Abstract
Field-applied salicylic acid (SA) could provide a potential protection against drought stress in onion large-scale production. Two-season field experiments were consecutively conducted in 2013/2014 and 2014/2015 to study the effect of 1 and 2 mM SA on growth, yield, plant water relations, chlorophyll a fluorescence, osmoprotectants, and water-use efficiency (WUE) in onion plants under four levels of irrigation (I120 = 120%, I100 = 100%, I80 = 80%, and I60 = 60% of crop evapotranspiration). Foliar application of SA enhanced drought stress tolerance in onion plants by improving photosynthetic efficiency and plant water status as evaluated by membrane stability index and relative water content. These results were positively reflected by improving plant growth, productivity, and WUE under drought stress conditions. Therefore, SA application may, in future, find application as a potential growth regulator for improving plant growth and yield under deficit irrigation by 20–40%.
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Claims 7
Claim · model-written summary
Foliar salicylic acid improved photosynthetic efficiency in drought-stressed onion plants.
- Taxon
- onion plants
Allium cepae0 - Treatment
- Foliar application of SAe0
- Outcome
- photosynthetic efficiencye0
- Direction
- improvinge0
- Qualifier
- drought stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar application of SA enhanced drought stress tolerance in onion plants by improving photosynthetic efficiency and plant water status as evaluated by membrane stability index and relative water content.”
Claim · model-written summary
Foliar salicylic acid improved onion membrane stability index under drought stress.
- Taxon
- onion plantsAllium cepae0
- Treatment
- Foliar application of SAe0
- Outcome
- membrane stability indexe0
- Direction
- improvinge0
- Qualifier
- drought stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar application of SA enhanced drought stress tolerance in onion plants by improving photosynthetic efficiency and plant water status as evaluated by membrane stability index and relative water content.”
Claim · model-written summary
Foliar salicylic acid improved relative water content in onion under drought stress.
- Taxon
- onion plantsAllium cepae0
- Treatment
- Foliar application of SAe0
- Outcome
- relative water contente0
- Direction
- improvinge0
- Qualifier
- drought stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar application of SA enhanced drought stress tolerance in onion plants by improving photosynthetic efficiency and plant water status as evaluated by membrane stability index and relative water content.”
Claim · model-written summary
Salicylic acid improved onion growth under drought stress.
- Taxon
- onion plantsAllium cepat0
- Treatment
- Foliar application of SAe1
- Outcome
- plant growthe0
- Direction
- improvinge0
- Qualifier
- under drought stress conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion plants”
e0“These results were positively reflected by improving plant growth, productivity, and WUE under drought stress conditions.”
e1“Foliar application of SA enhanced drought stress tolerance in onion plants”
Claim · model-written summary
Salicylic acid improved onion productivity under drought stress.
- Taxon
- onion plantsAllium cepat0
- Treatment
- Foliar application of SAe1
- Outcome
- productivitye0
- Direction
- improvinge0
- Qualifier
- under drought stress conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion plants”
e0“These results were positively reflected by improving plant growth, productivity, and WUE under drought stress conditions.”
e1“Foliar application of SA enhanced drought stress tolerance in onion plants”
Claim · model-written summary
Salicylic acid improved onion water-use efficiency under drought stress.
- Taxon
- onion plantsAllium cepat0
- Treatment
- Foliar application of SAe1
- Outcome
- WUEe0
- Direction
- improvinge0
- Qualifier
- under drought stress conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion plants”
e0“These results were positively reflected by improving plant growth, productivity, and WUE under drought stress conditions.”
e1“Foliar application of SA enhanced drought stress tolerance in onion plants”
Claim · model-written summary
The authors propose salicylic acid as a growth regulator to improve onion growth and yield under 20–40% deficit irrigation.
- Taxon
- onion plantsAllium cepat0
- Treatment
- SA applicatione0
- Outcome
- improving plant growth and yielde0
- Qualifier
- under deficit irrigation by 20–40%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“onion plants”
e0“SA application may, in future, find application as a potential growth regulator for improving plant growth and yield under deficit irrigation by 20–40%.”
The same questions in other papers
salicylic acid · growth · Allium cepa (onion)Results differ
18 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
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See all 21 papers →salicylic acid · physiology: photosynthesis · Allium cepa (onion)Results agree
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salicylic acid · yield · Allium cepa (onion)Results agree
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See all 13 papers →application · growth · Allium cepa (onion)Positive and negative results
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See all 74 papers →application · yield · Allium cepa (onion)Positive and negative results
120 papers in the same direction as this paper · 10 in the opposite direction
- no effect
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See all 131 papers →application · physiology: photosynthesis · Allium cepa (onion)Results agree
1 paper in the same direction as this paper
- positive
application · physiology: water · Allium cepa (onion)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
application · physiology: oxidative · Allium cepa (onion)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.