Crescimento inicial da cultura da fava irrigada sob estresse salino e hídrico

Filho, João Valdenor Pereira; Mendonça, Andreza de Melo; Sousa, Geocleber Gomes de; Viana, Thales Vinícius de Araújo; Ribeiro, Rute Maria Rocha; Canjá, Juvenaldo Florentino

doi:10.7127/rbai.v14n101139

Cited by 6 publications

(6 citation statements)

References 12 publications

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“…This inhibition of branch growth is related to the osmotic and ionic effects of salt stress, resulting in disturbances of water relations, ion toxicity, and inhibition of cell elongation (SOUSA et al, 2016). Similar results were reported by Oliveira et al (2014) for gherkin plants, and by Freitas et al (2021) when analyzing the morphological responses of peanut (Arachis hypogaea L.) grown under salt stress.…”

Section: Resultssupporting

confidence: 75%

Morphophysiology and inorganic solutes in watermelon irrigated with brackish water in different planting systems

Silva Junior,

Lacerda,

Sousa

et al. 2023

Rev. Caatinga

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Irrigation with brackish water reduces watermelon yield in the Brazilian semiarid region, requiring the establishment of management strategies that reduce the negative impacts caused by salt stress. The objective of this study was to evaluate the morphophysiology and concentration of inorganic solutes in watermelon crops subjected to different electrical conductivities of the irrigation water, using hardened seedlings or direct sowing. The experiment was conducted in the Baixo Acarau Irrigated Perimeter, in the state of Ceara, Brazil. A randomized complete block design was used, with split plots and four replications. The plots consisted of four electrical conductivity levels of the irrigation water (0.3, 1.5, 3.0, and 4.5 dS m-1), and the subplots consisted of three planting systems: DS = direct sowing; TP1 = transplanting of seedlings produced with moderate-salinity water (1.5 dS m-1), and TP2 = transplanting of seedlings produced with low-salinity water (0.3 dS m-1). The following variables were analyzed: vegetative growth, leaf gas exchange, and inorganic solutes. The use of watermelon seedlings produced with moderate-salinity water does not result in higher salt tolerance during the vegetative growth stage. Na+, Cl-, and Ca2+ leaf concentrations increase as the salt stress level is increased, regardless of the planting method. However, plants from seedlings (TP1 and TP2) have higher Na+ and Cl- concentrations when subjected to high salinity levels. The direct sowing method resulted in better performance of growth variables, mainly under low salinity levels.

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Section: Resultssupporting

confidence: 75%

Morphophysiology and inorganic solutes in watermelon irrigated with brackish water in different planting systems

Silva Junior,

Lacerda,

Sousa

et al. 2023

Rev. Caatinga

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“…However, the smaller leaf area when irrigated with water of higher salinity corroborates with Pereira Filho et al (2020), when affirming that the negative influence of salinity on leaf area may be related to the action of the osmotic part that hinders the absorption of water by the plant, as well as the toxicity caused by the excess of certain ions. Similarly, Sousa et al (2021) observed a reduction in the leaf area of the bean crop when irrigated with increasing saline water at a leaching fraction of 15%.…”

Section: Resultssupporting

confidence: 60%

“…Results opposite to this study, are reported by Lacerda et al (2011), when describing that the reduction of aboveground dry matter in crops irrigated with saline water is related to the energy shift as a result of increasing soil salinity levels. Work performed by Pereira Filho et al (2020) in bean culture also detected a reduction in the dry mass of the aerial part with the increase of salts in the irrigation water. For root dry matter (RDM) there was a quadratic effect for irrigation water of higher salinity, with a maximum value of 0.49 g occurring in the leaching fraction of 10% while, for water of lower salinity there was linear growth on the order of 23.81% with increasing leaching fraction (Figure 5).…”

Section: Resultsmentioning

confidence: 88%

Salt stress and leaching fraction in cowpea culture

Cambissa

Sousa

Guilherme

et al. 2022

RBAI

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Salt stress negatively affects the sense, the objective of this work was to evaluate growth and soil saturation extract parameters (EC and pH) in cowpea crop irrigated with saline water under different leaching fractions. The experiment was conducted in the experimental area of the Auroras Seedling Production Unit, which belongs to the Universidade da Integração Internacional da Lusofonia Afro used was entirely randomized, in a 5x2 factorial scheme, referring to five 15 and 20%) and two electrical conductivities of the irrigation water (0.3 and 4.0 dS m repetitions. The leaf area, aboveground and root dry mass were negatively affected with the increase of the leaching fraction, however, with less intensity with water of lower salinity. Increasing the leaching fraction increased the number of leaves, stem diameter, and pH, but more efficiently with the lower salinity water. The increase of the leaching fraction associated with increased the electrical conductivity of the

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“…In a study conducted with 15 alfalfa populations under salt stress, it was observed that the root biomass per plant under salinity levels of 18.3 and 24.5 dS m -1 were reduced, respectively, by 18 and 49% (CORNACCHIONE; SUAREZ, 2015). These reductions are related to several mechanisms such as the reduction of cell turgor (COSTA; PINHO; PARRY, 2008), etiolation of plants (AGUIAR et al, 2008), restriction in the water absorption process (COELHO, 2013), and reduction in the number of leaves (OLIVEIRA et al, 2006).…”

Section: Resultsmentioning

confidence: 99%

Tolerance of Alfalfa Varieties Subjected to Salinity

Silva,

Simões,

Guimarães

et al. 2023

R_I

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The aim of this study was to evaluate the salinity tolerance of alfalfa varieties, aiming at their inclusion in production systems that use water with high levels of salts for irrigation or saline soils. The experiment was conducted in a greenhouse, in a 3x5x3 factorial scheme, three alfalfa varieties (LE-N4, Crioula and DK-192), five salinity levels (0; 3.5; 5.0; 7.0; 10 .5 and 14.0 dS m-1) and three shoots of the aerial part, with four repetitions. For irrigation management, lysimeters were installed. Fresh and dry aboveground and root biomass, chlorophyll, water use efficiency and enzymatic activity were analyzed. The increase in salinity reduced fresh and dry aboveground and root biomass, chlorophyll and water use efficiency. Salinity altered the biochemical responses of the evaluated varieties. DK-192 showed higher production of fresh and dry aboveground biomass. LE-N4 was more sensitive to salt stress, significantly reducing production from a salinity level of 7.0 dS m-1. The increased catalase activity for Crioula and DK-192 under salt stress conditions contributed to the higher production of fresh and dry aboveground biomass.

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Crescimento inicial da cultura da fava irrigada sob estresse salino e hídrico

Cited by 6 publications

References 12 publications

Morphophysiology and inorganic solutes in watermelon irrigated with brackish water in different planting systems

Morphophysiology and inorganic solutes in watermelon irrigated with brackish water in different planting systems

Salt stress and leaching fraction in cowpea culture

Tolerance of Alfalfa Varieties Subjected to Salinity

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