Abstract
This study aimed to evaluate the physiological behavior of faveleira (Cnidoscolus quercifolius Pohl) plants grown in the field, in Caatinga, during wet and dry seasons. Adult plants were selected for evaluation in March and April (wet season) and May and June (dry season), during 2016. We evaluated the soil water content, water potential (Ψw), osmotic potential (Ψπ), relative water content (RWC), stomatal conductance (gs), transpiration rate (E), photosynthetic rate (A), intercellular CO2 concentration (Ci), instantaneous water use efficiency (A/E) and carboxylation efficiency (A/Ci). The reduction in water availability in the soil promoted a marked decrease in soil water potential, which was more affected than the relative water content. The opening of the stomata was affected by the decrease in soil moisture content, reducing the stomatal conductance, transpiration rate, photosynthesis rate, instantaneous water use efficiency and carboxylation efficiency. The photosynthesis was more affected than transpiration by the reduction in soil moisture content.
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Claims 5
Claim · model-written summary
Reduced soil water availability markedly decreased soil water potential, more than relative water content.
- Treatment
- reduction in water availability in the soile0
- Outcome
- soil water potentiale0
- Direction
- decreasee0
- Qualifier
- more affected than the relative water contente0
Not reportedTaxon
Verbatim
e0“The reduction in water availability in the soil promoted a marked decrease in soil water potential, which was more affected than the relative water content.”
Claim · model-written summary
Lower soil moisture affected stomatal opening in faveleira.
- Taxon
- Cnidoscolus quercifolius Pohl
Cnidoscolus quercifoliust0 - Treatment
- decrease in soil moisture contente0
- Outcome
- opening of the stomatae0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The opening of the stomata was affected by the decrease in soil moisture content”
t0“Cnidoscolus quercifolius Pohl”
Claim · model-written summary
Lower soil moisture reduced stomatal conductance, transpiration rate and photosynthesis rate in faveleira.
- Taxon
- Cnidoscolus quercifolius PohlCnidoscolus quercifoliust0
- Treatment
- decrease in soil moisture contente0
- Outcome
- stomatal conductance, transpiration rate, photosynthesis ratee0
- Direction
- reducinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The opening of the stomata was affected by the decrease in soil moisture content, reducing the stomatal conductance, transpiration rate, photosynthesis rate, instantaneous water use efficiency and carboxylation efficiency.”
t0“Cnidoscolus quercifolius Pohl”
Claim · model-written summary
Lower soil moisture reduced instantaneous water use efficiency and carboxylation efficiency in faveleira.
- Taxon
- Cnidoscolus quercifolius PohlCnidoscolus quercifoliust0
- Treatment
- decrease in soil moisture contente0
- Outcome
- instantaneous water use efficiency and carboxylation efficiencye0
- Direction
- reducinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The opening of the stomata was affected by the decrease in soil moisture content, reducing the stomatal conductance, transpiration rate, photosynthesis rate, instantaneous water use efficiency and carboxylation efficiency.”
t0“Cnidoscolus quercifolius Pohl”
Claim · model-written summary
Soil drying affected photosynthesis more than transpiration in faveleira.
- Taxon
- Cnidoscolus quercifolius PohlCnidoscolus quercifoliust0
- Treatment
- reduction in soil moisture contente0
- Outcome
- photosynthesise0
- Qualifier
- more affectede0
- Comparator
- transpiratione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The photosynthesis was more affected than transpiration by the reduction in soil moisture content.”
t0“Cnidoscolus quercifolius Pohl”