Abstract
ABSTRACT The goal of this work was to evaluate the physiological responses of cowpea under water stress and rehydration in conventional and no-tillage systems. We evaluated two crop systems (conventional and no tillage) and three water conditions (no stress, moderate stress and severe stress). The following were determined: leaf area, total dry matter, photosynthetic rate, stomatal conductance, transpiration rate, internal CO2 concentration and leaf water potential. Water stress affected all variables evaluated, with the exception of leaf water potential. Cowpea recovered with respect to all variables after rehydration at both stress levels. Stomatal closure is an important drought tolerance mechanism, and cowpea can be considered a conservative species (i.e., one that prioritizes water status maintenance rather than photosynthetic rate). Planting systems did not affect photosynthetic rate. The tillage system promoted greater accumulation of biomass and higher leaf area.
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Claims 8
Claim · model-written summary
Water stress affected cowpea leaf area and total dry matter.
- Taxon
- cowpea
Vigna unguiculatat0 - Treatment
- Water stresse0
- Outcome
- all variables evaluatede0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water stress affected all variables evaluated, with the exception of leaf water potential.”
t0“COWPEA”
Claim · model-written summary
Leaf water potential was the exception to effects of water stress.
- Taxon
- COWPEAVigna unguiculatat0
- Treatment
- Water stresse0
- Outcome
- leaf water potentiale0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water stress affected all variables evaluated, with the exception of leaf water potential.”
t0“COWPEA”
Claim · model-written summary
Cowpea recovered across evaluated variables after rehydration at both stress levels.
- Taxon
- CowpeaVigna unguiculatae0
- Treatment
- rehydratione0
- Outcome
- all variablese0
- Direction
- recoverede0
- Qualifier
- both stress levelse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cowpea recovered with respect to all variables after rehydration at both stress levels.”
Claim · model-written summary
Stomatal closure was identified as an important drought tolerance mechanism.
- Taxon
- COWPEAVigna unguiculatat0
- Outcome
- drought tolerancee0
- Qualifier
- Stomatal closuree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stomatal closure is an important drought tolerance mechanism”
t0“COWPEA”
Claim · model-written summary
Cowpea was characterized as conserving water status over photosynthetic rate.
- Taxon
- cowpeaVigna unguiculatae0
- Outcome
- prioritizes water status maintenance rather than photosynthetic ratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cowpea can be considered a conservative species (i.e., one that prioritizes water status maintenance rather than photosynthetic rate)”
Claim · model-written summary
Planting systems did not affect photosynthetic rate.
- Taxon
- COWPEAVigna unguiculatat0
- Treatment
- Planting systemse0
- Outcome
- photosynthetic ratee0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Planting systems did not affect photosynthetic rate.”
t0“COWPEA”
Claim · model-written summary
The tillage system increased biomass accumulation.
- Taxon
- COWPEAVigna unguiculatat0
- Treatment
- tillage systeme0
- Outcome
- accumulation of biomasse0
- Direction
- greatere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The tillage system promoted greater accumulation of biomass and higher leaf area.”
t0“COWPEA”
Claim · model-written summary
The tillage system increased leaf area.
- Taxon
- COWPEAVigna unguiculatat0
- Treatment
- tillage systeme0
- Outcome
- leaf areae0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The tillage system promoted greater accumulation of biomass and higher leaf area.”
t0“COWPEA”
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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.