Abstract
A gradual reduction in leaf water potential (Ψleaf), net photosynthetic rate (P N), stomatal conductance, and transpiration rate was observed in two drought tolerant (C 306 and K 8027) and two susceptible (RW 893 and 899) genotypes subjected to water stress. The extent of reduction was lower in K 8027 and C 306 and higher in RW 893 and RW 899. Rewatering the plants after 5 d of stress restored P N and other gas exchange traits in all four cultivars. Water stress had no significant effect on variable to maximum fluorescence ratio (Fv/Fm) indicating that water stress had no effect on primary photochemistry of photosystem 2 (PS2). However, water stress reduced the efficiency of excitation energy transfer (F'v/F'm) and the quantum yield of electron transport (ΦPS2). The reduction was more pronounced in susceptible cultivars. Water stress had no significant effect on photochemical quenching, however, the non-photochemical quenching increased by water stress.
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Claims 9
Claim · model-written summary
Water stress gradually reduced leaf water potential, photosynthetic rate, and stomatal conductance in four wheat genotypes.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- water stresse0
- Outcome
- leaf water potential (Ψleaf), net photosynthetic rate (P N), stomatal conductancee0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A gradual reduction in leaf water potential (Ψleaf), net photosynthetic rate (P N), stomatal conductance, and transpiration rate was observed in two drought tolerant (C 306 and K 8027) and two susceptible (RW 893 and 899) genotypes subjected to water stress.”
t0“wheat cultivars”
Claim · model-written summary
Water stress reduced transpiration rate in the four wheat genotypes.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- water stresse0
- Outcome
- transpiration ratee0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A gradual reduction in leaf water potential (Ψleaf), net photosynthetic rate (P N), stomatal conductance, and transpiration rate was observed in two drought tolerant (C 306 and K 8027) and two susceptible (RW 893 and 899) genotypes subjected to water stress.”
t0“wheat cultivars”
Claim · model-written summary
Reductions were smaller in K 8027 and C 306 than in RW 893 and RW 899.
- Taxon
- wheatTriticum aestivumt0
- Material
- K 8027 and C 306e0
- Outcome
- extent of reductione0
- Direction
- lowere0
- Comparator
- RW 893 and RW 899e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The extent of reduction was lower in K 8027 and C 306 and higher in RW 893 and RW 899.”
t0“wheat cultivars”
Claim · model-written summary
Rewatering after five days of stress restored photosynthesis and gas exchange traits in all four cultivars.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Rewatering the plants after 5 d of stresse0
- Outcome
- P N and other gas exchange traitse0
- Direction
- restorede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rewatering the plants after 5 d of stress restored P N and other gas exchange traits in all four cultivars.”
t0“wheat cultivars”
Claim · model-written summary
Water stress had no significant effect on Fv/Fm.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Water stresse0
- Outcome
- variable to maximum fluorescence ratio (Fv/Fm)e0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water stress had no significant effect on variable to maximum fluorescence ratio (Fv/Fm)”
t0“wheat cultivars”
Claim · model-written summary
Water stress reduced excitation energy transfer efficiency and electron transport quantum yield.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- water stresse0
- Outcome
- efficiency of excitation energy transfer (F'v/F'm) and the quantum yield of electron transport (ΦPS2)e0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“water stress reduced the efficiency of excitation energy transfer (F'v/F'm) and the quantum yield of electron transport (ΦPS2)”
t0“wheat cultivars”
Claim · model-written summary
The reduction in excitation energy transfer and electron transport was greater in susceptible cultivars.
- Taxon
- wheatTriticum aestivumt0
- Material
- susceptible cultivarse0
- Outcome
- reductione0
- Direction
- more pronouncede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The reduction was more pronounced in susceptible cultivars.”
e1“water stress reduced the efficiency of excitation energy transfer (F'v/F'm) and the quantum yield of electron transport (ΦPS2)”
t0“wheat cultivars”
Claim · model-written summary
Water stress had no significant effect on photochemical quenching.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Water stresse0
- Outcome
- photochemical quenchinge0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water stress had no significant effect on photochemical quenching”
t0“wheat cultivars”
Claim · model-written summary
Water stress increased non-photochemical quenching.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- water stresse0
- Outcome
- non-photochemical quenchinge0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the non-photochemical quenching increased by water stress”
t0“wheat cultivars”
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