Trocas Gasosas Em Cultivares De Alface Crespa Em Cultivo Hidropônico Com Água Salina

Guimarães, Rafaela Félix Basílio; Júnior, Sebastião de Oliveira Maia; Nascimento, Ronaldo do; Melo, Daniele Ferreira de; Ramos, Jailton Garcia; Andrade, Jailma Ribeiro de

doi:10.7127/rbai.v13n4001091

Cited by 8 publications

(5 citation statements)

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“…The lowest E value was observed in plants irrigated with S 4 , 2.6 mmol H 2 O m -2 s -1 , a value 35% lower compared to that obtained in the first evaluation (Figure 3d). Guimarães et al (2019) reported that high salinity levels in irrigation water generated water stress in the plant and under water deficit conditions. Silva et al (2021) reported that there was a reduction in transpiration rate as one of the primary responses to water deficiency.…”

Section: Resultsmentioning

confidence: 99%

Eruca sativa plants modulate growth and gas exchange when cultivated under salinity stress after leaching fractions

Silva,

Carneiro,

Santos

et al. 2023

jaa

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The physiology of rocket plants at different salinity levels through irrigation water and leaching fractions was assessed. Four salinity levels of irrigation water: 0.10, 1.60, 3.10 and 4.60 dS m-1 and three leaching fractions: 0, 10 and 20% were applied. The physiological variables analyzed were photosynthetic rate, stomatal conductance, transpiration rate and photosynthetic pigment contents. The growth and biomass production were analyzed by: plant height, number of leaves, leaf area and partitioned and total plant fresh and dry mass, and root to aerial part ratio. The leaching fraction of 10% combined with irrigation with water salinity levels ranging from 0.10 to 0.88 dS m-1 resulted in greater plant height, leaf area and root, shoot and total dry mass. The leaching fraction of 20% with irrigation water with salinity levels from 0.10 to 2.7 dS m-1 generates higher leaf number, shoot fresh mass, root-to-shoot ratio, stomatal conductance, and photosynthetic rate. Irrigation water with a salinity level of 0.10 dS m-1 provides a higher transpiration rate for rocket plants. Irrigation water with a salinity level of 4.6 dS m-1 generates higher chlorophyll a, b and total (a + b) and carotenoid contents in rocket plants.

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Section: Resultsmentioning

confidence: 99%

Eruca sativa plants modulate growth and gas exchange when cultivated under salinity stress after leaching fractions

Silva,

Carneiro,

Santos

et al. 2023

jaa

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“…Due to the reductions observed in stomatal conductance and transpiration, the CO 2 assimilation rate was compromised when plants were irrigated with high-salinity water (4.3 dS m -1 ), with a reduction of 7.94 μmol m -2 s -1 when compared to plants cultivated with low-salinity water (0.3 dS m -1 ). Stomatal closure, induced by salinity, may have caused an imbalance in the photosynthesis process, because tomato is a plant with photosynthetic metabolism C3, which needs to keep the stomata open longer for CO 2 to be fixed by the RuBisCO enzyme in the Calvin cycle (GUIMARÃES et al, 2019). Pereira et al (2020) evaluated the tomato 'Santa Clara' and found a decrease in the CO 2 assimilation rate with the increase of NaCl concentration in the irrigation water, with reductions of 11.8, 24.1 and 49.4% when plants were subjected to 50, 100 and 150 mM of NaCl, respectively.…”

Section: Resultsmentioning

confidence: 99%

Biomass, Gas Exchange and Production of Cherry Tomato Cultivated Under Saline Water and Nitrogen Fertilization

et al. 2022

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Cherry tomato cultivation in the semi-arid region of northeastern Brazil is limited by water scarcity, so it is common to use water sources with high concentrations of salts in this region, which have a deleterious effect on plants, which can be alleviated through management strategies, and fertilization with nitrogen stands out. This study aimed to evaluate the growth, gas exchange and production of cherry tomato under irrigation with saline water and nitrogen fertilization. The experiment was carried out in a screened environment at the CCTA/UFCG in Pombal - PB from October 2020 to February 2021, using a randomized block design, in a 5 × 5 factorial scheme, with five levels of electrical conductivities of water - ECw (0.3; 1.3; 2.3; 3.3 and 4.3 dS m−1) and five nitrogen doses - ND (50; 75; 100; 125 and 150% of the recommended dose for the crop), with three replicates. Irrigation water salinity from 0.3 dS m−1 reduced stomatal conductance, transpiration, CO2 assimilation rate and production components of cherry tomato. Nitrogen fertilization from 50% of the recommendation reduced stomatal conductance, transpiration and CO2 assimilation rate of cherry tomato. Irrigation with water of electrical conductivity from 0.3 dS m−1 associated with nitrogen dose of 150% of the recommendation intensified the effect of salt stress on dry biomass accumulation in cherry tomato.

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“…Subsequently, fertilizer salts were added to the respective waters, according to the formulation by Furlani et al (1999), using the following quantities for 20 L: 15.0 g of calcium nitrate (15.5% N and 18.0% Ca), 10.0 g of potassium nitrate (12.0% N and 45.0% K), and 3.0 g of monoammonium phosphate (12.0% N and 51% P). Magnesium sulfate (11.0% and 9.0% Mg) and micronutrients (0.5% B, 0.5% Cu, 2.5% Fe, 2% Mn, 0.2% Mo, and 1.5% Zn) were provided by applying 8.0 g of the KSC Mix (Timac Agro/Vitas Portugal Lda., Lisboa, Portugal).…”

Section: Methodsmentioning

confidence: 99%

Hydroponic coriander grown under nutritional solutions prepared with brackish water of different cation prevalence

Navarro

Silva

Júnior

et al. 2023

Rev. bras. eng. agríc. ambient.

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The use of brackish water for preparation of nutrient solutions has several impacts on crop performance, depending on the water concentration and cation prevalence. Therefore, this study was conducted to evaluate production and water relations of coriander grown on nutrient solutions prepared with brackish waters with different cationic natures under hydroponic conditions. A randomized block experimental design with four replicates was used, in a 4 × 3 factorial arrangement. The treatments consisted of four electrical conductivities of the nutrient solution (1.6, 3.2, 4.8, and 6.4 dS m-1) which were prepared in waters with different salts (NaCl, CaCl2.2H2O, and MgCl2.6H2O). Salinity negatively affected the production and water relations of coriander grown in hydroponic system; plants grown on nutritive solutions with predominance of Na+ had higher total dry weight and shoot dry weights, as well as higher stomatal conductance. The largest leaf area was found when using the nutrient solution with predominance of Mg2+.

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Trocas Gasosas Em Cultivares De Alface Crespa Em Cultivo Hidropônico Com Água Salina

Cited by 8 publications

References 0 publications

Eruca sativa plants modulate growth and gas exchange when cultivated under salinity stress after leaching fractions

Eruca sativa plants modulate growth and gas exchange when cultivated under salinity stress after leaching fractions

Biomass, Gas Exchange and Production of Cherry Tomato Cultivated Under Saline Water and Nitrogen Fertilization

Hydroponic coriander grown under nutritional solutions prepared with brackish water of different cation prevalence

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