Abstract
BACKGROUND: Salicylic acid (SA) is a potential endogenous plant hormone that plays an important role in plant growth and development. Since sunflower yield and its seed oil yield are adversely affected by salinity, in this study the role of SA in modulating salt (NaCl)-induced effects on various yield and oil characteristics of sunflower was investigated. For this purpose a greenhouse experiment comprising two sunflower hybrid lines (Hysun-33 and SF-187), two NaCl levels (0 and 120 mmol L(-1)) and four SA levels (0, 100, 200 and 300 mg L(-1)) was conducted. RESULTS: Salt stress markedly reduced yield, oil content, linoleic acid and δ-tocopherol in both sunflower lines, while it increased linolenic acid, palmitic acid, stearic acid and α- and γ-tocopherols. However, increasing levels of foliar-applied SA resulted in improved achene yield and hundred-achene weight in both lines. Foliar-applied SA caused a significant decrease in oil stearic acid and α- and γ-tocopherols in both lines under non-saline and saline conditions. CONCLUSION: Salt-induced harmful effects on achene yield and oil characteristics of sunflower could be alleviated by exogenous application of SA. High doses of SA caused a marked increase in sunflower achene oil content as well as some key fatty acids.
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Claims 8
Claim · model-written summary
Salt stress reduced achene yield, oil content and linoleic acid in sunflower.
- Taxon
- sunflower
Helianthus annuuse1 - Material
- Hysun-33 and SF-187e0
- Treatment
- Salt stresse1
- Outcome
- yield, oil content, linoleic acide1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two sunflower hybrid lines (Hysun-33 and SF-187)”
e1“Salt stress markedly reduced yield, oil content, linoleic acid and δ-tocopherol in both sunflower lines, while it increased linolenic acid, palmitic acid, stearic acid and α- and γ-tocopherols”
Claim · model-written summary
Salt stress reduced δ-tocopherol in sunflower oil.
- Taxon
- sunflowerHelianthus annuuse1
- Treatment
- Salt stresse1
- Outcome
- δ-tocopherole1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Salt stress markedly reduced yield, oil content, linoleic acid and δ-tocopherol in both sunflower lines, while it increased linolenic acid, palmitic acid, stearic acid and α- and γ-tocopherols”
Claim · model-written summary
Salt stress increased linolenic, palmitic and stearic acids in sunflower oil.
- Taxon
- sunflowerHelianthus annuuse1
- Treatment
- Salt stresse1
- Outcome
- linolenic acid, palmitic acid, stearic acide1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Salt stress markedly reduced yield, oil content, linoleic acid and δ-tocopherol in both sunflower lines, while it increased linolenic acid, palmitic acid, stearic acid and α- and γ-tocopherols”
Claim · model-written summary
Salt stress increased α- and γ-tocopherols in sunflower oil.
- Taxon
- sunflowerHelianthus annuuse1
- Treatment
- Salt stresse1
- Outcome
- α- and γ-tocopherolse1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Salt stress markedly reduced yield, oil content, linoleic acid and δ-tocopherol in both sunflower lines, while it increased linolenic acid, palmitic acid, stearic acid and α- and γ-tocopherols”
Claim · model-written summary
Foliar-applied salicylic acid improved achene yield and hundred-achene weight in both sunflower lines.
- Taxon
- sunflowerHelianthus annuuse1
- Treatment
- foliar-applied SAe2
- Outcome
- achene yield and hundred-achene weighte2
- Direction
- improvede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Salt stress markedly reduced yield, oil content, linoleic acid and δ-tocopherol in both sunflower lines, while it increased linolenic acid, palmitic acid, stearic acid and α- and γ-tocopherols”
e2“However, increasing levels of foliar-applied SA resulted in improved achene yield and hundred-achene weight in both lines”
Claim · model-written summary
Foliar-applied salicylic acid significantly decreased oil stearic acid and α- and γ-tocopherols under non-saline and saline conditions.
- Taxon
- sunflowerHelianthus annuuse1
- Treatment
- foliar-applied SAe3
- Outcome
- oil stearic acid and α- and γ-tocopherolse3
- Direction
- decreasee3
- Qualifier
- non-saline and saline conditionse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Salt stress markedly reduced yield, oil content, linoleic acid and δ-tocopherol in both sunflower lines, while it increased linolenic acid, palmitic acid, stearic acid and α- and γ-tocopherols”
e3“Foliar-applied SA caused a significant decrease in oil stearic acid and α- and γ-tocopherols in both lines under non-saline and saline conditions”
Claim · model-written summary
High doses of salicylic acid markedly increased achene oil content in sunflower.
- Taxon
- sunflowerHelianthus annuuse4
- Treatment
- High doses of SAe4
- Outcome
- achene oil contente4
- Direction
- increasee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“High doses of SA caused a marked increase in sunflower achene oil content as well as some key fatty acids”
Claim · model-written summary
Exogenous salicylic acid could alleviate the harmful effects of salt on sunflower achene yield and oil characteristics.
- Taxon
- sunflowerHelianthus annuuse5
- Treatment
- exogenous application of SAe5
- Outcome
- achene yield and oil characteristicse5
- Direction
- alleviatede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Salt-induced harmful effects on achene yield and oil characteristics of sunflower could be alleviated by exogenous application of SA”
The same questions in other papers
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151 papers in the same direction as this paper · 5 in the opposite direction · 1 reporting no difference from an alternative
- no effect
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See all 158 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.