Abstract
Abstract The ability of a plant to recover from temporary and/or prolonged stress and the rate of recovery are of great importance in crop production. However, the information available on this subject is relatively scarce. A study was conducted to evaluate the recovery of irrigated cotton ( Gossypium hirsutum L. ‘Acala 15–17’) following soil moisture stress of various durations through the measurements of soil moisture stress (Ψ s ) using 1) the soil‐moisture retention function, leaf water potential (Ψ l ), by pressure bomb, and 2) leaf diffusion resistance (R l ), by diffusive resistance porometer. Photosynthesis was measured by an infrared gas analyzer, and transpiration by weighing. The experiment was conducted in a controlled climate room. Leaf water potential (Ψ l ) was linearly related to that in the soil (Ψ s ) (Ψ l = 0.609 Ψ s − 9.77 atm). Diffusion resistance of the leaves showed a curvilinear dependence on Ψ s with a marked inflection between −10 and −14 atm. Neither leaf resistance nor transpiration fully returned to pre‐stress conditions after irrigation, and even the partial recovery required several days. Continuous measurements of net photosynthesis also showed a delayed and only partial recovery from soil water stress. It is concluded that the observed reduction in dry matter increase is due mainly to the failure in net photosynthesis recovery after re‐irrigation.
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Claims 6
Claim · model-written summary
Cotton leaf water potential was linearly related to soil water potential.
- Taxon
- Cotton
Gossypium hirsutumt0 - Outcome
- Leaf water potential (Ψ l )e0
- Value
- Ψ l = 0.609 Ψ s − 9.77 atme0
- Setting
- soil (Ψ s )e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf water potential (Ψ l ) was linearly related to that in the soil (Ψ s ) (Ψ l = 0.609 Ψ s − 9.77 atm).”
t0“Cotton”
Claim · model-written summary
Cotton leaf diffusion resistance depended curvilinearly on soil water potential, with an inflection between −10 and −14 atm.
- Taxon
- CottonGossypium hirsutumt0
- Outcome
- Diffusion resistance of the leavese0
- Value
- −10 and −14 atme0
- Setting
- Ψ se0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Diffusion resistance of the leaves showed a curvilinear dependence on Ψ s with a marked inflection between −10 and −14 atm.”
t0“Cotton”
Claim · model-written summary
Cotton leaf resistance recovered only partly after irrigation and took several days.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- irrigatione0
- Outcome
- leaf resistancee0
- Direction
- Neithere0
- Qualifier
- several dayse0
- Comparator
- pre‐stress conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neither leaf resistance nor transpiration fully returned to pre‐stress conditions after irrigation, and even the partial recovery required several days.”
t0“Cotton”
Claim · model-written summary
Cotton transpiration recovered only partly after irrigation and took several days.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- irrigatione0
- Outcome
- transpiratione0
- Direction
- Neithere0
- Qualifier
- several dayse0
- Comparator
- pre‐stress conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neither leaf resistance nor transpiration fully returned to pre‐stress conditions after irrigation, and even the partial recovery required several days.”
t0“Cotton”
Claim · model-written summary
Cotton net photosynthesis showed delayed, partial recovery from soil water stress.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- soil water stresse0
- Outcome
- net photosynthesise0
- Direction
- partial recoverye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Continuous measurements of net photosynthesis also showed a delayed and only partial recovery from soil water stress.”
t0“Cotton”
Claim · model-written summary
The authors attribute reduced cotton dry matter increase mainly to failed net photosynthesis recovery after re-irrigation.
- Taxon
- CottonGossypium hirsutumt0
- Outcome
- dry matter increasee0
- Direction
- reductione0
- Qualifier
- failure in net photosynthesis recovery after re‐irrigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the observed reduction in dry matter increase is due mainly to the failure in net photosynthesis recovery after re‐irrigation”
t0“Cotton”
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See all 53 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.