Abstract
Globally, around 800 million hectares are affected by salinity. This abiotic stress causes plant growth inhibition, disruptions in physiological processes in plant cells, and yield losses in many crops. Sunflower is the third-most oilseed crop globally produced, and it is considered moderately tolerant to salinity. There are few studies about the genotypic variability existing in sunflower for responses to salinity, especially the changes in yield and oil content and quality under salinity. The present work aimed to study the effects of salinity on achene yield in four sunflower genotypes and their components and on the oil content and quality and their relationships. Four sunflower hybrids (ACA885, TRITON MAX, SRM769 and SRM779) were grown at 130 mM NaCl irrigation solution under controlled environmental conditions. The achene yield, the yield components, and the content and oil quality were determined. Based on the four studied genotypes, salinity decreased achene yield by 75.1 %. SRM779CL had a lower achene yield reduction by salinity. Yield component that most explained this tolerance was the number of achenes per plant. SRM779CL was the hybrid with the highest oil percentage loss. Contrarily, salinity increased the oil content in ACA885. Salinity decreased the ratio between oleic (18:1) and linoleic acid (18:2) in all genotypes. Therefore, salt stress increased the percentage of unsaturations in the four genotypes examined in this work. Finally, considering the 12 parameters measured, principal components analysis could determine that SRM779CL showed the best performance under control conditions while ACA885 was the most tolerant under salinity.
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Claims 9
Claim · model-written summary
Salinity decreased sunflower achene yield by 75.1%.
- Taxon
- sunflower
Helianthus annuust0 - Treatment
- salinitye0
- Outcome
- achene yielde0
- Direction
- decreasede0
- Value
- 75.1 %e0
- Comparator
- controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Based on the four studied genotypes, salinity decreased achene yield by 75.1 %.”
t0“four sunflower (Helianthus annuus L.) hybrids”
e2“under control conditions”
Claim · model-written summary
SRM779CL had a smaller salinity-related achene yield reduction.
- Taxon
- sunflowerHelianthus annuust0
- Material
- SRM779CLe0
- Treatment
- salinitye0
- Outcome
- achene yield reductione0
- Direction
- lowere0
- Comparator
- controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SRM779CL had a lower achene yield reduction by salinity.”
t0“four sunflower (Helianthus annuus L.) hybrids”
e2“under control conditions”
Claim · model-written summary
Achene number per plant explained the tolerance of SRM779CL.
- Taxon
- sunflowerHelianthus annuust0
- Outcome
- number of achenes per plante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield component that most explained this tolerance was the number of achenes per plant.”
t0“four sunflower (Helianthus annuus L.) hybrids”
Claim · model-written summary
SRM779CL had the highest oil percentage loss.
- Taxon
- sunflowerHelianthus annuust0
- Material
- SRM779CLe0
- Outcome
- oil percentage losse0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SRM779CL was the hybrid with the highest oil percentage loss.”
t0“four sunflower (Helianthus annuus L.) hybrids”
Claim · model-written summary
Salinity increased oil content in ACA885.
- Taxon
- sunflowerHelianthus annuust0
- Material
- ACA885e0
- Treatment
- salinitye0
- Outcome
- oil contente0
- Direction
- increasede0
- Comparator
- controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Contrarily, salinity increased the oil content in ACA885.”
t0“four sunflower (Helianthus annuus L.) hybrids”
e2“under control conditions”
Claim · model-written summary
Salinity decreased the oleic to linoleic acid ratio in all genotypes.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- Salinitye0
- Outcome
- ratio between oleic (18:1) and linoleic acid (18:2)e0
- Direction
- decreasede0
- Comparator
- controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity decreased the ratio between oleic (18:1) and linoleic acid (18:2) in all genotypes.”
t0“four sunflower (Helianthus annuus L.) hybrids”
e2“under control conditions”
Claim · model-written summary
Salt stress increased oil unsaturation percentage in the four genotypes.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- salt stresse0
- Outcome
- percentage of unsaturationse0
- Direction
- increasede0
- Comparator
- controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“salt stress increased the percentage of unsaturations in the four genotypes examined in this work.”
t0“four sunflower (Helianthus annuus L.) hybrids”
e2“under control conditions”
Claim · model-written summary
PCA identified SRM779CL as best under control conditions.
- Taxon
- sunflowerHelianthus annuust0
- Material
- SRM779CLe0
- Outcome
- best performancee0
- Comparator
- control conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SRM779CL showed the best performance under control conditions”
t0“four sunflower (Helianthus annuus L.) hybrids”
Claim · model-written summary
PCA identified ACA885 as most salinity tolerant.
- Taxon
- sunflowerHelianthus annuust0
- Material
- ACA885e0
- Treatment
- salinitye0
- Outcome
- most tolerante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ACA885 was the most tolerant under salinity”
t0“four sunflower (Helianthus annuus L.) hybrids”
The same questions in other papers
salinity · quality: oil · Helianthus annuus (common sunflower)Results differ
7 in the opposite direction
- no effect
- negative
- negative
4 papers more in this group
See all 8 papers →salinity · yield · Helianthus annuus (common sunflower)Results differ
1 paper in the same direction as this paper · 22 in the opposite direction
- no effect
- negative
- negative
20 papers more in this group
See all 24 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.