Abstract
The effect of drought preconditioning before anthesis and post-anthesis waterlogging on water relation, photosynthesis, and growth was studied in tomatoes. Tomatoes were grown in pots and exposed to four treatments, whereby the plants were irrigated to 80% field capacity in T1 (control) and T2, 70% of the control (T3), and 50% of the control (T4). Drought was maintained for 30 days from 14 days after transplanting (DAT), and then the plants under T2, T3, and T4 were subjected to waterlogging at 60 and 80 DAT and lasted for 2 days. The results showed that drought pretreatments induced a decrease in leaf water potential, leaf insertion angle, photosynthetic rate, and transpiration rate. The stomatal closure and epinasty observed in response to drought pretreatment represented adaptive mechanisms to the followed waterlogging. The soil redox potential, photosynthetic rate, stomatal conductance, and transpiration rate of un-pretreatment were dramatically decreased by post-anthesis waterlogging; however, T3 was found to effectively enhance tolerance to a waterlogging event by decreasing leaf insertion angle and increasing photosynthetic rate, stomatal conductance, and transpiration rate. Fruit quality and yield were deteriorated considerably by waterlogging. However, T3 caused less damage to fruit quality and yield by post-anthesis waterlogging compared to T2.
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Claims 9
Claim · model-written summary
Drought pretreatment decreased leaf water potential, leaf insertion angle, and photosynthetic rate.
- Taxon
- tomatoes
Solanum lycopersicumt0 - Treatment
- drought pretreatmentse0
- Outcome
- leaf water potential, leaf insertion angle, photosynthetic ratee0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that drought pretreatments induced a decrease in leaf water potential, leaf insertion angle, photosynthetic rate, and transpiration rate”
t0“tomatoes”
Claim · model-written summary
Drought pretreatment decreased transpiration rate.
- Taxon
- tomatoesSolanum lycopersicumt0
- Treatment
- drought pretreatmentse0
- Outcome
- transpiration ratee0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drought pretreatments induced a decrease in leaf water potential, leaf insertion angle, photosynthetic rate, and transpiration rate”
t0“tomatoes”
Claim · model-written summary
Drought pretreatment produced stomatal closure and epinasty, interpreted as adaptive responses to later waterlogging.
- Taxon
- tomatoesSolanum lycopersicumt0
- Treatment
- drought pretreatmente0
- Outcome
- stomatal closure and epinastye0
- Qualifier
- adaptive mechanisms to the followed waterlogginge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The stomatal closure and epinasty observed in response to drought pretreatment represented adaptive mechanisms to the followed waterlogging”
t0“tomatoes”
Claim · model-written summary
Waterlogging dramatically decreased soil redox potential in tomatoes without pretreatment.
- Taxon
- tomatoesSolanum lycopersicumt0
- Treatment
- post-anthesis waterlogginge0
- Outcome
- soil redox potentiale0
- Direction
- decreasede0
- Comparator
- un-pretreatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The soil redox potential, photosynthetic rate, stomatal conductance, and transpiration rate of un-pretreatment were dramatically decreased by post-anthesis waterlogging”
t0“tomatoes”
Claim · model-written summary
Waterlogging dramatically decreased photosynthetic rate, stomatal conductance, and transpiration rate without pretreatment.
- Taxon
- tomatoesSolanum lycopersicumt0
- Treatment
- post-anthesis waterlogginge0
- Outcome
- photosynthetic rate, stomatal conductance, and transpiration ratee0
- Direction
- decreasede0
- Comparator
- un-pretreatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The soil redox potential, photosynthetic rate, stomatal conductance, and transpiration rate of un-pretreatment were dramatically decreased by post-anthesis waterlogging”
t0“tomatoes”
Claim · model-written summary
T3 pretreatment decreased leaf insertion angle during later waterlogging.
- Taxon
- tomatoesSolanum lycopersicumt0
- Treatment
- T3e0
- Outcome
- leaf insertion anglee0
- Direction
- decreasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“T3 was found to effectively enhance tolerance to a waterlogging event by decreasing leaf insertion angle and increasing photosynthetic rate, stomatal conductance, and transpiration rate”
t0“tomatoes”
Claim · model-written summary
T3 pretreatment increased photosynthetic rate, stomatal conductance, and transpiration rate during later waterlogging.
- Taxon
- tomatoesSolanum lycopersicumt0
- Treatment
- T3e0
- Outcome
- photosynthetic rate, stomatal conductance, and transpiration ratee0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“T3 was found to effectively enhance tolerance to a waterlogging event by decreasing leaf insertion angle and increasing photosynthetic rate, stomatal conductance, and transpiration rate”
t0“tomatoes”
Claim · model-written summary
Waterlogging deteriorated fruit quality and yield.
- Taxon
- tomatoesSolanum lycopersicumt0
- Treatment
- waterlogginge0
- Outcome
- Fruit quality and yielde0
- Direction
- deterioratede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit quality and yield were deteriorated considerably by waterlogging”
t0“tomatoes”
Claim · model-written summary
T3 produced less waterlogging damage to fruit quality and yield than T2.
- Taxon
- tomatoesSolanum lycopersicumt0
- Treatment
- T3e0
- Outcome
- fruit quality and yielde0
- Direction
- less damagee0
- Comparator
- T2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“T3 caused less damage to fruit quality and yield by post-anthesis waterlogging compared to T2”
t0“tomatoes”
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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.