Effect of Habitat Conditions on Content and Quality of Lipids in Selected Oat Forms

Tobiasz-Salach, Renata; Witkowicz, Robert; Cieśłik, Ewa; Bobrecka-Jamro, D.

doi:10.15193/zntj/2011/76/066-077

Cited by 5 publications

(4 citation statements)

References 6 publications

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“…Naked cultivars are known to have a characteristically higher grain fat content. With the aim of energy use of cereals, it becomes more desirable to increase the fat content in grain, because its combustion gives twice as much energy as when burning the same amount of protein [84][85][86][87]. At higher doses of nitrogen, a lower calorific value of grain and straw was noted compared to objects without fertilization and fertilized with 40 kg N•ha −1 (Table 3).…”

Section: Energetic Value Of Grain and Strawmentioning

confidence: 99%

Oat as a Potential Source of Energy

Tobiasz-Salach,

Stadnik,

Bajcar

2023

Energies

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Oat (Avena sativa L.) is one of the agricultural crops that can be grown in marginal areas. Grain and straw are used mainly for food and fodder purposes. However, due to the high-fat content in the grain and the small amount of ash, it can be an attractive raw material for energy production. The biomass can be straw and oat grain. Grain should be intended for food purposes, but if it does not meet the quality requirements, it can be used for energy purposes. The aim of the experiment was to evaluate the energy usefulness of four oat cultivars depending on the applied level of nitrogen fertilization. The research results show that oat grain and straw can be used as fuel for energy purposes. The average calorific value of grain was 18.7 MJ·kg−1, and the ash content in dry matter was 2.03%. With the increase in the dose of nitrogen fertilization, a decrease in the calorific value of oat and straw grains and a decrease in ash content were noted. The findings show significant varietal differences. Oat straw had a lower calorific value and a higher ash content, which indicates its lower usefulness for energy purposes compared to grain.

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Section: Energetic Value Of Grain and Strawmentioning

confidence: 99%

Oat as a Potential Source of Energy

Tobiasz-Salach,

Stadnik,

Bajcar

2023

Energies

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“…Drought can diminish cereal yields by lowering the number of viable panicles and the number of grains per year and disrupting grain filling (lower thousand-grain weight) [ 27 ]. However, oats exhibit increased vulnerability to drought stress and require more water during the vegetative phase than other cereal crops [ 29 ]. When being sown in early spring, spring cereals require a longer time than winter cereals to reach the crucial stage of shooting at the stem, which increases the risk of drought-related losses due to a shortage of rainfall when the water stores in the soil runs out [ 30 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Soil Drought Stress on Selected Biochemical Parameters and Yield of Oat × Maize Addition (OMA) Lines

Warzecha,

Bocianowski,

Warchoł

et al. 2023

IJMS

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Plant growth and the process of yield formation in crops are moderated by surrounding conditions, as well as the interaction of the genetic background of plants and the environment. In the last two decades, significant climatic changes have been observed, generating unfavorable and harmful impacts on plant development. Drought stress can be considered one of the most dangerous environmental factors affecting the life cycle of plants, reducing biomass production and, finally, the yield. Plants can respond to water deficit in a wide range, which depends on the species, genetic variability within the species, the plant’s ontogenesis stage, the intensity of the stress, and other potential stress factors. In plants, it is possible to observe hybrids between different taxa that certain traits adopted to tolerate stress conditions better than the parent plants. Oat × maize addition (OMA) plants are good examples of hybrids generated via wide crossing. They can exhibit morphological, physiological, and biochemical variations implemented by the occurrence of extra chromosomes of maize, as well as the interaction of maize and oat chromatin. The initial goal of the study was to identify OMA lines among plants produced by wide crossing with maize. The main goal was to investigate differences in OMA lines according to the Excised Leaf Water Loss (ELWL) test and to identify specific biochemical changes and agronomic traits under optimal water conditions and soil drought. Additionally, detection of any potential alterations that are stable in F2 and F3 generations. The aforementioned outcomes were the basis for the selection of OMA lines that tolerate growth in an environment with limited water availability. The molecular analysis indicated 12.5% OMA lines among all tested descendants of wide oat-maize crossing. The OMA lines significantly differ according to ELWL test results, which implies some anatomical and physiological adaptation to water loss from tissues. On the first day of drought, plants possessed 34% more soluble sugars compared to control plants. On the fourteen day of drought, the amount of soluble sugars was reduced by 41.2%. A significant increase of phenolic compounds was observed in the fourteen day of drought, an average of 6%, even up to 57% in line 9. Soil drought substantially reduced stem biomass, grains number, and mass per plant. Lower water loss revealed by results of the ELWL test correlated with the high yield of OMA lines. Phenolic compound content might be used as a biochemical indicator of plant drought tolerance since there was a significant correlation with the high yield of plants subjected to soil drought.

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“…A. sativa L. is also characterized by a high forecrop value, constituting a positive "anti-fatigue" element in the crop rotation. However, compared to other cereal crops, oat has higher water requirements and is more susceptible to drought (Pisulewska et al, 2011). Osmotic stress occurs due to the lowering of soil water potential, which reduced the uptake of water.…”

Section: Introductionmentioning

confidence: 99%

The involvement of metallothioneins and stress markers in response to osmotic stress in Avena sativa L.

Konieczna

Mierek‐Adamska

Warchoł

et al. 2023

J Agronomy Crop Science

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Osmotic stress frequently caused by drought is the most threatening environmental stress that remarkably reduces crop yield. Oat (Avena sativa L.) is sensitive to water deficiency during growth. Plant metallothioneins (pMTs) show tremendous promise in enhancing general stress tolerance in plants. This study aimed to verify whether pMTs and elements of the antioxidant defence system protect oat against osmotic stress.Coding and genomic regions of A. sativa L. MTs belonging to three different types were cloned. To evaluate the role of MTs in osmotic stress, the expression of genes encoding AsMT1-3 was checked by qRT-PCR in the roots and shoots of oat plants growing in a hydroponic culture in the presence of polyethylene glycol (PEG 6000) and mannitol. The expression of AsMT1-3 changed in response to osmotic stress; however, the changes depended on the type of MT and the treatment. The amount of AsMT3 transcript was about five-fold and nine-fold higher in shoots and roots, respectively, in the presence of mannitol. To further analyse the response of oat to osmotic stress, the level of phenolic compounds, soluble sugars, abscisic acid, and the activity of antioxidant enzymes were tested using spectrophotometric and chromatographic methods. During osmotic stress, the content of phenols, soluble sugars, abscisic acid, and the activity of catalase and peroxidase in shoots increased. In roots treated with PEG 6000, the amount of phenolic compounds was higher than that in roots treated with mannitol. The activity of superoxide dismutase was about 5-fold higher in roots than in shoots. MTs are involved in plant response to osmotic stress. In the future, insight provided in this study will lead to application in agriculture either by using MTs as molecular markers for stress-resistant crop cultivars or by a generation of genetically modified crops overexpressing MTs.

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Effect of Habitat Conditions on Content and Quality of Lipids in Selected Oat Forms

Cited by 5 publications

References 6 publications

Oat as a Potential Source of Energy

Oat as a Potential Source of Energy

Effect of Soil Drought Stress on Selected Biochemical Parameters and Yield of Oat × Maize Addition (OMA) Lines

The involvement of metallothioneins and stress markers in response to osmotic stress in Avena sativa L.

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