Gas exchanges and growth of passion fruit seedlings under salt stress and hydrogen peroxide

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dc.creatorAndré Alisson Rodrigues da Silva
dc.creatorGeovani Soares de Lima
dc.creatorCarlos Alberto Vieira de Azevedo
dc.creatorHans Raj Gheyi
dc.creatorLeandro de Pádua Souza
dc.creatorLuana Lucas de Sá Almeida Veloso
dc.date2019
dc.date.accessioned2026-07-07T04:30:48Z
dc.descriptionThe semi-arid region of the Brazilian Northeast has adequate edaphoclimatic conditions for the passion fruit production, but the water used for irrigation commonly has high concentrations of salts that are harmful to the plant growth and development. A previous supply of hydrogen peroxide induces the acclimation of plants under saline stress conditions, reducing deleterious effects on their growth and physiology. This study aimed to evaluate the gas exchanges and growth of passion fruit as a function of irrigation with saline water and exogenous application of hydrogen peroxide. The experiment was carried out under greenhouse conditions, using a randomized block design, in a 4 x 4 factorial arrangement, being four levels of irrigation water electrical conductivity (0.7 dS m-1, dS m-1, 2.1 dS m-1 and 2.8 dS m-1) and four hydrogen peroxide concentrations (0 µM, 25 µM, 50 µM and 75 µM), with four replicates and two plants per plot. The hydrogen peroxide application attenuated the deleterious effects of the irrigation water salinity on transpiration, CO2 assimilation rate, internal carbon concentration, plant height and leaf area of yellow passion fruit, at 60 days after sowing, with the concentration of 25 µM being the most efficient. Irrigation using water with electrical conductivity above 0.7 dS m-1 negatively affects the gas exchanges and growth of passion fruit, being the stomatal conductance and leaf area the most sensitive variables to the salt stress.
dc.formatapplication/pdf
dc.identifier1517-6398
dc.identifierhttps://www.redalyc.org/articulo.oa?id=253067965038
dc.identifierhttps://www.redalyc.org/journal/2530/253067965038/
dc.identifierhttps://www.redalyc.org/journal/2530/253067965038/html/
dc.identifierhttps://www.redalyc.org/journal/2530/253067965038/253067965038.epub
dc.identifierhttps://www.redalyc.org/journal/2530/253067965038/movil
dc.identifierhttps://doi.org/10.1590/1983-40632019v4955671
dc.identifier.urihttp://hdl.handle.net/123456789/463651
dc.languageen
dc.publisherUniversidade Federal de Goiás
dc.relationhttp://www.redalyc.org/revista.oa?id=2530
dc.rightsPesquisa Agropecuária Tropical
dc.sourcePesquisa Agropecuária Tropical (Brasil) Vol.49
dc.subjectAgrociencias
dc.titleGas exchanges and growth of passion fruit seedlings under salt stress and hydrogen peroxide
dc.typeartículo científico

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Pesquisa Agropecuária Tropical - Universidade Federal de Goiás