Tratamento pré-germinativo de sementes de cebolinha com peróxido de hidrogênio

Santos, Bárbara Davis Brito dos; Bonou, Semako Ibrahim; Matos, Rigoberto Moreira de; Silva, Patrícia Ferreira da; Cabral, João Henrique de Andrade; Oliveira, Raucha Carolina de; Neto, José Dantas; Lima, Vera L. A. de

doi:10.6008/cbpc2179-6858.2019.005.0027

Cited by 3 publications

(5 citation statements)

References 10 publications

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“…The seed germination percentage of chives treated with hydrogen peroxide remained in accordance with the recommendation of the seed manufacturer, i.e., higher than 80%. It is noteworthy that, in the treatments with hydrogen peroxide application, there was faster germination and high uniformity, thus reaffirming the data of Santos et al [23], who obtained 81% germination percentage for chives using the same cultivar and treatments used as in this study.…”

Section: Sources Ofsupporting

confidence: 92%

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Effect of Electrical Conductivity Levels and Hydrogen Peroxide Priming on Nutrient Solution Uptake by Chives in a Hydroponic System

et al. 2023

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The use of water of high electrical conductivity has become common in hydroponic systems, especially in regions with water scarcity. However, the use of inferior-quality water can affect crop yields. In this scenario, some studies have tested the use of chemical conditioning agents such as hydrogen peroxide to minimize the negative effects of stress on plants. From this perspective, this study aimed to evaluate the action of priming with hydrogen peroxide as a salt stress attenuator on the nutrient solution uptake and productivity of chives in a hydroponic system. The study was conducted in a protected environment with a randomized block design with a split-plot arrangement. The treatments consisted of a main plot consisting of the electrical conductivity of the nutrient solution (1.0, 2.0, 3.0, 4.0, and 5.0 dSm−1) and a subplot with five hydrogen peroxide concentrations (0.0, 0.15, 0.30, 0.45, and 0.60 mM). The increase in the electrical conductivity of the nutrient solution reduced bulb length, the solution volume applied, water uptake, total fresh mass, and the solution use efficiency by plants. Throughout the cultivation cycle in the hydroponic system, the consumption of nutrient solution was 459 mm lost by evapotranspiration. Acclimation with 0.60 mM hydrogen peroxide associated with 1 dSm−1 of electrical conductivity of the nutrient solution favors bulb diameter in chives. The increase in electrical conductivity compromises the productive yield of chives.

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Section: Sources Ofsupporting

confidence: 92%

“…It is noteworthy that, in the treatments with hydrogen peroxide application, there was faster germination and high uniformity, thus reaffirming the data of Santos et al [23], who obtained 81% germination percentage for chives using the same cultivar and treatments used as in this study.…”

Section: Sources Ofsupporting

confidence: 92%

Effect of Electrical Conductivity Levels and Hydrogen Peroxide Priming on Nutrient Solution Uptake by Chives in a Hydroponic System

et al. 2023

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“…The analysis of variance revealed a significant effect of the water salinity levels on the contents of modifications, constituting a 'stress memory' that can be expressed during other plant development phases (Santos et al, 2019).…”

Section: Resultsmentioning

confidence: 99%

Métodos de aplicação de peróxido de hidrogênio em mudas de gravioleira irrigadas com água salina

et al. 2020

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A aclimatação das plantas ao estresse salino, por meio de aplicação de peróxido de hidrogênio, ocorre devido à ativação do sistema de defesa antioxidante. Neste sentido, objetivou-se com o estudo avaliar os teores de pigmentos fotossintéticos e a eficiência fotoquímica de mudas de gravioleira sob irrigação com águas salinas e distintos métodos de aplicação de peróxido de hidrogênio. O estudo foi realizado em condições de casa de vegetação, em esquema 5 x 4, sendo cinco níveis de condutividade elétrica da água de irrigação – CEa (0,6; 1,2; 1,8; 2,4 e 3,0 dS m-1) e quatro métodos de aplicação de peróxido de hidrogênio- MA (sem aplicação de H2O2, aplicação via embebição das sementes, aplicação via pulverização foliar e aplicação via embebição das sementes e pulverização foliar). A salinidade da água de irrigação até 1,4 e 1,1 dS m-1provocou aumento na síntese de clorofila b e carotenoides, respectivamente. Já a irrigação com água a partir de 0,6 dS m-1 reduziu a síntese de clorofila a e total das plantas de gravioleira. A aplicação de 20 μm de H2O2via embebição da semente resulta em aumento nos teores de clorofila a e b, total, fluorescência máxima e variável das mudas de gravioleira.A embebição das sementes com peróxido de hidrogênio aumentou a fluorescência inicial da clorofila nas plantas irrigadas com água de 1,2 dS m-1.

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“…For the methods of application M1 and M3, exposure to H 2 O 2 started with the hydration of the seeds. Thus, several processes are initiated in the imbibed seeds, which can be stored as a kind of "stress memory" and can be expressed during later stages of plant development (Santos et al, 2019;Veloso et al, 2021). Furthermore, H 2 O 2 acts by interacting with hormones that control germination and production of O 2 for respiration in mitochondria, improving metabolic activity, besides helping to overcome seed coat dormancy, which in turn allows greater water absorption (Ahmad et al, 2013) and consequently may favor RDM production.…”

Section: /11mentioning

confidence: 99%

“…In this context, the exogenous application of hydrogen peroxide (H 2 O 2 ) constitutes an alternative to reduce the problems resulting from excess of salts (Silva et al, 2024) and may induce the acclimatization of plants. Santos et al (2019), working with H 2 O 2 , found that its use favored the growth of plants that were under salt stress.…”

Section: Introductionmentioning

confidence: 99%

Mitigation of salt stress in passion fruit seedlings with H2O2 application

Nobre,

Vasconcelos,

Sales

et al. 2024

Rev. bras. eng. agríc. ambient.

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Hydrogen peroxide (H2O2) can be indicated as a strategy to mitigate salt stress in plants, so the objective of this study was to evaluate the effect of different concentrations and methods of application of H2O2 as a mitigator of salt stress on the growth, physiology, and quality of seedlings of yellow passion fruit. The experiment was carried out in a protected environment (screened) belonging to UFERSA, in Caraúbas - RN, Brazil, in a randomized block design and analyzed in a 2 × 4 × 3 factorial scheme, with four replications and one plant per plot. The treatments consisted of levels of electrical conductivity of irrigation water - ECw (0.5 and 3.2 dS m-1), H2O2 concentrations (0, 12, 24, and 36 μM), and H2O2 application methods (M1 = seed soaking, M2 = foliar spraying, and M3 = seed soaking + foliar spraying). Increased levels of salinity in irrigation water negatively affect seedling quality. Hydrogen peroxide at an average concentration of 24 µM mitigates salt stress in passion fruit seedlings cv. BRS Gigante Amarelo. H2O2 application to seeds associated with foliar spraying mitigates the effects of salt stress on the absolute growth rate of the leaf area of passion fruit seedlings irrigated with an ECw of 3.2 dS m-1.

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Tratamento pré-germinativo de sementes de cebolinha com peróxido de hidrogênio

Cited by 3 publications

References 10 publications

Effect of Electrical Conductivity Levels and Hydrogen Peroxide Priming on Nutrient Solution Uptake by Chives in a Hydroponic System

Effect of Electrical Conductivity Levels and Hydrogen Peroxide Priming on Nutrient Solution Uptake by Chives in a Hydroponic System

Métodos de aplicação de peróxido de hidrogênio em mudas de gravioleira irrigadas com água salina

Mitigation of salt stress in passion fruit seedlings with H2O2 application

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