Abstract
This study was performed to evaluating the effect of osmotic stress at the water potential levels induced by polyethylene glycol 6000 and NaCl solutions at germination stage of bread wheat genotypes (Cascogne and saisonez) at laboratory, in Iran in 2011 as factorial experiment under complete randomized design with four replications. Daily and final germination as well as germination and seedling emergence rate, and seedling fresh and dry weight were measured in the study under controlled conditions. Seedling growth was reduced by both stresses. But NaCl usually caused less damage than PEG to durum wheat seedlings, suggesting that NaCl and PEG acted through different mechanisms. Results of analysis of variance showed significant difference of all factors on all traits mostly at 0.01 percentage level. Results showed those germination rate was delayed by both solutions in both varieties, with differences between genotypes among growth stages, given that Saisonez genotype showed a higher germination rate than Cascogne genotype in NaCl. NaCl had a lesser effect on genotypes in terms of germination rate and the final germination than did PEG. This conclusively proves that the adverse effect of PEG on germination and early seedling growth was due to the osmotic effect rather than the specific ion. This difference in cultivar’s behavior according to the growth conditions is discussed. It was concluded that inhibition in germination at equivalent water potential levels of NaCl and PEG was mainly due to an osmotic effect rather than did salt toxicity. Finally Saisonez genotype showed that resistance to both NaCl and PEG stress than Cascogne genotype. So Sisonez is tolerant that Cascogne genotype at germination stage.
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Claims 8
Claim · model-written summary
Both stresses reduced seedling growth.
- Taxon
- bread wheat
Triticum aestivumt0 - Treatment
- both stressese0
- Outcome
- Seedling growthe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e0“Seedling growth was reduced by both stresses.”
Claim · model-written summary
NaCl caused less seedling damage than PEG.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e0“NaCl usually caused less damage than PEG to durum wheat seedlings, suggesting that NaCl and PEG acted through different mechanisms.”
Claim · model-written summary
Analysis of variance found significant factor differences across traits.
- Taxon
- bread wheatTriticum aestivumt0
- Outcome
- difference of all factors on all traitse0
- Value
- 0.01 percentage levele0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e0“Results of analysis of variance showed significant difference of all factors on all traits mostly at 0.01 percentage level.”
Claim · model-written summary
Both solutions delayed germination in both varieties.
- Taxon
- bread wheatTriticum aestivumt0
- Treatment
- both solutionse0
- Outcome
- germination ratee0
- Direction
- delayede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e0“Results showed those germination rate was delayed by both solutions in both varieties, with differences between genotypes among growth stages, given that Saisonez genotype showed a higher germination rate than Cascogne genotype in NaCl.”
Claim · model-written summary
Saisonez had higher germination than Cascogne under NaCl.
- Taxon
- bread wheatTriticum aestivumt0
- Material
- Saisonez genotypee0
- Treatment
- NaCle0
- Outcome
- germination ratee0
- Direction
- highere0
- Comparator
- Cascogne genotypee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e0“Results showed those germination rate was delayed by both solutions in both varieties, with differences between genotypes among growth stages, given that Saisonez genotype showed a higher germination rate than Cascogne genotype in NaCl.”
Claim · model-written summary
NaCl had a lesser effect than PEG on germination rate and final germination.
- Taxon
- bread wheatTriticum aestivumt0
- Treatment
- NaCle0
- Outcome
- germination rate and the final germinatione0
- Direction
- lessere0
- Comparator
- PEGe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e0“NaCl had a lesser effect on genotypes in terms of germination rate and the final germination than did PEG.”
Claim · model-written summary
The authors attributed germination inhibition chiefly to osmotic effects.
- Taxon
- bread wheatTriticum aestivumt0
- Treatment
- NaCl and PEGe0
- Outcome
- inhibition in germinatione0
- Qualifier
- mainly due to an osmotic effect rather than did salt toxicitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e0“It was concluded that inhibition in germination at equivalent water potential levels of NaCl and PEG was mainly due to an osmotic effect rather than did salt toxicity.”
Claim · model-written summary
Saisonez was more resistant to NaCl and PEG than Cascogne.
- Taxon
- bread wheatTriticum aestivumt0
- Material
- Saisonez genotypee0
- Treatment
- NaCl and PEG stresse0
- Outcome
- resistancee0
- Comparator
- Cascogne genotypee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e0“Finally Saisonez genotype showed that resistance to both NaCl and PEG stress than Cascogne genotype.”
The same questions in other papers
sodium chloride · growth · Triticum aestivum (wheat)Results differ
23 papers in the same direction as this paper · 113 in the opposite direction
- positive
- negative
- negative
133 papers more in this group
See all 137 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.