Abstract
Although salt stress is a worldwide agricultural and eco-environmental problem and many PGRs have been tried to combat the salinity effects but limited information is available on the impact of salicylic acid in sorghum under salt stress. To assess the impact, seeds of sorghum varieties (HJ 513 and HJ 541) were grown with four different salt levels (0, 5.0, 7.5 and 10.0 dS m-1) and foliar spray of three salicylic acids (0, 25 and 50 ppm) levels with twelve differeLimited water availability hampers the sustainability of crop production. Assessment of the physiological parameters i.e. increase in MDA and H2O2 content from 0.115 to 0.260 µmole g-1 DW and 29.87 to 66.00 nmole g-1 DW, respectively and declining trend was observed in total chlorophyll content 3.16 to 2.02 mg g-1 DW, SPAD Value 43.61 to 25.19 and photochemical quantum yield (Fv/Fm) 0.736 to 0.651, respectively, in leaf samples at vegetative stage from control to 10 dS m-1 of salt stress. Overall yield attributes and yield i.e., panicle length, panicle weight, seed yield plant-1, 100 seed weight and harvest index reduced significantly under salt stress. Furthermore, seed yield plant-1 ranged from 13.2 to 9.7 g in HJ 513 and 11.9 to 8.7 g in HJ 541 from control to 10 dS m-1 of salt stress. Foliar application of salicylic acid @ 50 ppm significantly influenced the physiological performance of sorghum over control and 25 ppm. Seed yield plant-1 increased by 9.8 % after application of 50 ppm SA under salt stress (10 dS m-1) over control. Thus SA may be an alternative to ameliorate the adverse effect of salt stress on sorghum crop.
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Claims 11
Claim · model-written summary
At 10 dS m-1 salt stress, leaf MDA content increased from 0.115 to 0.260 µmole g-1 DW.
- Organ / stage
- leaf samples at vegetative stagee1
- Treatment
- salt stresse1
- Outcome
- MDAe0
- Direction
- increasee0
- Value
- 0.115 to 0.260 µmole g-1 DWe0
- Comparator
- controle1
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increase in MDA and H2O2 content from 0.115 to 0.260 µmole g-1 DW and 29.87 to 66.00 nmole g-1 DW, respectively”
e1“in leaf samples at vegetative stage from control to 10 dS m-1 of salt stress”
t0“sorghum (Sorghum bicolor L.)”
Claim · model-written summary
At 10 dS m-1 salt stress, leaf H2O2 content increased from 29.87 to 66.00 nmole g-1 DW.
- Organ / stage
- leaf samples at vegetative stagee1
- Treatment
- 10 dS m-1 of salt stresse1
- Outcome
- H2O2 contente0
- Direction
- increasee0
- Value
- 29.87 to 66.00 nmole g-1 DWe0
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increase in MDA and H2O2 content from 0.115 to 0.260 µmole g-1 DW and 29.87 to 66.00 nmole g-1 DW, respectively”
e1“in leaf samples at vegetative stage from control to 10 dS m-1 of salt stress”
t0“sorghum (Sorghum bicolor L.)”
Claim · model-written summary
Leaf total chlorophyll content declined from 3.16 to 2.02 mg g-1 DW under 10 dS m-1 salt stress.
- Treatment
- 10 dS m-1 of salt stresse1
- Outcome
- total chlorophyll contente0
- Direction
- declininge0
- Value
- 3.16 to 2.02 mg g-1 DWe0
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“declining trend was observed in total chlorophyll content 3.16 to 2.02 mg g-1 DW”
e1“in leaf samples at vegetative stage from control to 10 dS m-1 of salt stress”
t0“sorghum (Sorghum bicolor L.)”
Claim · model-written summary
Leaf SPAD value declined from 43.61 to 25.19 under 10 dS m-1 salt stress.
- Treatment
- 10 dS m-1 of salt stresse1
- Outcome
- SPAD Valuee0
- Direction
- declininge0
- Value
- 43.61 to 25.19e0
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“declining trend was observed in total chlorophyll content 3.16 to 2.02 mg g-1 DW, SPAD Value 43.61 to 25.19”
e1“in leaf samples at vegetative stage from control to 10 dS m-1 of salt stress”
t0“sorghum (Sorghum bicolor L.)”
Claim · model-written summary
Leaf photochemical quantum yield declined from 0.736 to 0.651 under 10 dS m-1 salt stress.
- Treatment
- 10 dS m-1 of salt stresse1
- Outcome
- photochemical quantum yield (Fv/Fm)e0
- Direction
- declininge0
- Value
- 0.736 to 0.651e0
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“declining trend was observed in total chlorophyll content 3.16 to 2.02 mg g-1 DW, SPAD Value 43.61 to 25.19 and photochemical quantum yield (Fv/Fm) 0.736 to 0.651”
e1“in leaf samples at vegetative stage from control to 10 dS m-1 of salt stress”
t0“sorghum (Sorghum bicolor L.)”
Claim · model-written summary
Salt stress significantly reduced panicle length, panicle weight, seed yield, 100 seed weight and harvest index.
- Treatment
- salt stresse0
- Outcome
- panicle length, panicle weight, seed yield plant-1, 100 seed weight and harvest indexe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“panicle length, panicle weight, seed yield plant-1, 100 seed weight and harvest index reduced significantly under salt stress”
t0“sorghum (Sorghum bicolor L.)”
Claim · model-written summary
Salt stress reduced seed yield per plant in HJ 513 from 13.2 to 9.7 g.
- Material
- HJ 513e0
- Treatment
- 10 dS m-1 of salt stresse0
- Outcome
- seed yield plant-1e0
- Direction
- reducede1
- Value
- 13.2 to 9.7 ge0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed yield plant-1 ranged from 13.2 to 9.7 g in HJ 513 and 11.9 to 8.7 g in HJ 541 from control to 10 dS m-1 of salt stress”
e1“seed yield plant-1, 100 seed weight and harvest index reduced significantly under salt stress”
t0“sorghum (Sorghum bicolor L.)”
Claim · model-written summary
Salt stress reduced seed yield per plant in HJ 541 from 11.9 to 8.7 g.
- Material
- HJ 541e0
- Treatment
- 10 dS m-1 of salt stresse0
- Outcome
- seed yield plant-1e0
- Direction
- reducede1
- Value
- 11.9 to 8.7 ge0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed yield plant-1 ranged from 13.2 to 9.7 g in HJ 513 and 11.9 to 8.7 g in HJ 541 from control to 10 dS m-1 of salt stress”
e1“seed yield plant-1, 100 seed weight and harvest index reduced significantly under salt stress”
t0“sorghum (Sorghum bicolor L.)”
Claim · model-written summary
Foliar salicylic acid at 50 ppm significantly influenced sorghum physiological performance compared with control and 25 ppm.
- Treatment
- Foliar application of salicylic acid @ 50 ppme0
- Outcome
- physiological performancee0
- Comparator
- control and 25 ppme0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar application of salicylic acid @ 50 ppm significantly influenced the physiological performance of sorghum over control and 25 ppm”
Claim · model-written summary
At 10 dS m-1 salt stress, 50 ppm salicylic acid increased seed yield per plant by 9.8% over control.
- Treatment
- 50 ppm SAe0
- Outcome
- Seed yield plant-1e0
- Direction
- increasede0
- Value
- 9.8 %e0
- Qualifier
- salt stress (10 dS m-1)e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed yield plant-1 increased by 9.8 % after application of 50 ppm SA under salt stress (10 dS m-1) over control”
t0“sorghum (Sorghum bicolor L.)”
Claim · model-written summary
The authors suggest salicylic acid as an alternative for alleviating salt stress in sorghum.
- Outcome
- SA may be an alternative to ameliorate the adverse effect of salt stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Thus SA may be an alternative to ameliorate the adverse effect of salt stress on sorghum crop”
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