Abstract
Salt tolerances of 3 cultivars, Menemen puccinellia (Puccinellia ciliata Bor), Tyrrell and Dundas [tall wheatgrass, Thinopyrum ponticum (Podp.) Z. W. Liu and R. R. C. Wang], were compared with respect to their seed germination, adaptive responses to salt and waterlogging, seedling emergence, plant growth, shoot osmolality and mineral contents in a series of salt-stress experiments. An inverse normal distribution provided good fits for the time to seed germination. Under NaCl stress, 50% of the control (distilled water) seed germination rates of Menemen, Tyrrell and Dundas were achieved in 178.8, 300.9 and 296.8 mmol/L NaCl, respectively. Fifty percent of the control seedling emergence rates of these 3 cultivars were in 92.7, 107.2 and 113.5 mmol/L NaCl, respectively. The seed germination rates of these 3 cultivars under both salt and waterlogging stress were far lower than those germinated only under salt stress at the same salt level. Seed pretreatment by soaking seed in NaCl solutions greatly increased the seed germination rate under salt stress for Menemen and under both salt stress and waterlogging for Dundas. Tyrrell and Dundas were very similar in their tolerance to salt stress, and were significantly (P<0.05) more salt tolerant than Menemen in terms of seed germination and seedling emergence rate. Both shoot height and dry matter of these 3 cultivars were not statistically different among all salt stress levels during the seedling elongation period, indicating that the established plants of these 3 cultivars were very salt tolerant. The salt tolerance mechanisms of these 3 cultivars are possibly related to their abilities to maintain high osmolality in shoots by regulating high sodium and potassium contents, and reducing calcium deficiency under salt stress.
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Claims 14
Claim · model-written summary
An inverse normal distribution fit time to seed germination.
- Taxon
- puccinellia (Puccinellia ciliata) and two cultivars of tall wheatgrass (Thinopyrum ponticum)
Thinopyrum obtusiflorumPuccinellia ciliatat0 - Outcome
- good fits for the time to seed germinatione0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An inverse normal distribution provided good fits for the time to seed germination”
t0“puccinellia (Puccinellia ciliata) and two cultivars of tall wheatgrass (Thinopyrum ponticum)”
Claim · model-written summary
Menemen germination reached 50% of control at 178.8 mmol/L NaCl.
Verbatim
e0“50% of the control (distilled water) seed germination rates of Menemen, Tyrrell and Dundas were achieved in 178.8, 300.9 and 296.8 mmol/L NaCl, respectively”
t0“puccinellia (Puccinellia ciliata)”
Claim · model-written summary
Tyrrell germination reached 50% of control at 300.9 mmol/L NaCl.
- Taxon
- tall wheatgrass
Thinopyrum elongatumt0 - Material
- Tyrrelle0
- Outcome
- seed germination ratese0
- Value
- 300.9e0
- Comparator
- control (distilled water)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“50% of the control (distilled water) seed germination rates of Menemen, Tyrrell and Dundas were achieved in 178.8, 300.9 and 296.8 mmol/L NaCl, respectively”
t0“tall wheatgrass”
Claim · model-written summary
Dundas germination reached 50% of control at 296.8 mmol/L NaCl.
- Taxon
- tall wheatgrassThinopyrum elongatumt0
- Material
- Dundase0
- Outcome
- seed germination ratese0
- Value
- 296.8 mmol/L NaCle0
- Comparator
- control (distilled water)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“50% of the control (distilled water) seed germination rates of Menemen, Tyrrell and Dundas were achieved in 178.8, 300.9 and 296.8 mmol/L NaCl, respectively”
t0“tall wheatgrass”
Claim · model-written summary
Menemen seedling emergence reached 50% of control at 92.7 mmol/L NaCl.
Verbatim
e0“Fifty percent of the control seedling emergence rates of these 3 cultivars were in 92.7, 107.2 and 113.5 mmol/L NaCl, respectively”
t0“puccinellia (Puccinellia ciliata)”
e1“Menemen puccinellia (Puccinellia ciliata Bor)”
Claim · model-written summary
Tyrrell seedling emergence reached 50% of control at 107.2 mmol/L NaCl.
- Taxon
- tall wheatgrassThinopyrum elongatumt0
- Material
- Tyrrelle1
- Outcome
- seedling emergence ratese0
- Value
- 107.2e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fifty percent of the control seedling emergence rates of these 3 cultivars were in 92.7, 107.2 and 113.5 mmol/L NaCl, respectively”
t0“tall wheatgrass (Thinopyrum ponticum)”
e1“Tyrrell and Dundas [tall wheatgrass, Thinopyrum ponticum (Podp.)”
Claim · model-written summary
Dundas seedling emergence reached 50% of control at 113.5 mmol/L NaCl.
- Taxon
- tall wheatgrassThinopyrum elongatumt0
- Material
- Dundase1
- Outcome
- seedling emergence ratese0
- Value
- 113.5 mmol/L NaCle0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fifty percent of the control seedling emergence rates of these 3 cultivars were in 92.7, 107.2 and 113.5 mmol/L NaCl, respectively”
t0“tall wheatgrass (Thinopyrum ponticum)”
e1“Tyrrell and Dundas [tall wheatgrass, Thinopyrum ponticum (Podp.)”
Claim · model-written summary
Combined salt and waterlogging lowered germination across all three cultivars relative to salt alone.
- Taxon
- puccinellia (Puccinellia ciliata) and two cultivars of tall wheatgrass (Thinopyrum ponticum)Thinopyrum obtusiflorumPuccinellia ciliatat0
- Treatment
- both salt and waterlogging stresse0
- Outcome
- seed germination ratese0
- Direction
- far lowere0
- Comparator
- only under salt stress at the same salt levele0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The seed germination rates of these 3 cultivars under both salt and waterlogging stress were far lower than those germinated only under salt stress at the same salt level”
t0“puccinellia (Puccinellia ciliata) and two cultivars of tall wheatgrass (Thinopyrum ponticum)”
Claim · model-written summary
NaCl seed soaking increased Menemen germination under salt stress.
- Taxon
- Puccinellia ciliataPuccinellia ciliatat0
- Material
- Menemene0
- Treatment
- soaking seed in NaCl solutionse0
- Outcome
- seed germination ratee0
- Direction
- greatly increasede0
Not reportedComparator
Verbatim
e0“Seed pretreatment by soaking seed in NaCl solutions greatly increased the seed germination rate under salt stress for Menemen”
t0“puccinellia (Puccinellia ciliata)”
Claim · model-written summary
NaCl soaking increased Dundas germination under combined salt and waterlogging.
- Taxon
- tall wheatgrassThinopyrum elongatumt0
- Material
- Dundase0
- Treatment
- soaking seed in NaCl solutionse0
- Outcome
- seed germination ratee0
- Direction
- greatly increasede0
- Qualifier
- both salt stress and waterlogginge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed pretreatment by soaking seed in NaCl solutions greatly increased the seed germination rate under salt stress for Menemen and under both salt stress and waterlogging for Dundas”
t0“tall wheatgrass”
Claim · model-written summary
Tyrrell and Dundas were similarly salt tolerant and significantly more tolerant than Menemen for germination and emergence.
- Taxon
- tall wheatgrassThinopyrum elongatumt0
- Material
- Tyrrell and Dundase0
- Outcome
- seed germination and seedling emergence ratee0
- Direction
- more salt tolerante0
- Comparator
- Menemene0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tyrrell and Dundas were very similar in their tolerance to salt stress, and were significantly (P<0.05) more salt tolerant than Menemen in terms of seed germination and seedling emergence rate”
t0“tall wheatgrass”
Claim · model-written summary
Shoot height did not differ significantly across salt stress levels during seedling elongation.
- Taxon
- puccinellia (Puccinellia ciliata) and two cultivars of tall wheatgrass (Thinopyrum ponticum)Thinopyrum obtusiflorumPuccinellia ciliatat0
- Outcome
- shoot heighte0
- Direction
- not statistically differente0
- Comparator
- all salt stress levelse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both shoot height and dry matter of these 3 cultivars were not statistically different among all salt stress levels during the seedling elongation period”
t0“puccinellia (Puccinellia ciliata) and two cultivars of tall wheatgrass (Thinopyrum ponticum)”
Claim · model-written summary
Dry matter did not differ significantly across salt stress levels during seedling elongation.
- Taxon
- puccinellia (Puccinellia ciliata) and two cultivars of tall wheatgrass (Thinopyrum ponticum)Thinopyrum obtusiflorumPuccinellia ciliatat0
- Outcome
- dry mattere0
- Direction
- not statistically differente0
- Comparator
- all salt stress levelse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both shoot height and dry matter of these 3 cultivars were not statistically different among all salt stress levels during the seedling elongation period”
t0“puccinellia (Puccinellia ciliata) and two cultivars of tall wheatgrass (Thinopyrum ponticum)”
Claim · model-written summary
Authors propose osmotic maintenance by sodium and potassium regulation and reduced calcium deficiency as salt tolerance mechanisms.
- Taxon
- puccinellia (Puccinellia ciliata) and two cultivars of tall wheatgrass (Thinopyrum ponticum)Thinopyrum obtusiflorumPuccinellia ciliatat0
- Outcome
- salt tolerance mechanismse0
- Qualifier
- maintain high osmolality in shoots by regulating high sodium and potassium contents, and reducing calcium deficiencye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The salt tolerance mechanisms of these 3 cultivars are possibly related to their abilities to maintain high osmolality in shoots by regulating high sodium and potassium contents, and reducing calcium deficiency under salt stress”
t0“puccinellia (Puccinellia ciliata) and two cultivars of tall wheatgrass (Thinopyrum ponticum)”
The same questions in other papers
sodium chloride · growth · Thinopyrum elongatum (tall wheatgrass)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- negative
- positive
salinity · growth · Puccinellia ciliataPositive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- negative
- positive
flooding · growth · Thinopyrum obtusiflorumResults agree
1 paper in the same direction as this paper
- negative
application · growth · Thinopyrum elongatum (tall wheatgrass)Results agree
1 paper in the same direction as this paper
- positive
salinity · growth · Thinopyrum obtusiflorumResults agree
2 papers in the same direction as this paper
- negative
- negative
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.