Abstract
Our experiment was carried out in order to explore effects of plant growth regulators (PGR; thidiazuron, paclobutrazol, and ascorbic acid) on physiological traits of wheat genotypes under water surplus and deficit conditions. Study revealed that relative water content, membrane stability index, chlorophyll content, photosynthetic rate (PN), and maximal quantum yield of PSII improved with PGRs application across the genotypes both under irrigation and water stress. The response of HD 2733 genotype was more positive toward PGRs treatment as compared to other genotypes under water stress. Higher PN and chlorophyll contents were observed in HD 2987 followed by C 306 genotype under water-stress conditions. Moreover, Rubisco small subunit (SSU) expression was lower in wheat genotypes under water stress as compared to irrigated conditions. Application of PGRs led to upregulation of SSU under water stress, while no significant change was found in Rubisco level and activity under irrigated condition in dependence on PGRs treatments. Yield-related traits showed also significant reduction under water-stress conditions, while application of PGRs enhanced the yield and its components. Results indicated that the PGRs exhibited a positive interaction and synergetic effect on water stressed wheat plants in terms of photosynthetic machinery and yield.
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Claims 9
Claim · model-written summary
Plant growth regulators improved water content, membrane stability and chlorophyll content under irrigation and water stress.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- PGRs applicatione0
- Outcome
- relative water content, membrane stability index, chlorophyll contente0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“relative water content, membrane stability index, chlorophyll content, photosynthetic rate (PN), and maximal quantum yield of PSII improved with PGRs application across the genotypes both under irrigation and water stress”
t0“wheat”
Claim · model-written summary
Plant growth regulators improved photosynthetic rate and maximum PSII quantum yield.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- PGRs applicatione0
- Outcome
- photosynthetic rate (PN), and maximal quantum yield of PSIIe0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“relative water content, membrane stability index, chlorophyll content, photosynthetic rate (PN), and maximal quantum yield of PSII improved with PGRs application across the genotypes both under irrigation and water stress”
t0“wheat”
Claim · model-written summary
HD 2733 responded more positively to regulators than other genotypes under water stress.
- Taxon
- wheatTriticum aestivumt0
- Material
- HD 2733e0
- Treatment
- PGRs treatmente0
- Outcome
- responsee0
- Direction
- more positivee0
- Comparator
- other genotypese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The response of HD 2733 genotype was more positive toward PGRs treatment as compared to other genotypes under water stress.”
t0“wheat”
Claim · model-written summary
HD 2987 had higher photosynthetic rate and chlorophyll content under water stress, followed by C 306.
- Taxon
- wheatTriticum aestivumt0
- Material
- HD 2987e0
- Outcome
- PN and chlorophyll contentse0
- Direction
- Highere0
- Comparator
- C 306e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher PN and chlorophyll contents were observed in HD 2987 followed by C 306 genotype under water-stress conditions.”
t0“wheat”
Claim · model-written summary
Water stress lowered Rubisco small subunit expression relative to irrigation.
- Taxon
- wheatTriticum aestivume0
- Treatment
- water stresse0
- Gene
- Rubisco small subunit (SSU)e0
- Outcome
- Rubisco small subunit (SSU) expressione0
- Direction
- lowere0
- Comparator
- irrigated conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rubisco small subunit (SSU) expression was lower in wheat genotypes under water stress as compared to irrigated conditions.”
Claim · model-written summary
Regulator application upregulated SSU under water stress.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- PGRse0
- Gene
- SSUe0
- Outcome
- upregulation of SSUe0
- Direction
- upregulatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of PGRs led to upregulation of SSU under water stress”
t0“wheat”
Claim · model-written summary
Regulator treatments caused no significant change in Rubisco level or activity under irrigation.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- PGRs treatmentse0
- Outcome
- Rubisco level and activitye0
- Direction
- no significant changee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no significant change was found in Rubisco level and activity under irrigated condition in dependence on PGRs treatments”
t0“wheat”
Claim · model-written summary
Water stress significantly reduced yield-related traits.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- water-stress conditionse0
- Outcome
- Yield-related traitse0
- Direction
- reductione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield-related traits showed also significant reduction under water-stress conditions”
t0“wheat”
Claim · model-written summary
Regulator application enhanced yield and yield components.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- PGRse0
- Outcome
- yield and its componentse0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of PGRs enhanced the yield and its components”
t0“wheat”
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See all 18 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.