Abstract
High temperature stress is a major environmental factor influencing processes such as growth, yield and quality of crops. The objective of this study was to assess the effect of heat stress, applied during grain-filling, on seed yield- and oil quality components in high- and mid-oleic sunflower hybrids. Genotypes were exposed to a temperature range of 24/36 °C (night/day) for 10 consecutive days starting at 15 days after flowering. Heat treatment altered all measured traits; however, genotypes differed in their sensitivity to temperature. Head diameter and the sterile area of the head increased, but number of filled seeds per head and seed weight were reduced. HO 4 showed an increase in grain yield, but showed the largest decrease in oil content. The average oil concentration was significantly reduced by 6%. Concentrations of palmitic, stearic and oleic acids were increased, whereas linoleic acid was reduced. Stable genotypes, that were least responsive to heat stress, were identified for seed yield (MO genotypes 6, 8 and 12), oil concentration (MO genotypes 8 and 10), and oleic and linoleic acid concentration (HO genotype 4 and MO genotype 11). No single genotype was stable for all traits.
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Claims 12
Claim · model-written summary
Heat treatment altered all measured traits of the sunflower hybrids.
- Taxon
- sunflower
Helianthus annuust0 - Treatment
- heat stresse0
- Outcome
- all measured traitse1
- Direction
- alterede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of heat stress on seed yield components and oil composition in high- and mid-oleic sunflower hybrids”
e0“to assess the effect of heat stress, applied during grain-filling”
e1“Heat treatment altered all measured traits”
Claim · model-written summary
Genotypes differed in their sensitivity to temperature.
- Taxon
- sunflowerHelianthus annuust0
- Outcome
- sensitivity to temperaturee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of heat stress on seed yield components and oil composition in high- and mid-oleic sunflower hybrids”
e2“genotypes differed in their sensitivity to temperature”
Claim · model-written summary
Head diameter and the sterile area of the head increased under heat stress.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- heat stresse0
- Outcome
- Head diameter and the sterile area of the heade3
- Direction
- increasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of heat stress on seed yield components and oil composition in high- and mid-oleic sunflower hybrids”
e0“to assess the effect of heat stress, applied during grain-filling”
e3“Head diameter and the sterile area of the head increased, but number of filled seeds per head and seed weight were reduced”
Claim · model-written summary
Number of filled seeds per head and seed weight were reduced under heat stress.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- heat stresse0
- Outcome
- number of filled seeds per head and seed weighte3
- Direction
- reducede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of heat stress on seed yield components and oil composition in high- and mid-oleic sunflower hybrids”
e0“to assess the effect of heat stress, applied during grain-filling”
e3“Head diameter and the sterile area of the head increased, but number of filled seeds per head and seed weight were reduced”
Claim · model-written summary
HO 4 showed an increase in grain yield under heat stress.
- Taxon
- sunflowerHelianthus annuust0
- Material
- HO 4e4
- Treatment
- heat stresse0
- Outcome
- grain yielde4
- Direction
- an increasee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of heat stress on seed yield components and oil composition in high- and mid-oleic sunflower hybrids”
e0“to assess the effect of heat stress, applied during grain-filling”
e4“HO 4 showed an increase in grain yield, but showed the largest decrease in oil content”
Claim · model-written summary
HO 4 showed the largest decrease in oil content under heat stress.
- Taxon
- sunflowerHelianthus annuust0
- Material
- HO 4e4
- Treatment
- heat stresse0
- Outcome
- oil contente4
- Direction
- largest decreasee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of heat stress on seed yield components and oil composition in high- and mid-oleic sunflower hybrids”
e0“to assess the effect of heat stress, applied during grain-filling”
e4“HO 4 showed an increase in grain yield, but showed the largest decrease in oil content”
Claim · model-written summary
Average oil concentration was significantly reduced by 6% under heat stress.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- heat stresse0
- Outcome
- oil concentratione5
- Direction
- reducede5
- Value
- 6%e5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of heat stress on seed yield components and oil composition in high- and mid-oleic sunflower hybrids”
e0“to assess the effect of heat stress, applied during grain-filling”
e5“The average oil concentration was significantly reduced by 6%”
Claim · model-written summary
Concentrations of palmitic, stearic and oleic acids increased under heat stress.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- heat stresse0
- Outcome
- Concentrations of palmitic, stearic and oleic acidse6
- Direction
- increasede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of heat stress on seed yield components and oil composition in high- and mid-oleic sunflower hybrids”
e0“to assess the effect of heat stress, applied during grain-filling”
e6“Concentrations of palmitic, stearic and oleic acids were increased, whereas linoleic acid was reduced”
Claim · model-written summary
Linoleic acid concentration was reduced under heat stress.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- heat stresse0
- Outcome
- linoleic acide6
- Direction
- reducede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of heat stress on seed yield components and oil composition in high- and mid-oleic sunflower hybrids”
e0“to assess the effect of heat stress, applied during grain-filling”
e6“Concentrations of palmitic, stearic and oleic acids were increased, whereas linoleic acid was reduced”
Claim · model-written summary
MO genotypes 6, 8 and 12 were stable for seed yield under heat stress.
- Taxon
- sunflowerHelianthus annuust0
- Material
- MO genotypes 6, 8 and 12e7
- Outcome
- seed yielde7
- Qualifier
- least responsive to heat stresse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of heat stress on seed yield components and oil composition in high- and mid-oleic sunflower hybrids”
e7“Stable genotypes, that were least responsive to heat stress, were identified for seed yield (MO genotypes 6, 8 and 12)”
Claim · model-written summary
MO genotypes 8 and 10 were stable for oil concentration under heat stress.
- Taxon
- sunflowerHelianthus annuust0
- Material
- MO genotypes 8 and 10e7
- Outcome
- oil concentratione7
- Qualifier
- least responsive to heat stresse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of heat stress on seed yield components and oil composition in high- and mid-oleic sunflower hybrids”
e7“Stable genotypes, that were least responsive to heat stress, were identified for seed yield (MO genotypes 6, 8 and 12), oil concentration (MO genotypes 8 and 10)”
Claim · model-written summary
No single sunflower genotype was stable for all measured traits.
- Taxon
- sunflowerHelianthus annuust0
- Outcome
- stable for all traitse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of heat stress on seed yield components and oil composition in high- and mid-oleic sunflower hybrids”
e7“No single genotype was stable for all traits”
The same questions in other papers
heat · yield · Helianthus annuus (common sunflower)Positive and negative results
1 in the opposite direction
- negative
heat · quality: oil · Helianthus annuus (common sunflower)Positive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
- negative
- positive
- positive
1 paper more in this group
See all 5 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.