Physiological indices and phytomass partition in precocious  dwarf cashew clones irrigated with saline waters

Lima, Geovani Soares de; Silva, Jailson Batista da; Soares, Lauriane Almeida dos Anjos; Gheyi, Hans Raj; Nobre, Reginaldo Gomes; Souza, Leandro de Pádua

doi:10.14295/cs.v11i0.3196

Cited by 5 publications

(6 citation statements)

References 25 publications

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“…Such a decrease in RDP can be considered a strategy that plants use to reduce the absorption of toxic ions, especially Na + and Cl -, and their consequent transport to the aerial part of the plant, hampering plant growth (Sá, Mesquita, Bertino, Silva, & Costa, 2013). A reduction in root dry phytomass accumulation due to salt stress has also been observed in other crops such as cashew (Lima et al, 2020b) and guava (Sá et al, 2016). Londrina, v. 42, n. 1, p. 137-154, jan./fev.…”

Section: Table 2 Summary Of the Analysis Of Variance For Stomatal Conmentioning

confidence: 70%

Gas exchange, growth, and quality of passion fruit seedlings cultivated with saline water

Lima

Andrade

Medeiros

et al. 2021

Semina: Ciênc. Agrár.

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This study was conducted to evaluate the gas exchange, growth, and quality of passion fruit cultivars under irrigation with waters of different salinity levels. The experiment was conducted in a greenhouse, in Pombal-PB, Brazil, using a randomized block design in a 5 ? 2 factorial arrangement, with five levels of electrical conductivity of irrigation water (0.3, 1.1, 1.9, 2.7, and 3.5 dS m-1) and two passion fruit cultivars (BRS Sol do Cerrado and Guinezinho), with three plants per plot and four replicates. The reduction in transpiration, intercellular CO2 concentration and CO2 assimilation rate in passion fruit plants grown with saline water was related to factors of stomatal and non-stomatal origin. Gas exchange and growth of passion fruit cultivars were negatively affected by water salinity from 0.3 dS m-1 at 75 days after sowing. Despite the reduction in the growth of the passion fruit cultivars, irrigation with water of up to 3.5 dS m-1 could be used to obtain seedlings with acceptable quality. Based on the relative yield of total dry phytomass, the passion fruit cultivars BRS Sol do Cerrado and Guinezinho were classified as moderately sensitive to water salinity during the seedling phase.

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Section: Table 2 Summary Of the Analysis Of Variance For Stomatal Conmentioning

confidence: 70%

Gas exchange, growth, and quality of passion fruit seedlings cultivated with saline water

Lima

Andrade

Medeiros

et al. 2021

Semina: Ciênc. Agrár.

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“…The maximum reduction was observed in plants subjected to spray with the estimated H 2 O 2 concentration of 32 μM (RDB=11.19 g plant -1 ). From the estimated H 2 O 2 concentration of 33 μM, there was an upward trend in RDB, similar to LDB, which diversion of energy destined for growth to activate and maintain membrane integrity, synthesis of organic solutes for osmoregulation, and/or protection of macromolecules and regulation of ionic transport and distribution in various organs within cells (Lima et al, 2020).…”

Section: Tablementioning

confidence: 86%

“…Lucena, Negreiros, Medeiros, Grangeiro, & Marrocos (2011) examined the growth of another curcubit, 'Quetzali' watermelon, grown under field conditions, using water with different salinity levels, and also found that water with higher electrical conductivity (3.98 dS m -1 ) reduced the accumulation of dry biomass, thus reducing plant growth. The reduction in biomass accumulation may be related to the decrease in chlorophyll levels, the photosynthetic rate of plants, and the diversion of energy destined for growth to activate and maintain membrane integrity, synthesis of organic solutes for osmoregulation, and/or protection of macromolecules and regulation of ionic transport and distribution in various organs within cells (Lima et al, 2020).…”

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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“…Cashew (Anacardium occidentale L.) is a fruit crop widely cultivated in Brazil, especially in the semiarid region of the Northeast, having great socioeconomic importance in the generation of employment and income (Lima et al, 2020a;Sousa et al, 2023). The Northeast of Brazil has a planted area of approximately 616,189 ha and accounts for about 99% of the national production, having the states of Ceará (42,597 tons), Rio Grande do Norte (33,912 tons) and Piauí (28,292 tons) as main producers (Suassuna et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Salicylic acid attenuates the harmful effects of salt stress on the morphophysiology of early dwarf cashew

et al. 2023

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Brazil is one of the largest cashew producers in the world, and its Northeast region stands out. However, cashew growth and development are negatively affected by irrigation with brackish water in its production. In this context, strategies have been employed to alleviate salt stress effects on plants. Among the strategies, the exogenous application of elicitor substances, such as salicylic acid, has stood out. Given the above, the objective of the present study was to evaluate the effect of foliar application of salicylic acid as an attenuator of salt stress on the morphophysiology of early dwarf cashew. The study was carried out in a greenhouse, in a randomized block design, in a 5 × 4 factorial arrangement, with five levels of electrical conductivity of the irrigation water - ECw (0.4, 1.2, 2.0, 2.8, and 3.6 dS m-1) and four concentrations of salicylic acid - SA (0, 1, 2, and 3 mM), with three replicates and one plant per plot. Irrigation with water of electrical conductivity above 0.4 dS m-1 negatively affected the leaf relative water content, gas exchange, photosynthetic pigments, and growth of plants. Salicylic acid at a concentration of 1 mM attenuated the effects of salt stress on electrolyte leakage, relative water content, gas exchange, synthesis of photosynthetic pigments, and growth of early dwarf cashew irrigated using water with ECw of up to 3.6 dS m-1, at 210 days after transplanting.

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Physiological indices and phytomass partition in precocious dwarf cashew clones irrigated with saline waters

Cited by 5 publications

References 25 publications

Gas exchange, growth, and quality of passion fruit seedlings cultivated with saline water

Gas exchange, growth, and quality of passion fruit seedlings cultivated with saline water

Hydrogen peroxide and saline nutrient solution in hydroponic zucchini culture

Salicylic acid attenuates the harmful effects of salt stress on the morphophysiology of early dwarf cashew

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