Vigour in maize seeds: influence on seedling development under conditions of salt stress

Silva, Rosemeire Carvalho da; Grzybowski, Camila Ribeiro de Souza; Panobianco, Maristela

doi:10.5935/1806-6690.20160059

Cited by 11 publications

(9 citation statements)

References 16 publications

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“…Ducke (Nogueira et al, 2014), Petiveria alliacea L. (Lavezo et al, 2015), Orobanche crenata Vell. (Moral et al, 2015), Cucumis sativus L. (Albuquerque et al, 2016), and Zea mays L. (Silva et al, 2016). Toxic concentrations of these ions (Na + , K + , Ca 2+ , Mg 2+ ) affect other physiological and metabolic processes of embryonic tissues, including cellular division and differentiation, enzyme activity, and the uptake and distribution of nutrients.…”

Section: Degrees Of Freedommentioning

confidence: 99%

Germination of chia seeds submitted to saline stress

et al. 2020

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Abstract Salinity, of both soil and water, is one of the main causes of crop yield decline. Within this context, the objective of this study was to evaluate the influence of different salts on the germination of chia seeds. The experiment was conducted in a BOD chamber at a constant temperature of 20 °C and in the presence of light. The seeds were placed on paper soaked with aqueous solutions of calcium chloride (CaCl2), sodium chloride (NaCl), potassium chloride (KCl), and magnesium chloride (MgCl2), at the osmotic potentials zero, -0.10, -0.20, -0.30, and -0.40 MPa. The effect of the salinity was evaluated using a germination test, with counts on days 7 and 14 after sowing. Based on the results, chia seeds tolerate concentrations of NaCl to -0.4 MPa and KCl to -0.20 MPa. The salts CaCl2 and MgCl2 had a negative effect on the germination and vigor of the chia seeds for the osmotic potentials -0.30 MPa and -0.20 MPa, respectively.

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Section: Degrees Of Freedommentioning

confidence: 99%

Germination of chia seeds submitted to saline stress

et al. 2020

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“…There was a significant decrease at a potential of -0.8 MPa, when only 37% of the seeds germinated, corresponding to a reduction of approximately 50% in relation to the control. Germination in maize seeds was not altered by the addition of salt, however, in less vigorous batches, there was a reduction of 3 and 4% in relation to the control (Silva, Grzybowski, & Panobianco, 2016). Deuner, Maia, Deuner, Almeida and Meneghello (2011), working with kidney beans, found that in the absence of salt, the evaluated genotypes showed a mean germination of 93%, with values remaining constant up to a concentration of 100 mM of NaCl (-0.25 MPa).…”

Section: Resultsmentioning

confidence: 85%

Germination and vigour in genotypes of forage sorghum at different levels of water and salt stress

Nunes

Cruz

Pinheiro

et al. 2020

Semina: Ciênc. Agrár.

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Salinity and water deficiency are abiotic factors which have a strong impact on agricultural activities, especially in arid and semi-arid regions. The aim of this research was to analyse the tolerance of two genotypes of forage sorghum, EA 116 and BRS Ponta Negra, to different levels of water and salt stress during germination. The conditions of water and salt stress were simulated by moistening the substrate with a solution of mannitol and of sodium chloride (NaCl) respectively, with the water potential adjusted to 0 (distilled water), -0.1, -0.2, -0.3, -0.4, -0.5 and -0.6 MPa. The variables under analysis were germination percentage, first count, germination speed index, shoot and root length, seedling dry weight, electrolyte leakage and leaf Na+/K+ ratio. The experiment was conducted in a completely randomised design, and distributed in a 2 (genotypes) × 2 (stress condition) × 7 (osmotic potential) factorial scheme, with four replications. The EA 116 and BRS Ponta Negra genotypes show greater tolerance to water stress. The EA 116 cultivar maintained germination under water stress from 0 to -0.6 MPa and saline stress from 0 to -0.4 MPa.

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“…Eleven elite accessions from four Passiflora species of commercial interest were used, with prior characterization and evaluation of genetic variability degree of passionfruit cultivated in Colombia, as a basis for a breeding program (Ocampo et al, 2013), and from different gene banks from various institutions (Table 1) Studies have shown that soil salinity decreases potassium levels in plant shoots (Cruz et al, 2006). As in this study, the authors reported that the increase in sodium concentration of the external medium decreases tissue potassium levels of corn (Silva et al, 2016) and yellow passionfruit plants (Cruz et al, 2006) According to some studies, salinity decreases the calcium content in shoots of corn (Garcia et al, 2007) and yellow passionfruit plants (Cruz et al, 2006). Similar to this work, these authors reported that the increase in the sodium Changes in the membrane where calcium is a stabilizing ion can lead to increased sensitivity of the cultivar to saline stress, given the selectivity of the membranes in the processes of absorption and ion compartmentalization (Rizwan et al, 2015).…”

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confidence: 64%

“…Maintaining low Na + /Ca ++ and Na + / Mg ++ proportions is an important criterion for characterizing plant tolerance to salinity (Wang et al, 2014). A high Na + /Ca ++ ratio causes Na + to move to Ca ++ in cell membrane, leading to a loss of its integrity, resulting in an imbalance in ion absorption and reduction of the selectivity of Na + /Ca ++ and Na + /Mg ++ in roots (Silva et al, 2016). The Na + /Ca ++ , Na + /Mg ++ and Na + /K + leaf concentration ratios increases , proving important variables in nutritional study of plants under saline conditions.…”

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confidence: 99%

Proline and ions accumulation in four Passiflora species under water-saline stress

et al. 2018

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Water-saline stress is one of the factors limiting growth and crop production, with the induction of morphological, structural and metabolic changes in higher plants. This study aimed to evaluate the response of four species with ten accessions of Passiflora to saline stress and drought stress, and the accumulation of proline and content of cationic macronutrients and their relationships with sodium. The plants were grown under controlled conditions for seven months, watered with nutrient solution with additions of NaCl (100 mM) to achieve the desired conductivities (1.5, 2.5, 4.0, and 5.5 dS m-1) and constant substrate humidity of 100%, 66% and 33%. The concentrations of Na+, K+, Ca++, Mg++ and proline in the leaves were determined. Proline accumulation increased in salinized plants, especially in young leaves. Proline increase was evident in accessions tolerant and moderately tolerant to salinity. These results indicate that tolerance to salinity and water stress in Passiflora relates to an improved ability to exclude sodium and greater ability to accumulate proline for osmotic adjustment. The increased salinity of the nutrient solution increased sodium contents, relations Na+/Ca++, Na+/Mg++, Na+/K+, and decreased Ca++, Mg++ and K+ levels, reflecting the nutritional imbalance caused by progressive saline stress.

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Vigour in maize seeds: influence on seedling development under conditions of salt stress

Cited by 11 publications

References 16 publications

Germination of chia seeds submitted to saline stress

Germination of chia seeds submitted to saline stress

Germination and vigour in genotypes of forage sorghum at different levels of water and salt stress

Proline and ions accumulation in four Passiflora species under water-saline stress

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