Abstract
-6 M) prior to sowing. Foliar application of ABA (10 -6 M) was made at tillering stage, 40 days after sowing (40 DAS) in both cultivars. Drought stress was induced at panicle initiation (PI) (65 DAS) and soft dough (SD) (105 DAS) stages with re-watering at incipient wilting (12% soil moisture). Drought induced significant decrease in endogenous level of IAA, GA, sugar and protein contents in leaves at SD stage, while ABA and proline contents increased significantly as compared to control. In grains, drought induced decreases in IAA, sugar and protein content were greater at PI stage in both cultivars. Stomatal resistance was significantly increased in flag and penultimate leaves at PI stage. ABA treatments ameliorated the adverse effects of drought stress for most of the physiological parameters but were ineffective to restore the drought-induced decrease in GA content. On-rewatering, the recovery of prestressed plants was significantly enhanced under ABA seed soaking and foliar spray treatments as compared to drought alone. It is inferred that the mechanism of ABA-induced tolerance to drought stress appears to be involved in maintenance of water budget by decreasing GA, increasing stomatal resistance and by osmoregulation as observed by increase in proline accumulation, and enhanced grain filling to bring early maturity in rice over control.
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Claims 9
Claim · model-written summary
Drought significantly decreased leaf IAA, GA, sugar and protein at the soft dough stage.
- Taxon
- rice
Oryza sativat0 - Organ / stage
- leaves at SD stagee0
- Treatment
- Droughte0
- Outcome
- endogenous level of IAA, GA, sugar and protein contentse0
- Direction
- decreasee0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought induced significant decrease in endogenous level of IAA, GA, sugar and protein contents in leaves at SD stage, while ABA and proline contents increased significantly as compared to control.”
t0“Physiology and productivity of rice crop influenced by drought stress induced at different developmental stages”
Claim · model-written summary
Drought significantly increased leaf ABA and proline at the soft dough stage.
- Taxon
- riceOryza sativat0
- Organ / stage
- leaves at SD stagee0
- Treatment
- Droughte0
- Outcome
- ABA and proline contentse0
- Direction
- increasede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought induced significant decrease in endogenous level of IAA, GA, sugar and protein contents in leaves at SD stage, while ABA and proline contents increased significantly as compared to control.”
t0“Physiology and productivity of rice crop influenced by drought stress induced at different developmental stages”
Claim · model-written summary
Drought reductions in grain IAA, sugar and protein were greater at panicle initiation.
- Taxon
- riceOryza sativat0
- Organ / stage
- grainse0
- Treatment
- droughte0
- Outcome
- IAA, sugar and protein contente0
- Direction
- decreasese0
- Comparator
- PI stagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In grains, drought induced decreases in IAA, sugar and protein content were greater at PI stage in both cultivars.”
t0“Physiology and productivity of rice crop influenced by drought stress induced at different developmental stages”
Claim · model-written summary
Drought significantly increased stomatal resistance in flag and penultimate leaves at panicle initiation.
- Taxon
- riceOryza sativat0
- Organ / stage
- flag and penultimate leaves at PI stagee0
- Treatment
- Drought stresse1
- Outcome
- Stomatal resistancee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stomatal resistance was significantly increased in flag and penultimate leaves at PI stage.”
e1“Drought stress was induced at panicle initiation (PI) (65 DAS) and soft dough (SD) (105 DAS) stages with re-watering at incipient wilting (12% soil moisture).”
t0“Physiology and productivity of rice crop influenced by drought stress induced at different developmental stages”
Claim · model-written summary
ABA treatments ameliorated adverse drought effects on most physiological parameters.
- Taxon
- riceOryza sativat0
- Treatment
- ABA treatmentse0
- Outcome
- most of the physiological parameterse0
- Direction
- amelioratede0
- Comparator
- drought stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ABA treatments ameliorated the adverse effects of drought stress for most of the physiological parameters but were ineffective to restore the drought-induced decrease in GA content.”
t0“Physiology and productivity of rice crop influenced by drought stress induced at different developmental stages”
Claim · model-written summary
ABA treatments did not restore drought-reduced GA content.
- Taxon
- riceOryza sativat0
- Treatment
- ABA treatmentse0
- Outcome
- GA contente0
- Direction
- ineffective to restoree0
- Comparator
- drought stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ABA treatments ameliorated the adverse effects of drought stress for most of the physiological parameters but were ineffective to restore the drought-induced decrease in GA content.”
t0“Physiology and productivity of rice crop influenced by drought stress induced at different developmental stages”
Claim · model-written summary
ABA seed soaking significantly improved recovery after rewatering versus drought alone.
- Taxon
- riceOryza sativat0
- Treatment
- ABA seed soakinge0
- Outcome
- recovery of prestressed plantse0
- Direction
- enhancede0
- Comparator
- drought alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On-rewatering, the recovery of prestressed plants was significantly enhanced under ABA seed soaking and foliar spray treatments as compared to drought alone.”
t0“Physiology and productivity of rice crop influenced by drought stress induced at different developmental stages”
Claim · model-written summary
ABA foliar spray significantly improved recovery after rewatering versus drought alone.
- Taxon
- riceOryza sativat0
- Treatment
- foliar spray treatmentse0
- Outcome
- recovery of prestressed plantse0
- Direction
- enhancede0
- Comparator
- drought alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On-rewatering, the recovery of prestressed plants was significantly enhanced under ABA seed soaking and foliar spray treatments as compared to drought alone.”
t0“Physiology and productivity of rice crop influenced by drought stress induced at different developmental stages”
Claim · model-written summary
Authors inferred ABA drought tolerance involves water budget maintenance, stomatal resistance, proline accumulation and grain filling.
- Taxon
- riceOryza sativae0
- Treatment
- ABAe0
- Outcome
- ABA-induced tolerance to drought stresse0
- Qualifier
- maintenance of water budget by decreasing GA, increasing stomatal resistance and by osmoregulation as observed by increase in proline accumulation, and enhanced grain filling to bring early maturitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It is inferred that the mechanism of ABA-induced tolerance to drought stress appears to be involved in maintenance of water budget by decreasing GA, increasing stomatal resistance and by osmoregulation as observed by increase in proline accumulation, and enhanced grain filling to bring early maturity in rice over control.”
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See all 45 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.