Crescimento E Produção Da Abobrinha Sob Irrigação Com Água Salobra

Putti, Fernando Ferrari; Silva, Alexsandro Oliveira da; Silva, Josué Ferreira; Filho, Luís Roberto Almeida Gabriel; Klar, Evelyn

doi:10.15809/irriga.2018v23n4p713-726

Cited by 7 publications

(6 citation statements)

References 10 publications

(11 reference statements)

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“…Due to the absence of research with H 2 O 2 in vegetables, the concentrations used in the present assay were based on studies carried out with cashew (SOUZA et al, 2019) and soursop (VELOSO et al, 2020). The salinity levels of the nutrient solution were based on the work of Putti et al (2018) with the zucchini crop.…”

Section: Methodsmentioning

confidence: 99%

Gas Exchange and Hydroponic Production of Zucchini Under Salt Stress and H2o2 Application

et al. 2022

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Knowledge about the effect of chemical conditioners on the reduction of the deleterious effects caused by salinity on crops is of great importance for the expansion of the cultivation of vegetable crops such as zucchini in the semi-arid region of the Northeast. In this context, the objective of the present study was to evaluate the effect of the foliar application of hydrogen peroxide as a mitigator of salt stress on the gas exchange, production, and postharvest fruit quality of zucchini cultivated in a hydroponic system. The study was conducted in NFT-type (Nutrient Film Technique) hydroponic system in a greenhouse, in Pombal — PB, Brazil. The experimental design was completely randomized, in a 4 × 4 factorial scheme, corresponding to four levels of electrical conductivity of the nutrient solution - ECns (2.1 (control); 3.6; 5.1 and 6.6 dS m−1), and four concentrations of hydrogen peroxide - H2O2 (0; 20; 40 and 60 μM), with three replicates. Nutrient solution with electrical conductivity above 2.1 dS m−1 caused a reduction in gas exchange and the total number of fruits of zucchini. An increase in nutrient solution salinity levels increased the total soluble solids content of the fruits and the initial fluorescence of zucchini. Under conditions of nutrient solution salinity above 2.1 dS m−1, hydrogen peroxide could not mitigate the effects of salt stress. Application of 20 μM of H2O2 when the plants were grown in a nutrient solution of 2.1 dS m−1 promoted higher total fruit weight and basal diameter of the fruits.

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Section: Methodsmentioning

confidence: 99%

Gas Exchange and Hydroponic Production of Zucchini Under Salt Stress and H2o2 Application

et al. 2022

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“…Due to the lack of studies with H 2 O 2 in the zucchini cv. Caserta crop and other vegetables, the concentrations used in this experiment were based on a study with cashew (L. de P. Souza et al, 2019) and soursop (Veloso et al, 2020), while the salt levels in the nutrient solution were based on the assay of Putti, Silva, Silva, Gabriel and Klar (2018).…”

Section: Seminamentioning

confidence: 99%

“…This is a plant tolerance mechanism to reduce the absorption of water with salts and mitigate toxicity (Lima et al, 2021). Putti et al (2018) evaluated the cultivation of zucchini under salt stress conditions (ECw from 0 to 5 dS m -1 ) and found a reduction of 1.64 g in the dry biomass of the zucchini root with each unit increment of ECw, at 30 DAT. led to the accumulation of 13.11 g plant -1 under foliar application of 60 μM.…”

Section: Tablementioning

confidence: 99%

Hydrogen peroxide and saline nutrient solution in hydroponic zucchini culture

Dantas

Lima

Gheyi

et al. 2022

Semina: Ciênc. Agrár.

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Saline water has been used in irrigation due to the limited availability of fresh water, especially in arid and semi-arid regions. However, the use of this type of water can affect crop growth and development. Studies have tested the use of chemical conditioners to minimize the negative effects of salinity on plants. In this scenario, the present study examined the role of hydrogen peroxide in mitigating the negative effects of salt stress on zucchini plants grown in a hydroponic system. The study was carried out in a greenhouse in Pombal - PB, Brazil. The NFT (nutrient film technique) hydroponic system was employed. A randomized complete experimental design was set up with a 4 × 4 factorial arrangement consisting of four levels of electrical conductivity in the nutrient solution (ECns: 2.1 [control], 3.6, 5.1, and 6.6 dS m-1) and four concentrations of hydrogen peroxide (H2O2: 0, 20, 40, and 60 μM), in three replicates. Foliar spraying with H2O2 at 60 and 40 μM associated with the nutrient solution of 2.1 dS m-1 increased stem diameter and root length, respectively, at 47 days after transplanting. However, at ECns higher than 2.1 dS m-1, the application of H2O2 at the concentrations of 60 and 40 μM intensified salt stress, reducing stem diameter and root length. Nutrient solution salinity levels above 2.1 dS m-1 reduce photosynthetic pigments; the number of leaves; leaf area; the length of the main branch; and the dry biomass of stems, leaves, and roots of zucchini plants. Chlorophyll b and carotenoid contents are the variables most sensitive to changes in salinity levels.

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“…Under conditions of salt stress, plants have a delay in leaf production, necrosis of the aerial part and roots, and reductions in leaf area and photosynthetic activity, which affect their growth (VELOSO et al, 2021). Several studies have been carried out to evaluate the effects of salinity on zucchini crop, such as Putti et al (2018) and Dantas et al (2022b).…”

Section: Introductionmentioning

confidence: 99%

Zucchini cultivation under salt stress and exogenous application of paclobutrazol

Lacerda,

Laurentino,

Bonou

et al. 2024

Rev. Caatinga

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Salinity is considered an obstacle to the production system that limits the growth and yield of crops around the world. Therefore, it is essential to develop strategies to minimize the effects of salinity and increase yield, especially in the semi-arid region of the Northeast, which has limited water resources of good quality for irrigation. The objective was to evaluate the effects of applying paclobutrazol on zucchini crop under salt stress. The experiment was conducted in a greenhouse, in a randomized block experimental design, in a 2 × 5 factorial scheme, with two salinity levels of irrigation water (0.6 and 4.0 dS m-1) and five concentrations of paclobutrazol - PBZ (0; 2; 4; 6 and 8 g L-1), and with four repetitions. Application of 8 mg L-1 PBZ increases stem diameter in zucchini under irrigation of 4.0 dS m-1. Chlorophyll b and total chlorophyll contents increase with PBZ concentration of 4 mg L-1 and irrigation of 0.6 dS m-1. PBZ concentration of 4 mg L-1 increases the relative water content while reducing electrolyte leakage in zucchini under salinities of 4.0 and 0.6 dS m-1 respectively. Root, stem and leaf dry mass of zucchini increases when plants are irrigated with water of 0.6 dS m-1 and subjected to PBZ concentration of 8 mg L-1. PBZ concentrations do not attenuate the effects of salinity on leaf area, crown volume and diameter, vegetative vigor index, chlorophyll a and carotenoids.

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Crescimento E Produção Da Abobrinha Sob Irrigação Com Água Salobra

Cited by 7 publications

References 10 publications

Gas Exchange and Hydroponic Production of Zucchini Under Salt Stress and H2o2 Application

Gas Exchange and Hydroponic Production of Zucchini Under Salt Stress and H2o2 Application

Hydrogen peroxide and saline nutrient solution in hydroponic zucchini culture

Zucchini cultivation under salt stress and exogenous application of paclobutrazol

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