Abstract
Drought, temperature and salt stress are the most prominent among different types of abiotic stress in soybean production. This PhD dissertation aimed to investigate the physiological mechanisms of soybean response to the above mentioned stresses. The research was performed with 6 cultivars in the germination - emergence stage and two cultivars in the flowering stage. In the first experiment, soybean seed was germinated in paper towels soaked in water or the solution with given osmotic pressure. Two levels of drought (5% and 10% PEG solutions), salt (50 and 100 mM NaCl solutions) and temperature stress (10°C and 30°C), as well as a control treatment (20°C, water) were applied through a 7 day germination period. Seed germinability (%) and morphological traits were analysed, as well as enzymatic and non-enzymatic parameters in hypocotyls. The most effective were higher level of drought stress and low temperature. High temperature stimulated seedling development and mild drought stress had a priming effect and increased germination rate. In the second experiment, two cultivars were grown in pots filled with soil and kept in the open until flowering, and afterwards exposed to different temperature degrees (30°C, 10°C and 20°C as control) during 3 days in a climate chamber. The photosynthesis efficiency parameters and, like in first experiment, physiological indicators of plant stress response were determined in the leaf tissue. Highly significant treatment influence on the analysed parameters in the both growth stages, confirms that the applied treatments invoked the oxidative stress and defence reactions in soybean.
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Claims 6
Claim · model-written summary
In soybean germination, the higher level of drought stress was among the most effective treatments.
- Taxon
- soybean
Glycine maxt0 - Treatment
- higher level of drought stresse0
- Outcome
- most effectivee0
- Direction
- most effectivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The most effective were higher level of drought stress and low temperature”
t0“soybean”
Claim · model-written summary
In soybean germination, low temperature was among the most effective treatments.
- Taxon
- soybeanGlycine maxt0
- Treatment
- low temperaturee0
- Outcome
- most effectivee0
- Direction
- most effectivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The most effective were higher level of drought stress and low temperature”
t0“soybean”
Claim · model-written summary
High temperature stimulated soybean seedling development.
- Taxon
- soybeanGlycine maxt0
- Treatment
- High temperaturee0
- Outcome
- seedling developmente0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High temperature stimulated seedling development”
t0“soybean”
Claim · model-written summary
Mild drought stress had a priming effect and increased the soybean germination rate.
- Taxon
- soybeanGlycine maxt0
- Treatment
- mild drought stresse0
- Outcome
- germination ratee0
- Direction
- increasede0
- Qualifier
- priming effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mild drought stress had a priming effect and increased germination rate”
t0“soybean”
Claim · model-written summary
Treatments had a highly significant influence on the analysed parameters in both growth stages of soybean.
- Taxon
- soybeanGlycine maxt0
- Treatment
- treatmente0
- Outcome
- analysed parameterse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Highly significant treatment influence on the analysed parameters in the both growth stages”
t0“soybean”
Claim · model-written summary
The authors conclude the applied treatments invoked oxidative stress and defence reactions in soybean.
- Taxon
- soybeanGlycine maxe0
- Treatment
- applied treatmentse0
- Outcome
- oxidative stress and defence reactionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“confirms that the applied treatments invoked the oxidative stress and defence reactions in soybean”
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