Abstract
This paper studied the seed germination and seedling growth of four perennial drought-tolerant rhizome grasses Leymus chinensis,Agropygron elongatum,Festuca arundinacea and Elymus junceus under effects of 0,50,100,150,200,300,400,and 500 mmol NaCl·L-1.With increasing NaCl concentration,the seed germination rate of test grasses had a decreasing trend.L.chinensis had the lowest salt tolerance.Its seed germination rate was only 1.5% at 300 mmol NaCl·L-1,and no seeds germinated at 300 mmol NaCl·L-1.A.elongatum,F.arundinacea and E.junceus had higher salt tolerance.Their seed germination rate reached 17.3%,20%,and 18.1%,respectively,at 500 mmol NaCl·L-1.The root length and shoot height of test grasses were significantly negatively correlated with NaCl concentration.With the increase of NaCl concentration,E.junceus had the greatest decrement of its root length while A.elongatum had the smallest one,and L.chinensis had the greatest decrement of its shoot length while A.elongatum had the smallest one.The root/shoot ratio of L.chinensis increased while that of the other three grasses decreased with increasing NaCl concentration,illustrating that for L.chinensis,the inhibitory effect of NaCl was stronger on root growth than on shoot growth,while for the other three grasses,it was in adverse.In sum,L.chinensis had the lowest salt tolerance during its germination and seedling stages,while the other three grasses had higher salt tolerance in their seed germination and seedling growth.
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Claims 16
Claim · model-written summary
Seed germination rate of the test grasses decreased with increasing NaCl concentration.
- Taxon
- test grassese0
- Treatment
- increasing NaCl concentratione0
- Outcome
- seed germination ratee0
- Direction
- decreasinge0
Not reportedComparator
Verbatim
e0“With increasing NaCl concentration,the seed germination rate of test grasses had a decreasing trend”
Claim · model-written summary
L. chinensis had the lowest salt tolerance among the four grasses.
- Taxon
- L.chinensisLeymus chinensise0
- Outcome
- salt tolerancee0
- Direction
- loweste0
Verbatim
e0“L.chinensis had the lowest salt tolerance.Its”
Claim · model-written summary
L. chinensis seed germination was only 1.5% at 300 mmol NaCl per litre.
Not reportedTaxonComparatorDirection
Verbatim
e0“Its seed germination rate was only 1.5% at 300 mmol NaCl·L-1”
Claim · model-written summary
No L. chinensis seeds germinated at 300 mmol NaCl per litre.
Not reportedTaxonComparatorDirection
Verbatim
e0“no seeds germinated at 300 mmol NaCl·L-1”
Claim · model-written summary
A.elongatum seed germination reached 17.3% at 500 mmol NaCl per litre, with higher salt tolerance than L. chinensis.
- Taxon
- A.elongatume0
- Treatment
- 500 mmol NaCl·L-1e1
- Outcome
- seed germination ratee1
- Value
- 17.3%e1
- Qualifier
- higher salt tolerancee0
Not reportedComparatorDirection
Verbatim
e0“A.elongatum,F.arundinacea and E.junceus had higher salt tolerance”
e1“Their seed germination rate reached 17.3%,20%,and 18.1%,respectively,at 500 mmol NaCl·L-1”
Claim · model-written summary
F.arundinacea seed germination reached 20% at 500 mmol NaCl per litre, with higher salt tolerance than L. chinensis.
- Taxon
- F.arundinacea
Lolium arundinaceume0 - Treatment
- 500 mmol NaCl·L-1e1
- Outcome
- seed germination ratee1
- Value
- 20%e1
- Qualifier
- higher salt tolerancee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A.elongatum,F.arundinacea and E.junceus had higher salt tolerance”
e1“Their seed germination rate reached 17.3%,20%,and 18.1%,respectively,at 500 mmol NaCl·L-1”
Claim · model-written summary
E.junceus seed germination reached 18.1% at 500 mmol NaCl per litre, with higher salt tolerance than L. chinensis.
- Taxon
- E.junceus
Psathyrostachys junceae0 - Treatment
- 500 mmol NaCl·L-1e1
- Outcome
- seed germination ratee1
- Value
- 18.1%e1
- Qualifier
- higher salt tolerancee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A.elongatum,F.arundinacea and E.junceus had higher salt tolerance”
e1“Their seed germination rate reached 17.3%,20%,and 18.1%,respectively,at 500 mmol NaCl·L-1”
Claim · model-written summary
Root length and shoot height of the test grasses were significantly negatively correlated with NaCl concentration.
Verbatim
e0“The root length and shoot height of test grasses were significantly negatively correlated with NaCl concentration”
Claim · model-written summary
E. junceus had the greatest decrement in root length with increasing NaCl.
- Taxon
- E.junceusPsathyrostachys junceae0
- Treatment
- increase of NaCl concentratione0
- Outcome
- decrement of its root lengthe0
- Direction
- greatest decremente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the increase of NaCl concentration,E.junceus had the greatest decrement of its root length while A.elongatum had the smallest one”
Claim · model-written summary
A. elongatum had the smallest decrement in root length with increasing NaCl.
- Taxon
- A.elongatume0
- Treatment
- increase of NaCl concentratione0
- Outcome
- decrement of its root lengthe0
- Direction
- smalleste0
Not reportedComparator
Verbatim
e0“With the increase of NaCl concentration,E.junceus had the greatest decrement of its root length while A.elongatum had the smallest one”
Claim · model-written summary
L. chinensis had the greatest decrement in shoot length with increasing NaCl.
- Taxon
- L.chinensisLeymus chinensise0
- Outcome
- decrement of its shoot lengthe0
- Direction
- greatest decremente0
Not reportedTreatmentComparator
Verbatim
e0“and L.chinensis had the greatest decrement of its shoot length while A.elongatum had the smallest one”
Claim · model-written summary
A. elongatum had the smallest decrement in shoot length with increasing NaCl.
Not reportedTreatmentComparator
Verbatim
e0“and L.chinensis had the greatest decrement of its shoot length while A.elongatum had the smallest one”
Claim · model-written summary
The root/shoot ratio of L. chinensis increased with increasing NaCl concentration.
- Taxon
- L.chinensisLeymus chinensise0
- Treatment
- increasing NaCl concentratione0
- Outcome
- root/shoot ratioe0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“The root/shoot ratio of L.chinensis increased while that of the other three grasses decreased with increasing NaCl concentration”
Claim · model-written summary
The root/shoot ratio of the other three grasses decreased with increasing NaCl concentration.
- Taxon
- the other three grassese0
- Treatment
- increasing NaCl concentratione0
- Outcome
- root/shoot ratioe0
- Direction
- decreasede0
Not reportedComparator
Verbatim
e0“The root/shoot ratio of L.chinensis increased while that of the other three grasses decreased with increasing NaCl concentration”
Claim · model-written summary
For L. chinensis the inhibitory effect of NaCl was stronger on root growth than on shoot growth.
Verbatim
e0“for L.chinensis,the inhibitory effect of NaCl was stronger on root growth than on shoot growth,while for the other three grasses,it was in adverse”
Claim · model-written summary
For the other three grasses the inhibitory effect of NaCl was stronger on shoot growth than on root growth.
Verbatim
e0“for L.chinensis,the inhibitory effect of NaCl was stronger on root growth than on shoot growth,while for the other three grasses,it was in adverse”
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1 paper in the same direction as this paper · 5 in the opposite direction
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See all 7 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.