Abstract
Silicon (Si) and selenium (Se) are recognized as beneficial elements that may significantly improve plant’s tolerance to drought stress. However, their action and efficiency on germination, biometric and physiological attributes are rarely compared on durum wheat under water-deficit conditions. This study highlights the effect of Si (15 mg L−1) and Se (1 and 2 mg L−1) seed priming on germination kinetic of four durum wheat varieties (‘Karim’, ‘Maali’, ‘INRAT100’, and ‘Dhahbi’) under osmotic stress (150 g L−1 PEG6000). In addition, a pot experiment was undertaken in the year 2019/2020 to examine the fertigation benefits of these elements on growth and physiological durum wheat performance, using the same concentrations under two water regimes (70 and 30% field capacity). Except for phenols, flavonoids and carotenoids contents, our results indicated that osmotic/drought stress induced considerable reductions in germination rate, root, shoot and leaf physiological attributes. However, these drastic impacts were altered through seed priming and fertigation of Si and Se (2 mg L−1). Se seed priming was more effective than that of Si, and inversely for the fertigation. These two nutrients Si and Se stimulated the elongation of roots (23.82%, 9.48%) better than that of shoots (20.55%, 10.44%), but improved the shoot fresh (27.79%, 10.37%) and dry weight (32%, 18.13%) better than that of roots. Specific interactions between studied traits were noted according to the water regime. In addition, genotype-specific effects of Si or Se were observed. The variety ‘Karim’, the lowest performing genotype, was the most receptive to stimulators. The positive changes resulting from Si and Se applications highlights the potential of these elements in boosting durum wheat plants to successfully acclimate to water-deficit conditions.
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Claims 16
Claim · model-written summary
Osmotic or drought stress reduced durum wheat germination rate.
- Taxon
- durum wheat
Triticum turgidum subsp. durumt0 - Treatment
- osmotic/drought stresse0
- Outcome
- germination ratee0
- Direction
- reductionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“osmotic/drought stress induced considerable reductions in germination rate, root, shoot and leaf physiological attributes”
t0“durum wheat (Triticum durum Desf.)”
Claim · model-written summary
Osmotic or drought stress reduced root, shoot and leaf physiological attributes.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Treatment
- osmotic/drought stresse0
- Outcome
- root, shoot and leaf physiological attributese0
- Direction
- reductionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“osmotic/drought stress induced considerable reductions in germination rate, root, shoot and leaf physiological attributes”
t0“durum wheat (Triticum durum Desf.)”
Claim · model-written summary
Si and Se priming or fertigation altered adverse stress impacts on durum wheat.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Treatment
- seed priming and fertigation of Si and Se (2 mg L−1)e0
- Outcome
- drastic impactse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“these drastic impacts were altered through seed priming and fertigation of Si and Se (2 mg L−1)”
t0“durum wheat (Triticum durum Desf.)”
Claim · model-written summary
Se seed priming was more effective than Si seed priming.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Treatment
- Se seed priminge0
- Outcome
- more effectivee0
- Direction
- more effectivee0
- Comparator
- Sie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Se seed priming was more effective than that of Si”
t0“durum wheat (Triticum durum Desf.)”
Claim · model-written summary
Si fertigation was more effective than Se fertigation.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Treatment
- fertigatione0
- Outcome
- inversely for the fertigatione0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“and inversely for the fertigation”
t0“durum wheat (Triticum durum Desf.)”
Claim · model-written summary
Si stimulated root elongation by 23.82%.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Treatment
- Sie0
- Outcome
- elongation of rootse0
- Direction
- stimulatede0
- Value
- 23.82%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Si and Se stimulated the elongation of roots (23.82%, 9.48%)”
t0“durum wheat (Triticum durum Desf.)”
Claim · model-written summary
Se stimulated root elongation by 9.48%.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Treatment
- See0
- Outcome
- elongation of rootse0
- Direction
- stimulatede0
- Value
- 9.48%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Si and Se stimulated the elongation of roots (23.82%, 9.48%)”
t0“durum wheat (Triticum durum Desf.)”
Claim · model-written summary
Si stimulated shoot elongation by 20.55%.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Treatment
- Sie1
- Outcome
- shootse0
- Direction
- bettere0
- Value
- 20.55%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“better than that of shoots (20.55%, 10.44%)”
t0“durum wheat (Triticum durum Desf.)”
e1“Si and Se stimulated the elongation of roots (23.82%, 9.48%)”
Claim · model-written summary
Se stimulated shoot elongation by 10.44%.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Treatment
- See1
- Outcome
- shootse0
- Direction
- bettere0
- Value
- 10.44%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“better than that of shoots (20.55%, 10.44%)”
t0“durum wheat (Triticum durum Desf.)”
e1“Si and Se stimulated the elongation of roots (23.82%, 9.48%)”
Claim · model-written summary
Si increased shoot fresh weight by 27.79%.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Treatment
- Sie1
- Outcome
- shoot freshe0
- Direction
- improvede0
- Value
- 27.79%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“improved the shoot fresh (27.79%, 10.37%) and dry weight (32%, 18.13%)”
t0“durum wheat (Triticum durum Desf.)”
e1“These two nutrients Si and Se stimulated”
Claim · model-written summary
Se increased shoot fresh weight by 10.37%.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Treatment
- See1
- Outcome
- shoot freshe0
- Direction
- improvede0
- Value
- 10.37%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“improved the shoot fresh (27.79%, 10.37%) and dry weight (32%, 18.13%)”
t0“durum wheat (Triticum durum Desf.)”
e1“These two nutrients Si and Se stimulated”
Claim · model-written summary
Si increased shoot dry weight by 32%.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Treatment
- Sie1
- Outcome
- dry weighte0
- Direction
- improvede0
- Value
- 32%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“improved the shoot fresh (27.79%, 10.37%) and dry weight (32%, 18.13%)”
t0“durum wheat (Triticum durum Desf.)”
e1“These two nutrients Si and Se stimulated”
Claim · model-written summary
Se increased shoot dry weight by 18.13%.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Treatment
- See1
- Outcome
- dry weighte0
- Direction
- improvede0
- Value
- 18.13%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“improved the shoot fresh (27.79%, 10.37%) and dry weight (32%, 18.13%)”
t0“durum wheat (Triticum durum Desf.)”
e1“These two nutrients Si and Se stimulated”
Claim · model-written summary
Relationships among studied wheat traits differed with water regime.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Treatment
- water regimee0
- Outcome
- Specific interactions between studied traitse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Specific interactions between studied traits were noted according to the water regime.”
t0“durum wheat (Triticum durum Desf.)”
Claim · model-written summary
Si and Se effects differed by durum wheat genotype.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Outcome
- genotype-specific effects of Si or See0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“genotype-specific effects of Si or Se were observed”
t0“durum wheat (Triticum durum Desf.)”
Claim · model-written summary
The lowest performing genotype, Karim, was most receptive to Si and Se stimulators.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Material
- Karime0
- Outcome
- most receptive to stimulatorse0
- Direction
- most receptivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The variety ‘Karim’, the lowest performing genotype, was the most receptive to stimulators.”
t0“durum wheat (Triticum durum Desf.)”
The same questions in other papers
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26 papers more in this group
See all 30 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.