Abstract
In order to find out the ability of drought resistance of Larrea tridentata,the authors used Li-6400 portable photosynthesis system to measure the photosynthetic characteristics,transpiration and stomatal conductance of L.tridentata under different soil moisture treatments.The photosynthetic response curves were measured at the same time.The results showed that,the diurnal curves of net photosynthetic rate and transpiration rate were twin-peaked under better water conditions,and there was a significant midday depression.Under water stress,the average of net photosynthetic rate and transpiration rate depressed distinctly,especially the transpiration rate fell to the extreme low level.It reflected that the ability of reducing the moisture loss of L.tridentatais was strong.With the increase of water stress,photosynthesis was mainly adjusted by stoma,which showed that the ability of adapting the drought with the adjust of stoma of L.tridentata was strong.Light saturation point of L.tridentatais was high,reflecting that L.tridentata belongs to the masculine tree.Water stress had little influence on leaf's actinic process.Photosynthetic apparatus were not harmed by drought.Water utilization efficiency was raised to some extent with water stress.It showed that the ability of drought resistance of L.tridentata was strong.
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Claims 9
Claim · model-written summary
Under better water conditions, diurnal net photosynthetic rate was twin-peaked.
- Taxon
- Larrea tridentata
Larrea tridentatat0 - Treatment
- better water conditionse0
- Outcome
- net photosynthetic ratee0
- Qualifier
- twin-peaked under better water conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of soil moisture on photosynthetic characteristics of Larrea tridentata seedlings”
e0“the diurnal curves of net photosynthetic rate and transpiration rate were twin-peaked under better water conditions,and there was a significant midday depression”
Claim · model-written summary
Under better water conditions, the diurnal curves showed a significant midday depression.
- Taxon
- Larrea tridentataLarrea tridentatat0
- Treatment
- better water conditionse0
- Outcome
- midday depressione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of soil moisture on photosynthetic characteristics of Larrea tridentata seedlings”
e0“the diurnal curves of net photosynthetic rate and transpiration rate were twin-peaked under better water conditions,and there was a significant midday depression”
Claim · model-written summary
Under water stress, average net photosynthetic rate was depressed distinctly compared with better water conditions.
- Taxon
- Larrea tridentataLarrea tridentatat0
- Treatment
- water stresse1
- Outcome
- net photosynthetic ratee1
- Direction
- depressede1
- Comparator
- better water conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of soil moisture on photosynthetic characteristics of Larrea tridentata seedlings”
e0“the diurnal curves of net photosynthetic rate and transpiration rate were twin-peaked under better water conditions,and there was a significant midday depression”
e1“Under water stress,the average of net photosynthetic rate and transpiration rate depressed distinctly,especially the transpiration rate fell to the extreme low level”
Claim · model-written summary
Under water stress, transpiration rate fell to an extremely low level compared with better water conditions.
- Taxon
- Larrea tridentataLarrea tridentatat0
- Treatment
- water stresse1
- Outcome
- transpiration ratee1
- Direction
- felle1
- Qualifier
- extreme low levele1
- Comparator
- better water conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of soil moisture on photosynthetic characteristics of Larrea tridentata seedlings”
e0“the diurnal curves of net photosynthetic rate and transpiration rate were twin-peaked under better water conditions,and there was a significant midday depression”
e1“Under water stress,the average of net photosynthetic rate and transpiration rate depressed distinctly,especially the transpiration rate fell to the extreme low level”
Claim · model-written summary
With increasing water stress, photosynthesis was mainly adjusted by stomata.
- Taxon
- Larrea tridentataLarrea tridentatat0
- Treatment
- increase of water stresse2
- Outcome
- photosynthesise2
- Qualifier
- mainly adjusted by stomae2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of soil moisture on photosynthetic characteristics of Larrea tridentata seedlings”
e2“With the increase of water stress,photosynthesis was mainly adjusted by stoma”
Claim · model-written summary
Light saturation point of Larrea tridentata was high.
- Taxon
- Larrea tridentataLarrea tridentatat0
- Outcome
- Light saturation pointe3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of soil moisture on photosynthetic characteristics of Larrea tridentata seedlings”
e3“Light saturation point of L.tridentatais was high”
Claim · model-written summary
Water stress had little influence on the leaf's actinic process.
- Taxon
- Larrea tridentataLarrea tridentatat0
- Treatment
- Water stresse4
- Outcome
- leaf's actinic processe4
- Direction
- no_changeinferrede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of soil moisture on photosynthetic characteristics of Larrea tridentata seedlings”
e4“Water stress had little influence on leaf's actinic process”
Claim · model-written summary
Drought did not harm the photosynthetic apparatus.
- Taxon
- Larrea tridentataLarrea tridentatat0
- Treatment
- droughte5
- Outcome
- Photosynthetic apparatuse5
- Direction
- no_changeinferrede5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of soil moisture on photosynthetic characteristics of Larrea tridentata seedlings”
e5“Photosynthetic apparatus were not harmed by drought”
Claim · model-written summary
Water utilization efficiency was raised to some extent under water stress.
- Taxon
- Larrea tridentataLarrea tridentatat0
- Treatment
- water stresse6
- Outcome
- Water utilization efficiencye6
- Direction
- raisede6
- Qualifier
- to some extente6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effects of soil moisture on photosynthetic characteristics of Larrea tridentata seedlings”
e6“Water utilization efficiency was raised to some extent with water stress”
The same questions in other papers
drought · physiology: gas exchange · Larrea tridentata (creosote bush)Results agree
1 paper in the same direction as this paper
- positive
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.