Abstract
The relationship between soil water content and water use efficiency (WUE) of apple tree leaf was examined, and the mechanism of WUE variation was also studied by using pot-culture. The results showed that the WUE was upmost when soil water relative content (SWC) reached 52.0%. The increase of WUE when SWC decreased from 77.2% to 52.0% was mainly caused by the change of stomatal conductance. The decline of carboxylation efficiency resulted in the decrease of WUE when SWC decreased from 52.0% to 20.1%. The WUE returned up after being rewatered, but could not reach the control level within a week. The WUE decreased when the soil was waterlogged, but reached the control level in three days after being waterlogged. After the third day, the WUE decreased gradually with the extending of the time being waterlogged. On the sixth day being waterlogged, the carboxylation efficiency decreased.
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Claims 8
Claim · model-written summary
Apple leaf WUE was highest at 52.0% soil water relative content.
- Taxon
- apple
Malus domesticat0 - Outcome
- WUEe0
- Direction
- upmoste0
- Value
- 52.0%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that the WUE was upmost when soil water relative content (SWC) reached 52.0%.”
t0“apple leaves”
Claim · model-written summary
Reduced stomatal conductance mainly explained the WUE increase as SWC fell from 77.2% to 52.0%.
- Taxon
- appleMalus domesticat0
- Outcome
- increase of WUEe0
- Direction
- increasee0
- Qualifier
- change of stomatal conductancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increase of WUE when SWC decreased from 77.2% to 52.0% was mainly caused by the change of stomatal conductance.”
t0“apple leaves”
Claim · model-written summary
Declining carboxylation efficiency explained lower WUE as SWC fell from 52.0% to 20.1%.
- Taxon
- appleMalus domesticat0
- Outcome
- decrease of WUEe0
- Direction
- decreasee0
- Qualifier
- decline of carboxylation efficiencye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The decline of carboxylation efficiency resulted in the decrease of WUE when SWC decreased from 52.0% to 20.1%.”
t0“apple leaves”
Claim · model-written summary
WUE rose after rewatering but remained below control within a week.
- Taxon
- appleMalus domesticat0
- Treatment
- rewaterede0
- Outcome
- WUEe0
- Direction
- returned upe0
- Qualifier
- within a weeke0
- Comparator
- control levele0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The WUE returned up after being rewatered, but could not reach the control level within a week.”
t0“apple leaves”
Claim · model-written summary
Waterlogging lowered WUE.
- Taxon
- appleMalus domesticat0
- Treatment
- waterloggede0
- Outcome
- WUEe0
- Direction
- decreasede0
- Comparator
- control levele0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The WUE decreased when the soil was waterlogged, but reached the control level in three days after being waterlogged.”
t0“apple leaves”
Claim · model-written summary
WUE reached control level three days after waterlogging.
- Taxon
- appleMalus domesticat0
- Treatment
- waterloggede0
- Outcome
- WUEe0
- Qualifier
- three dayse0
- Comparator
- control levele0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The WUE decreased when the soil was waterlogged, but reached the control level in three days after being waterlogged.”
t0“apple leaves”
Claim · model-written summary
WUE gradually declined after day three as waterlogging continued.
- Taxon
- appleMalus domesticat0
- Outcome
- WUEe0
- Direction
- decreased graduallye0
- Qualifier
- After the third daye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After the third day, the WUE decreased gradually with the extending of the time being waterlogged.”
t0“apple leaves”
Claim · model-written summary
Carboxylation efficiency fell on the sixth day of waterlogging.
- Taxon
- appleMalus domesticat0
- Outcome
- carboxylation efficiencye0
- Direction
- decreasede0
- Qualifier
- sixth daye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On the sixth day being waterlogged, the carboxylation efficiency decreased.”
t0“apple leaves”
The same questions in other papers
rewatering · physiology: water · Malus domestica (apple)Positive and negative results
1 in the opposite direction
- negative
flooding · physiology: water · Malus domestica (apple)Positive and negative results
1 in the opposite direction
- 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.