Abstract
Abstract: The effects of presowing seed treatment with different concentrations of cytokinins (kinetin and benzylaminopurine; 100, 150, and 200 mg/L) on growth, photosynthetic capacity, and ion homeostasis were investigated in two spring wheat (Triticum aestivum L.) cultivars, namely MH-97 (salt sensitive) and Inqlab-91 (salt tolerant). Primed and non-primed seeds were sown in a field in which NaCl salinity of 15 dS/m was developed. Of the different concentrations of priming agents tested, the effect of a moderate concentration of kinetin (150 mg/L) was very pronounced, particularly in improving growth and grain yield, in both cultivars. In addition, priming with kinetin alleviated the adverse effect of salt stress on gaseous exchange characteristics (net CO2 assimilation rate and water use efficiency) in both cultivars. Seed priming with a moderate concentration of kinetin also altered the pattern of accumulation of Na+ and Cl− in the shoots, irrespective of the wheat cultivar, under conditions of salt stress. However, all other priming agents at the different concentrations tested did not show any consistent effect on ion levels, except hydropriming, which increased K+ levels in the shoots of both cultivars under salt stress. In conclusion, a moderate concentration of kinetin showed a consistent effect in altering the growth and grain yield of both wheat cultivars, which was related to the beneficial effects of kinetin priming on water use efficiency and photosynthetic rate under conditions of salt stress. (Managing editor: Ping HE)
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Claims 7
Claim · model-written summary
Seed priming with 150 mg/L kinetin improved growth in both cultivars under salinity.
- Taxon
- Wheat
Triticum aestivumt0 - Treatment
- kinetin (150 mg/L)e0
- Outcome
- growthe0
- Direction
- improvinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effect of a moderate concentration of kinetin (150 mg/L) was very pronounced, particularly in improving growth and grain yield, in both cultivars”
t0“Wheat”
Claim · model-written summary
Seed priming with 150 mg/L kinetin improved grain yield in both cultivars under salinity.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- kinetin (150 mg/L)e0
- Outcome
- grain yielde0
- Direction
- improvinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effect of a moderate concentration of kinetin (150 mg/L) was very pronounced, particularly in improving growth and grain yield, in both cultivars”
t0“Wheat”
Claim · model-written summary
Kinetin priming alleviated salt stress effects on net CO2 assimilation and water use efficiency in both cultivars.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- priming with kinetine0
- Outcome
- net CO2 assimilation rate and water use efficiencye0
- Direction
- alleviatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“priming with kinetin alleviated the adverse effect of salt stress on gaseous exchange characteristics (net CO2 assimilation rate and water use efficiency) in both cultivars”
t0“Wheat”
Claim · model-written summary
Kinetin seed priming altered shoot Na+ and Cl− accumulation under salt stress.
- Taxon
- wheatTriticum aestivume0
- Treatment
- Seed priming with a moderate concentration of kinetine0
- Outcome
- accumulation of Na+ and Cl− in the shootse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed priming with a moderate concentration of kinetin also altered the pattern of accumulation of Na+ and Cl− in the shoots, irrespective of the wheat cultivar, under conditions of salt stress”
Claim · model-written summary
Other priming agents had no consistent effect on shoot ion levels.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- all other priming agents at the different concentrations testede0
- Outcome
- ion levelse0
- Direction
- did not show any consistent effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“all other priming agents at the different concentrations tested did not show any consistent effect on ion levels, except hydropriming”
t0“Wheat”
Claim · model-written summary
Hydropriming increased shoot K+ under salt stress in both cultivars.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- hydropriminge0
- Outcome
- K+ levels in the shootse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hydropriming, which increased K+ levels in the shoots of both cultivars under salt stress”
t0“Wheat”
Claim · model-written summary
The authors relate kinetin-induced growth and yield changes to water use efficiency and photosynthetic rate.
- Taxon
- wheatTriticum aestivume0
- Treatment
- kinetin priminge0
- Outcome
- growth and grain yielde0
- Qualifier
- related to the beneficial effects of kinetin priming on water use efficiency and photosynthetic ratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“kinetin showed a consistent effect in altering the growth and grain yield of both wheat cultivars, which was related to the beneficial effects of kinetin priming on water use efficiency and photosynthetic rate under conditions of salt stress”
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