Resposta fisiológica de sementes de chia e linhaça ao estresse hídrico

Viana, Bruna Boucinha; Neves, Luiz Augusto Salles das

doi:10.21826/2446-8231201772202

Cited by 2 publications

(2 citation statements)

References 9 publications

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“…The reduction in germination due to the increase in water deficit caused by salt stress at -0.4 MPa was also observed in melon seeds by Pinheiro et al (2017). On the other hand, seeds of chia (Salvia hispânica L.) and sesame (Sesamum indicum L.) do not tolerate osmotic potentials of less than -0.15 and -0.2 MPa, respectively (Medeiros et al, 2015;Stefanello et al, 2017).…”

Section: Resultsmentioning

confidence: 80%

Physiological quality of seeds and growth of seedlings of chickpea under salt stress

Pimenta

Júnior

Fernandes

et al. 2021

RSD

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Salt stress is a condition that causes physiological changes in several species, the identifying cultivars tolerant to such conditions is essential to high salinity environments. The objective was to evaluate the physiological quality of seeds of chickpea cultivars to salt stress during germination and seedling growth. Two cultivars (‘BRS Cícero’ and ‘BRS Aleppo’) and five osmotic potentials simulated with sodium chloride solutions (0.0; -0.2; -0.4; -0.6 and -0.8 MPa), were evaluated by the test of germination speed index, mean germination time, epicotyl and primary root length, epicotyl and primary root fresh mass, epicotyl and the primary root dry mass of the seeds were evaluated. Significant interactions were found for all variables, indicating that there are cultivars with specific performance for a particular salt condition, and the simulated salt stress conditions negatively affected germination and seedling growth. Osmotic potentials of less than -0.4 MPa are harmful to the germination and growth of chickpea seedlings. The ‘BRS Cícero’ seeds showed a higher salt tolerance than ‘BRS Aleppo’. The cultivar BRS Aleppo has a longer epicotyl length compared to 'BRS Cícero' when subjected to the same conditions of salt stress.

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Section: Resultsmentioning

confidence: 80%

Physiological quality of seeds and growth of seedlings of chickpea under salt stress

Pimenta

Júnior

Fernandes

et al. 2021

RSD

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show abstract

“…The reduction of germination due to the increase in water deficit was also verified in melon seeds by Pinheiro et al (2017), who observed germination close to 50% at the potential of -0.4 MPa. By contrast, chia and sesame seeds do not tolerate osmotic potentials lower than -0.15 and -0.2 MPa, respectively (Medeiros et al, 2015;Stefanello et al, 2017).…”

Section: Cmentioning

confidence: 93%

Salicylic acid in the physiological priming of onion seeds subjected to water and salt stresses

Silva

Paiva

Leite

et al. 2019

Rev. bras. eng. agríc. ambient.

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This study aimed to evaluate the effect of physiological priming with salicylic acid on the mitigation of water and salt stresses on onion (Allium cepa L.) seeds. For this, seeds of onion, cultivar IPA 11, were soaked in salicylic acid solution (50 µM) for 24 h and placed to germinate at different water and saline potentials. For water stress, the experiment was conducted in a completely randomized design, in a 2 x 5 factorial scheme (salicylic acid with 0 and 50 µM and osmotic potentials of 0, -0.1, -0.2, -0.3, -0.4 MPa induced by polyethylene glycol 6000), with four repetitions of 50 seeds per plot. In salt stress, the adopted experimental design was completely randomized, with treatments distributed in a 2 x 4 factorial scheme (salicylic acid at concentrations of 0 and 50 µM and the osmotic potentials of 0, -0.3, -0.6 and -0.9 MPa induced by NaCl), in four repetitions of 50 seeds. For both experiments, germination, growth and accumulation of organic solutes were evaluated. Salicylic acid did not stimulate the germination of onion seeds in the absence of stress, but the application of 50 µM of salicylic acid increased the germination speed, growth and dry matter accumulation under conditions of water and salt stress. Onion plants were efficient in performing osmotic adjustment up to the potentials of -0.2 MPa induced by PEG 6000 under water stress and of -0.4 MPa induced by NaCl under salt stress.

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Resposta fisiológica de sementes de chia e linhaça ao estresse hídrico

Cited by 2 publications

References 9 publications

Physiological quality of seeds and growth of seedlings of chickpea under salt stress

Physiological quality of seeds and growth of seedlings of chickpea under salt stress

Salicylic acid in the physiological priming of onion seeds subjected to water and salt stresses

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