Abstract
Response of physiological and biochemical indexes in leaves of four Lolium perenne varieties was compared under simulated drought stress using different concentrations of PEG solution.Oupec,with the highest relative water content and least decreasing changes,the lowest electrical conductivities,and the smallest increasing rates of MDA contents under PEG stress had more tolerant membrane systems and was the most resistant to osmotic stress,while the resistance of Polim was relatively weaker.Proline accumulation in leaves of the four varieties increased and Oupec with rapid increases in proline contents had the strongest resistance to PEG stress.Activities of superoxide dismutase(SOD) in leaves of the four varieties increased during the initial stress stages(5% PEG) and decreased continuously with more severe stress.Oupec and Polim had the strongest and the weakest drought resistance respectively.The four L.perenne varieties had reduced relative water contents and activities of superoxide dismutase(SOD),increased permeability of plasma,MDA contents and proline accumulation under PEG stress and had differences in rates of change for the response indices.
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Claims 9
Claim · model-written summary
Oupec was the most resistant to osmotic stress under PEG stress, while Polim was relatively weaker.
- Taxon
- Lolium perenne
Lolium perennee0 - Material
- Oupece1
- Treatment
- PEG stresse1
- Outcome
- resistant to osmotic stresse1
- Direction
- most resistante1
- Comparator
- Polime2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in leaves of four Lolium perenne varieties was compared under simulated drought stress using different concentrations of PEG solution”
e1“Oupec,with the highest relative water content and least decreasing changes,the lowest electrical conductivities,and the smallest increasing rates of MDA contents under PEG stress had more tolerant membrane systems and was the most resistant to osmotic stress”
e2“the resistance of Polim was relatively weaker”
Claim · model-written summary
Oupec had the highest relative water content under PEG stress.
- Taxon
- Lolium perenneLolium perennee0
- Material
- Oupece1
- Treatment
- PEG stresse1
- Outcome
- relative water contente1
- Direction
- higheste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in leaves of four Lolium perenne varieties was compared under simulated drought stress using different concentrations of PEG solution”
e1“Oupec,with the highest relative water content and least decreasing changes,the lowest electrical conductivities,and the smallest increasing rates of MDA contents under PEG stress had more tolerant membrane systems and was the most resistant to osmotic stress”
Claim · model-written summary
Proline accumulation in leaves of all four varieties increased under PEG stress.
- Taxon
- Lolium perenneLolium perennee0
- Treatment
- PEG stresse5
- Outcome
- Proline accumulatione4
- Direction
- increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in leaves of four Lolium perenne varieties was compared under simulated drought stress using different concentrations of PEG solution”
e4“Proline accumulation in leaves of the four varieties increased”
e5“increased permeability of plasma,MDA contents and proline accumulation under PEG stress”
Claim · model-written summary
Oupec, with rapid proline increases, had the strongest resistance to PEG stress.
- Taxon
- Lolium perenneLolium perennee0
- Material
- Oupece6
- Treatment
- PEG stresse6
- Outcome
- resistance to PEG stresse6
- Direction
- strongeste6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in leaves of four Lolium perenne varieties was compared under simulated drought stress using different concentrations of PEG solution”
e6“Oupec with rapid increases in proline contents had the strongest resistance to PEG stress”
Claim · model-written summary
Superoxide dismutase activity in leaves of the four varieties increased during the initial stress stages at 5% PEG.
- Taxon
- Lolium perenneLolium perennee0
- Treatment
- 5% PEGe7
- Outcome
- Activities of superoxide dismutase(SOD)e7
- Direction
- increasede7
- Qualifier
- initial stress stages(5% PEG)e7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in leaves of four Lolium perenne varieties was compared under simulated drought stress using different concentrations of PEG solution”
e7“Activities of superoxide dismutase(SOD) in leaves of the four varieties increased during the initial stress stages(5% PEG)”
Claim · model-written summary
Superoxide dismutase activity in leaves of the four varieties decreased continuously with more severe stress.
- Taxon
- Lolium perenneLolium perennee0
- Treatment
- PEG stresse5
- Outcome
- Activities of superoxide dismutase(SOD)e7
- Direction
- decreased continuouslye1
- Qualifier
- more severe stresse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in leaves of four Lolium perenne varieties was compared under simulated drought stress using different concentrations of PEG solution”
e7“Activities of superoxide dismutase(SOD) in leaves of the four varieties increased during the initial stress stages(5% PEG)”
e1“and decreased continuously with more severe stress”
e5“increased permeability of plasma,MDA contents and proline accumulation under PEG stress”
Claim · model-written summary
Oupec and Polim had the strongest and weakest drought resistance, respectively.
- Taxon
- Lolium perenneLolium perennee0
- Material
- Oupec and Polime1
- Outcome
- drought resistancee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in leaves of four Lolium perenne varieties was compared under simulated drought stress using different concentrations of PEG solution”
e1“Oupec and Polim had the strongest and the weakest drought resistance respectively”
Claim · model-written summary
Under PEG stress the four varieties had reduced relative water contents and superoxide dismutase activities.
- Taxon
- Lolium perenneLolium perennee0
- Treatment
- PEG stresse5
- Outcome
- relative water contents and activities of superoxide dismutase(SOD)e1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in leaves of four Lolium perenne varieties was compared under simulated drought stress using different concentrations of PEG solution”
e1“had reduced relative water contents and activities of superoxide dismutase(SOD)”
e5“increased permeability of plasma,MDA contents and proline accumulation under PEG stress”
Claim · model-written summary
Under PEG stress the four varieties had increased plasma permeability and MDA contents.
- Taxon
- Lolium perenneLolium perennee0
- Treatment
- PEG stresse5
- Outcome
- permeability of plasma,MDA contentse5
- Direction
- increasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in leaves of four Lolium perenne varieties was compared under simulated drought stress using different concentrations of PEG solution”
e5“increased permeability of plasma,MDA contents and proline accumulation under PEG stress”
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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.