Physiological responses of inoculated and uninoculated peanuts under saline stress

Lima, Antonio Fabio da Silva; Santos, Max Ferreira dos; Oliveira, Matheus Lima; Sousa, Geocleber Gomes de; Filho, Paulo Furtado Mendes; Luz, Lucas Nunes da

doi:10.4136/ambi-agua.2643

Cited by 6 publications

(10 citation statements)

References 13 publications

(17 reference statements)

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“…there was an increase of 6.64%. The values of leaf temperature up to ECw of 3 dS m -1 were lower than the values found by Lima et al (2021) in peanut plants (Arachis Ypogeae, L.) irrigated with saline water. Similar results to the present study were found by Coelho et al (2018) in 10 genotypes of sorghum irrigated with saline water.…”

Section: Resultscontrasting

confidence: 66%

Gas exchanges and mineral content of corn crops irrigated with saline water

et al. 2021

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Inferior quality water can be used by agricultural producers in arid and semi-arid regions due to the lower availability of good-quality water. Therefore, the objective was to identify the influence of irrigation with saline water on gas exchange and leaf contents in corn (Zea mays L.) crop. The work was conducted in the field, in the experimental area of the Experimental Farm of the University of International Integration of Afro-Brazilian Lusofonia (UNILAB), Redenção-CE. The experimental design used in the research was randomized blocks, with five treatments: 1.0; 2.0; 3.0; 4.0 and 5.0 dS m -1 and four repetitions. At 45 days after sowing (DAS) the gas exchange variables were evaluated: transpiration, stomatal conductance, photosynthesis, internal CO 2 concentration, water use efficiency and leaf temperature. And at 110 DAS the contents of N, P, K, Ca and Mg in plant leaves. The saline stress due to saltwater irrigation leads to a reduction in photosynthesis, stomatal conductance, internal CO 2 concentration and transpiration in field maize plants. Salt stress reduces the levels of N, P, K, Ca and Mg mineral elements in maize leaves.

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Section: Resultscontrasting

confidence: 66%

Gas exchanges and mineral content of corn crops irrigated with saline water

et al. 2021

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“…The correlation found for A × Ci under recommended saturation (Figure 6b) reveals that the higher the internal CO 2 concentration, the higher the photosynthetic activity. This can be explained by the fact that the Ci is related to the activity of the ribulose‐1,5‐bisphosphate carboxylase‐oxygenase enzyme that, under favourable conditions, increases carboxylation and reduces the oxygenation of the photosynthetic process, resulting in better CO 2 use (Lima et al, 2021). Another finding worth mentioning is the significant relationship between Ca and GY under recommended saturation condition.…”

Section: Resultsmentioning

confidence: 99%

Soybean base saturation stress: Selecting populations for multiple traits using multivariate statistics

Pantaleão

Teodoro

Martínez

et al. 2021

J Agronomy Crop Science

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One of the main objectives of soybean breeding programs is the search for genotypes that are both high yielding and tolerant to abiotic stresses. Brazilian Cerrado, the main grain‐producing region in the country, is characterised by naturally acidic and low fertility soils that consequently have low base saturation. Therefore, identifying genotypes with good performance for favourable and low base saturation stress conditions is of fundamental importance for crop improvement. The objective of this study was to select F3 soybean populations for multiple traits under contrasting base saturation conditions. Field experiments were carried out in two crop seasons in randomised block design with three replicates and 10 F3 populations (P1, P2, P3, P4, P5, P6, P7, P8, P9 and P10). In the first experiment, F3 populations were evaluated without base saturation correction (V = 30%, low saturation), while in the second experiment, limestone was applied 3 months before the start to raise the base saturation to 60% (recommended saturation). We evaluated physiological, nutritional, agronomic and spectral variables. Multivariate analysis was performed to know the populations’ performance and the interrelationship between variables and populations in the saturation conditions evaluated. The F3 populations showed differential performance for all traits across the conditions tested, enabling the identification of the best populations for each specific condition and both base saturation environments. Population P2 stood out under both low and recommended base saturation conditions and can be used in F4 plant selection to obtain superior lines for physiological and agronomic traits and vegetation indices.

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“…On the contrary, the behaviour of the internal CO 2 concentration is related to the activity of the ribulose‐1,5‐bisphosphate carboxylase‐oxygenase enzyme which, under favourable conditions, increases carboxylation and reduces the oxygenation of the photosynthetic process, resulting in better CO 2 use (Lima et al, 2021). The higher internal CO 2 concentration in the genotypes (Table 4) can be attributed to the high photosynthetic activity of sugarcane.…”

Section: Discussionmentioning

confidence: 99%

“…Saccharum robustum TA B L E 1 Genus and species of the 32 Saccharum complex genotypes evaluated carboxylation and reduces the oxygenation of the photosynthetic process, resulting in better CO 2 use (Lima et al, 2021). The higher internal CO 2 concentration in the genotypes (Table 4) can be attributed to the high photosynthetic activity of sugarcane.…”

Section: G27 E G28mentioning

confidence: 99%

Impacts of saline stress on the physiology of Saccharum complex genotypes

Simões

Oliveira

Tardin

et al. 2021

J Agronomy Crop Science

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Knowledge of the physiological mechanisms in saline environment may boost sugarcane breeding programmes targeting abiotic stresses. Our hypothesis is that the physiology of Saccharum genotypes responds differently under salt stress. Thus, the objective of the study was to evaluate the physiological performance of Saccharum complex genotypes grown under presence and absence of saline stress. The experimental design used was randomized blocks arranged in a 32 × 2 factorial scheme (32 genotypes × 2 salinity levels). The presence of salinity provided higher mean values for photosynthetic rate in genotypes G4, G18, G22, G25 and G29 compared with the environment without salinity, with mean values (17.26, 21.49, 24.22 and 26.19 µmol CO2m−2s−1), respectively, for internal CO2 concentration in G2, G6, G9, G14, G17, G19, G23 and G29, with mean values (323.45, 399.64, 386.88, 412.14, 366.31, 250.48, 379.10 and 380.75 µmol CO2 mol air−1), respectively, for transpiration in G18, G24, G25 and G29, with mean values (5.05, 3.30, 4.39 and 4.01 mmol H2O m−2s−1), respectively, and for chlorophyll content in G3, G5, G6, G8, G10, G13, G20, G22, G23, G25, G31 and G32, with mean values (34.18, 43.01, 38.08, 32.38, 37.09, 37.18, 32.47, 38.38, 38.04, 36.95 and 33.32 SPAD units) respectively. Genotypes that under salt stress increase their physiological performance demonstrate superiority over others and should be considered in breeding programmes. Photosynthesis and transpiration is the most adequate combination for screening, but the spad index is the most viable tool because of its ease of determination and cost.

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Physiological responses of inoculated and uninoculated peanuts under saline stress

Cited by 6 publications

References 13 publications

Gas exchanges and mineral content of corn crops irrigated with saline water

Gas exchanges and mineral content of corn crops irrigated with saline water

Soybean base saturation stress: Selecting populations for multiple traits using multivariate statistics

Impacts of saline stress on the physiology of Saccharum complex genotypes

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