Abstract
ABSTRACT- Heat stress causes flower and fruit abscission in pepper. This study was conducted in the greenhouses of Isfahan University of Technology to evaluate the effect of foliar application of Benzyl adenine (BA) and potassium silicate (K2SiO3) under heat stress condition on bell pepper. Two factorial experiments based on completely randomized design with four concentrations of BA (0, 0.06, 0.6 and 6 ppm) and the second with two levels of K2SiO3 (0 and 5 Mm) both in two temperature treatments (25±2 (optimum) 35±2 (high temperature)) with six replicates were conducted. The results of the study indicated that the use of BA (especially 6 ppm) promoted growth parameters and increased proline, phenol and antioxidant content. Also, application of BA 6 ppm improved cell membrane stability assessed via decreasing electrolyte leakage (EL) and also reduced flower abscission in bell pepper. BA at 6 ppm increased plant height, shoot and root dry weight, proline and total phenol, root fresh weight, potassium (K) concentration and decreased flower abscission. Antioxidant content increased with heat stress in all BA levels. Results of the study indicated that fresh and dry weight of root and K concentration increased with 5 mM K2SiO3. Moreover, root fresh weight and K concentration and antioxidant content increased in 5 mM K2SiO3 under heat stress.
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Claims 9
Claim · model-written summary
BA at 6 ppm increased plant height, shoot and root dry weight in bell pepper
- Taxon
- bell peppere1
- Treatment
- BA at 6 ppme2
- Outcome
- plant height, shoot and root dry weighte2
- Direction
- increasede2
Not reportedComparator
Verbatim
e1“on bell pepper”
e2“BA at 6 ppm increased plant height, shoot and root dry weight”
Claim · model-written summary
BA at 6 ppm increased proline and total phenol in bell pepper
Not reportedComparator
Verbatim
e1“on bell pepper”
e2“BA at 6 ppm increased plant height, shoot and root dry weight, proline and total phenol”
Claim · model-written summary
BA at 6 ppm increased root fresh weight and potassium concentration in bell pepper
- Taxon
- bell peppere1
- Treatment
- BA at 6 ppme3
- Outcome
- root fresh weight, potassium (K) concentratione3
- Direction
- increasede3
Not reportedComparator
Verbatim
e1“on bell pepper”
e3“BA at 6 ppm increased plant height, shoot and root dry weight, proline and total phenol, root fresh weight, potassium (K) concentration”
Claim · model-written summary
BA 6 ppm reduced flower abscission in bell pepper
Not reportedComparator
Verbatim
e1“on bell pepper”
e6“application of BA 6 ppm improved cell membrane stability assessed via decreasing electrolyte leakage (EL) and also reduced flower abscission in bell pepper”
Claim · model-written summary
BA 6 ppm improved cell membrane stability in bell pepper, assessed by electrolyte leakage
- Taxon
- bell peppere1
- Treatment
- BA 6 ppme6
- Outcome
- cell membrane stabilitye6
- Direction
- improvede6
- Qualifier
- decreasing electrolyte leakage (EL)e6
Not reportedComparator
Verbatim
e1“on bell pepper”
e6“application of BA 6 ppm improved cell membrane stability assessed via decreasing electrolyte leakage (EL) and also reduced flower abscission in bell pepper”
Claim · model-written summary
Heat stress increased antioxidant content in bell pepper at all BA levels
Not reportedComparator
Verbatim
e1“on bell pepper”
e7“Antioxidant content increased with heat stress in all BA levels”
Claim · model-written summary
BA, especially at 6 ppm, increased antioxidant content in bell pepper
Not reportedComparator
Verbatim
e1“on bell pepper”
e2“the use of BA (especially 6 ppm) promoted growth parameters and increased proline, phenol and antioxidant content”
Claim · model-written summary
Potassium silicate at 5 mM increased root fresh weight, root dry weight and potassium concentration in bell pepper
- Taxon
- bell peppere1
- Treatment
- 5 mM K2SiO3e2
- Outcome
- fresh and dry weight of root and K concentratione2
- Direction
- increasede2
Not reportedComparator
Verbatim
e1“on bell pepper”
e2“fresh and dry weight of root and K concentration increased with 5 mM K2SiO3”
Claim · model-written summary
Under heat stress, 5 mM potassium silicate increased root fresh weight, potassium concentration and antioxidant content in bell pepper
- Taxon
- bell peppere1
- Treatment
- 5 mM K2SiO3e2
- Outcome
- root fresh weight and K concentration and antioxidant contente2
- Direction
- increasede2
- Qualifier
- under heat stresse2
Not reportedComparator
Verbatim
e1“on bell pepper”
e2“root fresh weight and K concentration and antioxidant content increased in 5 mM K2SiO3 under heat stress”
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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.