Abstract
Drought stress poses a significant threat to agricultural productivity, especially in areas susceptible to water scarcity. Sunflower (Helianthus annuus L.) is a widely cultivated oilseed crop with considerable potential globally. Jasmonic acid, a plant growth regulator, plays a crucial role in alleviating the adverse impacts of drought stress on the morphological, biochemical, and physiological characteristics of crops. Experimental detail includes sunflower varieties (Armani Gold, KQS-HSF-1, Parsun, and ESFH-3391), four drought stress levels (0, 25%, 50%, and 75% drought stress), and three levels (0, 40ppm, 80ppm) of jasmonic acid. The 0% drought stress and 0ppm jasmonic acid were considered as control treatments. The experimental design was a completely randomized design with three replicates. Drought stress significantly reduced the growth in all varieties. However, the exogenous application of jasmonic acid at concentrations of 40ppm and 80ppm enhanced growth parameters, shoot and root length (1.93%, 19%), shoot and root fresh weight (18.5%, 25%), chlorophyll content (36%), photosynthetic rate (22%), transpiration rate (40%), WUE (20%), MDA (6.5%), Phenolics (19%), hydrogen peroxide (7%) proline (28%) and glycine betaine (15-30%) under water-stressed conditions, which was closely linked to the increase in stomatal activity stimulated by jasmonic acid. Furthermore, JA 80 ppm was found to be the most appropriate dose to reduce the effect of water stress in all sunflower varieties. It was concluded that the foliar application of JA has the potential to enhance drought tolerance by improving the morphological, biochemical, and physiological of sunflower.
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Claims 13
Claim · model-written summary
Drought significantly reduced growth across sunflower varieties.
- Taxon
- Sunflower
Helianthus annuuse1 - Treatment
- Drought stresse0
- Outcome
- growthe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought stress significantly reduced the growth in all varieties”
e1“Sunflower (Helianthus annuus L.)”
Claim · model-written summary
Jasmonic acid increased shoot and root length under water stress by 1.93% and 19%, respectively.
- Taxon
- SunflowerHelianthus annuuse2
- Treatment
- jasmonic acid at concentrations of 40ppm and 80ppme0
- Outcome
- shoot and root lengthe0
- Direction
- enhancede0
- Value
- 1.93%, 19%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the exogenous application of jasmonic acid at concentrations of 40ppm and 80ppm enhanced growth parameters, shoot and root length (1.93%, 19%)”
e1“under water-stressed conditions”
e2“Sunflower (Helianthus annuus L.)”
Claim · model-written summary
Jasmonic acid increased shoot and root fresh weight by 18.5% and 25% under water stress.
- Taxon
- SunflowerHelianthus annuuse2
- Treatment
- jasmonic acid at concentrations of 40ppm and 80ppme1
- Outcome
- shoot and root fresh weighte0
- Direction
- enhancede1
- Value
- 18.5%, 25%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“shoot and root fresh weight (18.5%, 25%)”
e1“the exogenous application of jasmonic acid at concentrations of 40ppm and 80ppm enhanced growth parameters”
e2“Sunflower (Helianthus annuus L.)”
Claim · model-written summary
Jasmonic acid increased chlorophyll content by 36%.
- Taxon
- SunflowerHelianthus annuuse2
- Treatment
- jasmonic acid at concentrations of 40ppm and 80ppme1
- Outcome
- chlorophyll contente0
- Direction
- enhancede1
- Value
- 36%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“chlorophyll content (36%)”
e1“jasmonic acid at concentrations of 40ppm and 80ppm enhanced”
e2“Sunflower (Helianthus annuus L.)”
Claim · model-written summary
Jasmonic acid increased photosynthetic rate by 22%.
- Taxon
- SunflowerHelianthus annuuse2
- Treatment
- jasmonic acid at concentrations of 40ppm and 80ppme1
- Outcome
- photosynthetic ratee0
- Direction
- enhancede1
- Value
- 22%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“photosynthetic rate (22%)”
e1“jasmonic acid at concentrations of 40ppm and 80ppm enhanced”
e2“Sunflower (Helianthus annuus L.)”
Claim · model-written summary
Jasmonic acid increased transpiration rate by 40%.
- Taxon
- SunflowerHelianthus annuuse2
- Treatment
- jasmonic acid at concentrations of 40ppm and 80ppme1
- Outcome
- transpiration ratee0
- Direction
- enhancede1
- Value
- 40%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“transpiration rate (40%)”
e1“jasmonic acid at concentrations of 40ppm and 80ppm enhanced”
e2“Sunflower (Helianthus annuus L.)”
Claim · model-written summary
Jasmonic acid increased water use efficiency by 20%.
- Taxon
- SunflowerHelianthus annuuse2
- Treatment
- jasmonic acid at concentrations of 40ppm and 80ppme1
- Outcome
- WUEe0
- Direction
- enhancede1
- Value
- 20%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“WUE (20%)”
e1“jasmonic acid at concentrations of 40ppm and 80ppm enhanced”
e2“Sunflower (Helianthus annuus L.)”
Claim · model-written summary
Jasmonic acid increased MDA by 6.5% according to the reported list.
- Taxon
- SunflowerHelianthus annuuse2
- Treatment
- jasmonic acid at concentrations of 40ppm and 80ppme1
- Outcome
- MDAe0
- Direction
- enhancede1
- Value
- 6.5%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MDA (6.5%)”
e1“jasmonic acid at concentrations of 40ppm and 80ppm enhanced”
e2“Sunflower (Helianthus annuus L.)”
Claim · model-written summary
Jasmonic acid increased phenolics by 19%.
- Taxon
- SunflowerHelianthus annuuse2
- Treatment
- jasmonic acid at concentrations of 40ppm and 80ppme1
- Outcome
- Phenolicse0
- Direction
- enhancede1
- Value
- 19%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phenolics (19%)”
e1“jasmonic acid at concentrations of 40ppm and 80ppm enhanced”
e2“Sunflower (Helianthus annuus L.)”
Claim · model-written summary
Jasmonic acid increased hydrogen peroxide by 7% according to the reported list.
- Taxon
- SunflowerHelianthus annuuse2
- Treatment
- jasmonic acid at concentrations of 40ppm and 80ppme1
- Outcome
- hydrogen peroxidee0
- Direction
- enhancede1
- Value
- 7%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hydrogen peroxide (7%)”
e1“jasmonic acid at concentrations of 40ppm and 80ppm enhanced”
e2“Sunflower (Helianthus annuus L.)”
Claim · model-written summary
Jasmonic acid increased proline by 28%.
- Taxon
- SunflowerHelianthus annuuse2
- Treatment
- jasmonic acid at concentrations of 40ppm and 80ppme1
- Outcome
- prolinee0
- Direction
- enhancede1
- Value
- 28%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“proline (28%)”
e1“jasmonic acid at concentrations of 40ppm and 80ppm enhanced”
e2“Sunflower (Helianthus annuus L.)”
Claim · model-written summary
Jasmonic acid increased glycine betaine by 15-30%.
- Taxon
- SunflowerHelianthus annuuse2
- Treatment
- jasmonic acid at concentrations of 40ppm and 80ppme1
- Outcome
- glycine betainee0
- Direction
- enhancede1
- Value
- 15-30%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“glycine betaine (15-30%)”
e1“jasmonic acid at concentrations of 40ppm and 80ppm enhanced”
e2“Sunflower (Helianthus annuus L.)”
Claim · model-written summary
The authors identify 80 ppm JA as the most appropriate dose for reducing water stress across varieties.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- JA 80 ppme0
- Outcome
- most appropriate dose to reduce the effect of water stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“JA 80 ppm was found to be the most appropriate dose to reduce the effect of water stress in all sunflower varieties”
The same questions in other papers
drought · growth · Helianthus annuus (common sunflower)Results differ
49 papers in the same direction as this paper · 9 in the opposite direction
- negative
- positive
- positive
55 papers more in this group
See all 59 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.