etna pepper plants.
References
ALVARES, C. A. et al. Köppen climate classification map for Brazil. Meteorologische Zeitschrift, 22: 711-728, 2013.
ANDRADE, E. M. G. et al. Hydrogen peroxide as attenuator of salt stress effects on the physiology and biomass of yellow passion fruit. Revista Brasileira de Engenharia Agrícola e Ambiental, 26: 571-578, 2022.
ARAGÃO, J. et al. Hydrogen peroxide in the mitigation of salt stress in bell pepper. Semina: Ciências Agrárias, 44: 217-238, 2023.
BATISTA, M. C. et al. Fisiologia e produção de cultivares de tomate cereja em sistema hidropônico com água salobra. Revista Brasileira de Engenharia Agrícola e Ambiental, 25: 219-227, 2021.
CAPITULINO, J. D. et al. Influence of foliar application of hydrogen peroxide on gas exchange, photochemical efficiency and growth of soursop under salt stress. Plants, 12: e599, 2023.
DANTAS, M. V. et al. Gas exchange and hydroponic production of zucchini under salt stress and H2O2 application. Revista Caatinga, 35: 436-449, 2022.
DANTAS, M. V. et al. Summer squash morphophysiology under salt stress and exogenous application of H2O2 in hydroponic cultivation. Comunicata Scientiae, 12: 3464-3479, 2021.
FERREIRA, D. F. SISVAR: A computer analysis system to fixed effects split plot type designs. Revista Brasileira de Biometria, 37: 529-535, 2019.
FILGUEIRA, F. A. R. Novo manual de olericultura: agrotecnologia moderna na produção e comercialização de hortaliças. 3. ed. rev. e ampl. Viçosa, MG: Editora UFV, 2013. 421 p.
GOMES, G. P. et al. Combinations of distance measures and clustering algorithms in pepper germplasm characterization. Horticultura Brasileira, 37: 172-179, 2019.
GUEDES, M. A. et al. H2O2 as attenuator of salt stress on the physiology and growth of hydroponic cherry tomato. Revista Caatinga, 37: e12002, 2024.
HOAGLAND, D. R.; ARNON, D. I. The water-culture method for growing plants without soil. 2. ed. Circular. Berkeley: California Agricultural Experiment Station, 1950. n. 347, 32 p.
ISLA. Pimenta (Etna Ornamental) IS 964. Available at: https://www.isla.com.br/pimenta-Etna-ornamental-is-964-env-linha-super-und-964-61. Access on: Sep. 26, 2024.
LIMA, G. S. et al. Saline water irrigation strategies and potassium fertilization on physiology and fruit production of yellow passion fruit. Revista Brasileira de Engenharia Agrícola e Ambiental, 26: 180-189, 2020.
MENDONÇA, A. J. T. et al. Salicylic acid modulates okra tolerance to salt stress in hydroponic system. Agriculture, 12: e1687, 2022.
MODESTO, F. J. N. et al. Crescimento, produção e consumo hídrico do quiabeiro submetido a salinidade em condições hidropônicas. Irriga, 24: 86-97, 2019.
NÓBREGA, J. S. et al. Emergência e crescimento inicial de melancia submetida a salinidade e doses de ácido salicílico. Desafios-Revista Interdisciplinar da Universidade Federal do Tocantins, 7: 162-171, 2020.
OLIVEIRA, F. T. et al. Respostas de porta-enxertos de goiabeira sob diferentes fontes e proporções de materiais orgânicos. Comunicata Scientiae, 6: 17-25, 2022.
PORRA, R. J.; THOMPSON, W. A.; KRIEDEMANN, P. E. Determination of accurate extinction coefficients and simultaneous-equations for assaying chlorophyll-a and chlorophyll-b extracted with 4 different solvents – verification of the concentration of chlorophyll standards by atomic-absorption spectroscopy. Biochimica et Biophysica Acta (BBA): Bioenergetics, 975: 384-394, 1989.
RAMOS, J. G. et al. Hydrogen peroxide as salt stress attenuator in sour passion fruit. Revista Caatinga, 35: 412-422, 2022.
RICHARDS, L. A. Diagnosis and improvement of saline and alkali soils. 1. ed. Washington: U.S. Department of Agriculture, 1954. 160 p. (Agriculture Handbook, 60).
SÁ, V. K. N. O. et al. Physiological indices and growth of hydroponic cucumber under saline nutrient solutions and salicylic acid. Revista Caatinga, 37: e12148, 2024.
SCOTTI-CAMPOS, P. et al. Physiological responses and membrane integrity in three Vigna genotypes with contrasting drought tolerance. Emirates Journal of Food and Agriculture, 25: 1002-1013, 2013.
SILVA, A. A. R. et al. Hydrogen peroxide reduces the effect of salt stress on growth and postharvest quality of hydroponic mini watermelon. Water, Air, & Soil Pollution, 233: e198, 2021.
SILVA JÚNIOR, L. G. A.; GHEYI, H. R.; MEDEIROS, J. F. Composição química de água do cristalino do Nordeste Brasileiro. Revista Brasileira de Engenharia Agrícola e Ambiental, 3: 11-17,1999.
SOARES, M. D. M. et al. Physiology and yield of ‘Gaúcho’ melon under brackish water and salicylic acid in hydroponic cultivation. Arid Land Research and Management, 38: 1-20, 2021.
TAÏBI, K. et al. Effect of salt stress on growth, chlorophyll content, lipid peroxidation and antioxidant defense systems in Phaseolus vulgaris L. South African Journal of Botany, 105: 306-312, 2016.
TAIZ, L.; ZEIGER, E. Fisiologia vegetal. 5. ed. Porto Alegre, RS: ArtMed, 2013. 954 p.
WEATHERLEY, P. E. Studies in the water relations of the cotton plant. I. The field measurement of water deficits in leaves. New Phytologist, 49: 81-97, 1950.
Downloads
Published
Issue
Section
License
Os Autores que publicam na Revista Caatinga concordam com os seguintes termos:
a) Os Autores mantêm os direitos autorais e concedem à revista o direito de primeira publicação, com o trabalho simultaneamente licenciado sob a Licença Creative Commons do tipo atribuição CC-BY, para todo o conteúdo do periódico, exceto onde estiver identificado, que permite o compartilhamento do trabalho com reconhecimento da autoria e publicação inicial nesta revista, sem fins comerciais.
b) Os Autores têm autorização para distribuição não-exclusiva da versão do trabalho publicada nesta revista (ex.: publicar em repositório institucional ou como capítulo de livro), com reconhecimento de autoria e publicação inicial nesta revista.
c) Os Autores têm permissão e são estimulados a publicar e distribuir seu trabalho online (ex.: em repositórios institucionais ou na sua página pessoal) a qualquer ponto antes ou durante o processo editorial, já que isso pode gerar alterações produtivas, bem como aumentar o impacto e a citação do trabalho publicado (Veja O Efeito do Acesso Livre).
