Abstract
Abstract The effects of salinity (0, 75, 150 mM) and cadmium (Cd) (0, 2, 4 μM) stresses on biomass (dry matter), photosynthesis, and fluorescence parameters were studied in hydroponically-grown wheat genotypes ('Bakhtawar-92', 'Pir Sabak-85' and 'Khyber-87'). Cadmium and sodium chloride (NaCl) alone significantly reduced dry matter weight of both shoots and roots, and the combined stress of NaCl + Cd resulted in more reduction of dry matter weight in comparison with that caused by Cd or NaCl stress alone. The addition of Cd and NaCl in the growth medium caused the significant reduction in net photosynthetic rate (Pn), fluorescence efficiency (Fv/Fm) and stomata conductance (Gs), and the significant increase in intercellular carbon dioxide (CO2) concentration. The results also showed that the inhibition of photosynthetic and fluorescence efficiency under salinity or cadmium stress differed among the three wheat genotypes, with 'Bakhtawar-92' having greater capacity of acclimation to both stresses than the other two genotypes. Keywords: wheat (Triticum aestivum L.)cadmiumsalinityphotosynthesisfluorescence ACKNOWLEDGMENT We are highly grateful to Higher Education Commission (HEC) of Pakistan for financial support of this research project.
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Claims 5
Claim · model-written summary
Cadmium and sodium chloride each significantly reduced wheat shoot and root dry matter weight.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- Cadmium and sodium chloride (NaCl)e0
- Outcome
- dry matter weight of both shoots and rootse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cadmium and sodium chloride (NaCl) alone significantly reduced dry matter weight of both shoots and roots”
t0“WHEAT”
Claim · model-written summary
Combined NaCl and Cd reduced wheat dry matter weight more than either stress alone.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- combined stress of NaCl + Cde0
- Outcome
- dry matter weighte0
- Direction
- more reductione0
- Comparator
- Cd or NaCl stress alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the combined stress of NaCl + Cd resulted in more reduction of dry matter weight in comparison with that caused by Cd or NaCl stress alone”
t0“WHEAT”
Claim · model-written summary
Cd and NaCl significantly reduced wheat net photosynthetic rate, fluorescence efficiency and stomata conductance.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- addition of Cd and NaCle0
- Outcome
- net photosynthetic rate (Pn), fluorescence efficiency (Fv/Fm) and stomata conductance (Gs)e0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The addition of Cd and NaCl in the growth medium caused the significant reduction in net photosynthetic rate (Pn), fluorescence efficiency (Fv/Fm) and stomata conductance (Gs)”
t0“WHEAT”
Claim · model-written summary
Cd and NaCl significantly increased wheat intercellular carbon dioxide concentration.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- addition of Cd and NaCle0
- Outcome
- intercellular carbon dioxide (CO2) concentratione0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The addition of Cd and NaCl in the growth medium caused the significant reduction in net photosynthetic rate (Pn), fluorescence efficiency (Fv/Fm) and stomata conductance (Gs), and the significant increase in intercellular carbon dioxide (CO2) concentration”
t0“WHEAT”
Claim · model-written summary
'Bakhtawar-92' had greater acclimation capacity to salinity and cadmium than the other two wheat genotypes.
- Taxon
- wheatTriticum aestivumt0
- Material
- 'Bakhtawar-92'e0
- Treatment
- both stressese0
- Outcome
- capacity of acclimatione0
- Direction
- greatere0
- Comparator
- other two genotypese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“'Bakhtawar-92' having greater capacity of acclimation to both stresses than the other two genotypes”
t0“WHEAT”
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