Physiological potential of sorghum seeds under discontinuous hydration and water deficiency conditions

Sarmento, Erivanessa Costa Sousa; Oliveira, Fernando Sarmento de; Cabral, Felipe Augusto Sombra; Oliveira, Daniel Farias de; Dutra, Alek Sandro

doi:10.5935/1806-6690.20200069

Cited by 3 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, in the DHCs with attenuators, the seedlings changed from sensitive to moderately sensitive to salinity, with biomass losses lower than 60% for BRS 5037 Cruzeta and lower than 50% for BR 206. The increase in dry mass occurred after DHCs with salt stress tolerance elicitors, which corroborates the research results on using DHCs with water to mitigate stress [17][18][19]. The response demonstrates that the dehydration process cannot erase this hydration memory, which is already a cause of stress, and the seeds have greater tolerance to the new stress [41].…”

Section: Discussionsupporting

confidence: 84%

Discontinuous Hydration Cycles with Elicitors Improve Germination, Growth, Osmoprotectant, and Salt Stress Tolerance in Zea mays L.

et al. 2023

View full text Add to dashboard Cite

Saline stress impairs germination and initial plant growth. However, discontinuous hydration cycles induce osmotic tolerance in seeds and can improve the response of maize seeds to saline stress. The objective of this study was to evaluate the action of discontinuous hydration cycles with different salt stress tolerance elicitors on germination, growth, and osmotic adjustment of maize cultivars. Maize seeds of BR 206 and BRS 5037 Cruzeta cultivars were subjected to the following treatments: 0.0 mmol of NaCl (control), 250 mmol of NaCl (salt stress), salt stress + three discontinuous hydration cycles (DHCs) of seeds in water, salt stress + DHCs with gibberellic acid, salt stress + DHCs with hydrogen peroxide, salt stress + DHCs with salicylic acid, and salt stress + DHCs with ascorbic acid. Salt stress reduced the germination, growth, and biomass accumulation in maize seedlings—the BR 206 cultivar outperformed BRS 5037 Cruzeta. Discontinuous hydration cycles with water failed to improve the salt stress tolerance of maize seeds. However, discontinuous hydration cycles with gibberellic acid, hydrogen peroxide, and salicylic acid promoted salt stress tolerance in maize due to increased synthesis of osmoprotectants. Our results revealed salicylic acid is appropriate for discontinuous hydration cycles in maize seeds.

show abstract

Section: Discussionsupporting

confidence: 84%

Discontinuous Hydration Cycles with Elicitors Improve Germination, Growth, Osmoprotectant, and Salt Stress Tolerance in Zea mays L.

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Similar results were found by Pereira et al (2012), with a reduction in the values for fi rst germination count in seeds of Urochloa decumbens and Urochloa ruziziensis when subjected to water stress. This reduction may have been due to the prolongation of phase III, as described by Bewley and Black (1994); during this phase, the seed has a greater need for water, and PEG interferes with the viscosity of the water and solubility of the oxygen, which are necessary for germination (SARMENTO et al, 2020).…”

Section: Resultsmentioning

confidence: 99%

“…Water is essential for germination to occur, as it is directly or indirectly involved in all stages of germinative metabolism (MARCOS FILHO, 2015). Water stress at the start of imbibition can therefore to harm the sequence of germinative events in the seed during water absorption, leading to a delay and reduction in both the percentage and speed of germination (SARMENTO et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Potassium silicate as an inducer of abiotic stress resistance in grain sorghum seeds

Pinheiro,

Nunes

et al. 2022

RCA

View full text Add to dashboard Cite

Sorghum is an important crop that can absorb and accumulate abundant Si ranging, improving tissue tolerance to the water and salt stress and reducing sodium absorption. T hus, the objective was to verify the induction of resistance in germination and seedling growth of sorghum seeds to salt and water stress during germination due to treatment with silicon. Two experiments were carried out with seeds of two sorghum cultivars (EA03 and EA955) were solution of potassium silicate solutions at concentrations of 0, 0.3, 0.6, 0.9 and 1.2 g L -1 , in the first experiment and seeds were submitted to water stress using PEG 6000 (0, -0.2, -0.4, -0.6 and -0.8 MPa) in the second experiment were submitted to salt stress using NaCl (0, 75, 150 and 225 mM). Were analysed, germination, first germination count, shoot and root length, shoot to root ratio and seedling dry weight. The studied genotypes showed similar behavior when treated with potassium silicate. The presence of silicon in the treatment of seeds when exposed to salt stress has no effect on germination, but attenuates salinity damage related to seedling growth. Silicon attenuates the effects of water stress on sorghum seeds, by maintaining germination up to the potential of -0.6 Mpa, and providing better root development. However, the treatment with potassium silicate does not prevent the damage caused by high levels of water and salt stress, only attenuating its effects, thus, more studies are needed to better clarify the effects of Si on seeds.

show abstract

Influence of Abiotic Stresses on Morphophysiological Characteristics and Biological Value of Grain Sorghum bicolor (L.) Moench

Kibalnik

Sazonova

Bochkareva

et al. 2023

IJPB

View full text Add to dashboard Cite

Sorghum is the agricultural crop most adaptable to the effects of abiotic factors, able to tolerate prolonged soil and air droughts, changes in air temperature, insufficient precipitation, salinization, acidification of soils, and many others with the least loss of yield compared to traditional crops such as wheat and barley. However, even among sorghum genotypes, there are samples with varying degrees of resistance to stressors, for example, drought. The aim of this study is a comprehensive study of the influence of abiotic factors on the physiological characteristics and biochemical parameters of sorghum grain. The experiment was carried out on the experimental field and laboratory conditions of the Rossorgo Institute. Drought resistance of plants is determined in the initial phase of development and during the flowering period by the degree of seed swelling in hypertonic solutions and the water regime of the leaves (total water content, water deficiency, moisture loss, and water-holding capacity). The quality of the grain is determined using the spectrophotometry method for the main biochemical components, and likewise, the separation of the protein into fractions. The growing conditions of plants in 2021–2022 differ significantly in terms of hydrothermal indicators. As a result of the conducted research for use in breeding programs for the creation of new varieties and hybrids with increased stress resistance selected samples L-65/14, Magistr has high drought resistance in the degree of seed swelling in hypertonic solutions (55.2–58.9%), which turned out to be at the level of the control variant (61.6–63.7%), and indicators of the water regime of the leaves (total water content of leaf tissues—74.20–77.83%; water-retaining capacity—83.77–85.56%; low moisture loss for 1 h/day—2.86–3.01%). These samples were characterized by the biological value determined by the optimal ratio of major indicators of grain and protein fractions: albumin (16.59–22.75%), globulin (8.13–9.09%), glutelin (9.09–14.01%), and prolamin (5.79–11.50%).

show abstract

Physiological potential of sorghum seeds under discontinuous hydration and water deficiency conditions

Cited by 3 publications

References 0 publications

Discontinuous Hydration Cycles with Elicitors Improve Germination, Growth, Osmoprotectant, and Salt Stress Tolerance in Zea mays L.

Discontinuous Hydration Cycles with Elicitors Improve Germination, Growth, Osmoprotectant, and Salt Stress Tolerance in Zea mays L.

Potassium silicate as an inducer of abiotic stress resistance in grain sorghum seeds

Influence of Abiotic Stresses on Morphophysiological Characteristics and Biological Value of Grain Sorghum bicolor (L.) Moench

Contact Info

Product

Resources

About