Production and Fiber Characteristics of Colored Cotton Cultivares under Salt Stress and H2O2

Veloso, Luana Lucas de Sá Almeida; Azevedo, Carlos Alberto Vieira de; Nobre, Reginaldo Gomes; Lima, Geovani Soares de; Bezerra, J. R. C.; Silva, André Alisson Rodrigues da; Fátima, Reynaldo Teodoro de; Gheyi, Hans Raj; Soares, Lauriane Almeida dos Anjos; Fernandes, Pedro Dantas; Lima, Vera L. A. de; Chaves, Lúcia Helena Garófalo

doi:10.3390/plants12112090

Cited by 6 publications

(4 citation statements)

References 40 publications

(32 reference statements)

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“…However, it must be highlighted that the application of H 2 O 2 at concentrations of 25 and 50 µM increased the production components in plants subjected to water with an electrical conductivity of 0.3 dS m −1 . Similarly, Veloso et al [42] studied colored cotton cv. 'BRS Jade' grown under salt stress and observed that the application of 75 µM of H 2 O 2 increased the seed cotton and lint cotton weights under irrigation with 0.8 dS m −1 water.…”

Section: Discussionmentioning

confidence: 99%

Hydrogen Peroxide Alleviates Salt Stress Effects on Gas Exchange, Growth, and Production of Naturally Colored Cotton

Nóbrega,

Gomes,

Soares

et al. 2024

Plants

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Cotton is one of the most exploited crops in the world, being one of the most important for the Brazilian Northeast. In this region, the use of irrigation is often necessary to meet the water demand of the crop. Water is often used from underground wells that have a large amount of salt in their constitution, which can compromise the development of crops, so it is vital to adopt strategies that reduce salt stress effects on plants, such as the foliar application of hydrogen peroxide. Thus, the objective of this study was to evaluate the effects of foliar application of hydrogen peroxide on the gas exchange, growth, and production of naturally colored cotton under salt stress in the semi-arid region of Paraíba, Brazil. The experiment was carried out in a randomized block design in a 5 × 5 factorial scheme, with five salinity levels of irrigation water—ECw (0.3, 2.0, 3.7, 5.4 and 7.1 dS m−1)—and five concentrations of hydrogen peroxide—H2O2 (0, 25, 50, 75 and 100 μM), and with three replicates. The naturally colored cotton ‘BRS Jade’ had its gas exchange, growth, biomass production, and production reduced due to the effects of salt stress, but the plants were able to produce up to the ECw of 3.97 dS m−1. Foliar application of hydrogen peroxide at the estimated concentrations of 56.25 and 37.5 μM reduced the effects of salt stress on the stomatal conductance and CO2 assimilation rate of cotton plants under the estimated ECw levels of 0.73 and 1.58 dS m−1, respectively. In turn, the concentration of 12.5 μM increased water-use efficiency in plants subjected to salinity of 2.43 dS m−1. Absolute and relative growth rates in leaf area increased with foliar application of 100 μM of hydrogen peroxide under ECw of 0.73 and 0.3 dS m−1, respectively. Under conditions of low water salinity (0.3 dS m−1), foliar application of hydrogen peroxide stimulated the biomass formation and production components of cotton.

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Section: Discussionmentioning

confidence: 99%

Hydrogen Peroxide Alleviates Salt Stress Effects on Gas Exchange, Growth, and Production of Naturally Colored Cotton

Nóbrega,

Gomes,

Soares

et al. 2024

Plants

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“…On the other hand, the beneficial effect of H 2 O 2 at the concentration of 23 µM on NFP may be associated with its function of signaling molecule and protection against biotic and abiotic stresses [36]. Hydrogen peroxide can activate the defense system, contributing to a rapid adaptation of the plant to conditions unfavorable to its development [20,28].…”

Section: Discussionmentioning

confidence: 99%

“…Given the growing need to use brackish water in agriculture, especially in semi-arid regions, searching for strategies that enable such use has been a great challenge for the scientific community. Among the strategies, the use of hydrogen peroxide (H 2 O 2 ) stands out because, when applied at appropriate concentrations, it can contribute to reducing the harmful effects of salinity and enable agricultural cultivation [19,20]. Hydrogen peroxide is a reactive oxygen species (ROS), which acts as a key signaling molecule in mediating physiological and metabolic processes, alleviating the adverse effects of stress on plants by increasing the activity of antioxidant enzymes and membrane stability, which in turn increases plant's tolerance to abiotic stresses [21,22].…”

Section: Introductionmentioning

confidence: 99%

Hydroponic Cultivation of Laranja Cherry Tomatoes under Salt Stress and Foliar Application of Hydrogen Peroxide

Guedes,

Silva,

Lima

et al. 2023

Agriculture

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The objective of this study was to evaluate the effect of the foliar application of hydrogen peroxide (H2O2) in mitigating the effects of salt stress on cherry tomato cultivation in a hydroponic system. The experiment was conducted in a greenhouse, using a Nutrient Film Technique hydroponic system. The experimental design used was completely randomized in a split-plot scheme, with four levels of electrical conductivity of the nutrient solution—ECns (2.1, 2.8, 3.5, and 4.2 dS m−1), considered as plots, and five H2O2 concentrations (0, 12, 24, 36, and 48 µM), regarded as subplots, with four replicates and two plants per plot. An increase in the electrical conductivity of the nutrient solution negatively affected the production components of cherry tomatoes. However, it did not affect the post-harvest quality of the fruits. Despite the reductions observed in the production components due to the increase in the electrical conductivity of the nutrient solution, foliar application of H2O2 at concentrations esteemed between 22 and 25 µM attenuated the deleterious effects of salt stress on the number of fruits and ascorbic acid content and increased the total fruit production per plant of cherry tomatoes.

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“…In addition, the seeds of these genotypes in a new production cycle will be more tolerant to water deficit. It is worth mentioning that the use of naturally colored fiber cotton genotypes can reduce production costs in the textile industry, since there is no need for dyeing, consequently reducing damage to human health and the environment [ 21 , 22 ].…”

Section: Introductionmentioning

confidence: 99%

Irrigation Strategies with Controlled Water Deficit in Two Production Cycles of Cotton

Guedes

Nobre

Soares

et al. 2023

Plants

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Water scarcity is one of the main abiotic factors that limit agricultural production. In this sense, the identification of genotypes tolerant to water deficit associated with irrigation management strategies is extremely important. In this context, the objective of this study was to evaluate the morphology, production, water consumption, and water use efficiency of colored fiber cotton genotypes submitted to irrigation strategies with a water deficit in the phenological phases. Two experiments were conducted in succession. In the first experiment, a randomized block design was used in a 3 × 7 factorial scheme, corresponding to three colored cotton genotypes (BRS Rubi, BRS Jade, and BRS Safira) in seven irrigation management strategies with 40% of the real evapotranspiration (ETr) varying the phenological stages. In the second experiment, the same design was used in a 3 × 10 factorial arrangement (genotypes × irrigation management strategies). The water deficit in the vegetative phase can be used in the first year of cotton cultivation. Among the genotypes, ‘BRS Jade’ is the most tolerant to water deficit in terms of phytomass accumulation and fiber production.

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Production and Fiber Characteristics of Colored Cotton Cultivares under Salt Stress and H2O2

Cited by 6 publications

References 40 publications

Hydrogen Peroxide Alleviates Salt Stress Effects on Gas Exchange, Growth, and Production of Naturally Colored Cotton

Hydrogen Peroxide Alleviates Salt Stress Effects on Gas Exchange, Growth, and Production of Naturally Colored Cotton

Hydroponic Cultivation of Laranja Cherry Tomatoes under Salt Stress and Foliar Application of Hydrogen Peroxide

Irrigation Strategies with Controlled Water Deficit in Two Production Cycles of Cotton

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