Abstract
Water and salinity stresses are the major environmental concerns limiting crop production, particularly in arid and semi-arid ecologies. Focused research is required to develop mitigating strategies to manage such stresses. Application of plant-bioregulators (PBRs) may be an effective option to manage water and salinity stresses. Therefore, a field experiment was conducted during 2016–17 and 2017–18 at semi-arid saline site of NW (north-western) India to assess the effectiveness of salicylic acid and thiourea in easing out the adverse effect of variable water deficit and irrigation water salinity regimes. Increasing water deficit and its salinity significantly (P<0.001) reduced all the studied growth parameters, viz. plant height, crop stand, no. of tillers, leaf area index and relative growth rate; and yield attributes like no. of effective tillers, spike length, grains/spike, grain weight/spike, 1000-grain weight, specific weight. Application of either salicylic acid or thiourea significantly improved growth parameters in comparison to control and thiourea proved more effective. Thiourea application improved grain yield by 3.96 and 17.36%, biological yield by 4.21 and 14.82%, effective no. of tillers by 3.77 and 11.91%, weight/spike by 2.83 and 15.17%, 1000-grain weight by 3.72 and 12.66% and specific weight by 2.04 and 8.84% compared to salicylic acid and control, respectively. This might be due to better nutrient uptake, water relations, enhanced CO2 fixation and effective partitioning of assimilates. Thus, thiourea and salicylic acid application in wheat found better as compared to control under saline water stress.
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Claims 10
Claim · model-written summary
Greater water deficit and salinity significantly reduced wheat growth parameters.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- Increasing water deficit and its salinitye0
- Outcome
- plant height, crop stand, no. of tillers, leaf area index and relative growth ratee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing water deficit and its salinity significantly (P<0.001) reduced all the studied growth parameters, viz. plant height, crop stand, no. of tillers, leaf area index and relative growth rate”
t0“wheat (Triticum aestivum)”
Claim · model-written summary
Greater water deficit and salinity significantly reduced wheat yield attributes.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Increasing water deficit and its salinitye1
- Outcome
- effective tillers, spike length, grains/spike, grain weight/spike, 1000-grain weight, specific weighte0
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“and yield attributes like no. of effective tillers, spike length, grains/spike, grain weight/spike, 1000-grain weight, specific weight”
e1“Increasing water deficit and its salinity significantly (P<0.001) reduced all the studied growth parameters”
t0“wheat (Triticum aestivum)”
Claim · model-written summary
Both salicylic acid and thiourea significantly improved wheat growth relative to control, with thiourea more effective.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- salicylic acid or thioureae0
- Outcome
- growth parameterse0
- Direction
- improvede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of either salicylic acid or thiourea significantly improved growth parameters in comparison to control and thiourea proved more effective”
t0“wheat (Triticum aestivum)”
Claim · model-written summary
Thiourea improved wheat grain yield relative to salicylic acid and control.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Thioureae0
- Outcome
- grain yielde0
- Direction
- improvede0
- Value
- 3.96 and 17.36%e0
- Comparator
- salicylic acid and controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Thiourea application improved grain yield by 3.96 and 17.36%”
e1“compared to salicylic acid and control, respectively”
t0“wheat (Triticum aestivum)”
Claim · model-written summary
Thiourea improved wheat biological yield relative to salicylic acid and control.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Thioureae1
- Outcome
- biological yielde0
- Direction
- improvede1
- Value
- 4.21 and 14.82%e0
- Comparator
- salicylic acid and controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“biological yield by 4.21 and 14.82%”
e1“Thiourea application improved grain yield”
e2“compared to salicylic acid and control, respectively”
t0“wheat (Triticum aestivum)”
Claim · model-written summary
Thiourea improved effective tiller number relative to salicylic acid and control.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Thioureae1
- Outcome
- effective no. of tillerse0
- Direction
- improvede1
- Value
- 3.77 and 11.91%e0
- Comparator
- salicylic acid and controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“effective no. of tillers by 3.77 and 11.91%”
e1“Thiourea application improved grain yield”
e2“compared to salicylic acid and control, respectively”
t0“wheat (Triticum aestivum)”
Claim · model-written summary
Thiourea improved wheat spike weight relative to salicylic acid and control.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Thioureae1
- Outcome
- weight/spikee0
- Direction
- improvede1
- Value
- 2.83 and 15.17%e0
- Comparator
- salicylic acid and controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“weight/spike by 2.83 and 15.17%”
e1“Thiourea application improved grain yield”
e2“compared to salicylic acid and control, respectively”
t0“wheat (Triticum aestivum)”
Claim · model-written summary
Thiourea improved wheat thousand-grain weight relative to salicylic acid and control.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Thioureae1
- Outcome
- 1000-grain weighte0
- Direction
- improvede1
- Value
- 3.72 and 12.66%e0
- Comparator
- salicylic acid and controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1000-grain weight by 3.72 and 12.66%”
e1“Thiourea application improved grain yield”
e2“compared to salicylic acid and control, respectively”
t0“wheat (Triticum aestivum)”
Claim · model-written summary
Thiourea improved wheat specific weight relative to salicylic acid and control.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Thioureae1
- Outcome
- specific weighte0
- Direction
- improvede1
- Value
- 2.04 and 8.84%e0
- Comparator
- salicylic acid and controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“specific weight by 2.04 and 8.84%”
e1“Thiourea application improved grain yield”
e2“compared to salicylic acid and control, respectively”
t0“wheat (Triticum aestivum)”
Claim · model-written summary
Thiourea and salicylic acid were recommended over control for wheat under saline water stress.
- Taxon
- wheatTriticum aestivume0
- Treatment
- thiourea and salicylic acid applicatione0
- Outcome
- better as compared to controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“thiourea and salicylic acid application in wheat found better as compared to control under saline water stress”
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