Abstract
Crops are facing heat stress because of rapid climate change caused by global warming. We examined these issues in sunflower by exposing the plants growing with mean maximum temperature of 32.2oC (sowing to flowering) and 36.1oC (flowering to harvest) at normal temperature (S1) and 35.3oC (sowing to flowering) and 38.3 oC (flowering to harvest) at high temperatures (S2) by staggered sowings. Antioxidative responses of sunflower were also explored by studying the Superoxide dismutase, Catalase, Peroxidises and Ascorbate peroxidise activities. A significant increase was observed in antioxidant enzyme activities under high temperature stress. The final oil composition proved to be sensitive to the timing of heat stress and reduced (13%) by high temperatures. Some innovative steps should be taken on an emergency basis to prepare plants for such stressful conditions.
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Claims 2
Claim · model-written summary
High temperature significantly increased sunflower antioxidant enzyme activities.
- Taxon
- Sunflower
Helianthus annuust0 - Treatment
- high temperature stresse0
- Outcome
- antioxidant enzyme activitiese0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A significant increase was observed in antioxidant enzyme activities under high temperature stress.”
t0“Sunflower”
Claim · model-written summary
High temperatures reduced final sunflower oil composition by 13%.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- high temperaturese0
- Outcome
- final oil compositione0
- Direction
- reducede0
- Value
- 13%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The final oil composition proved to be sensitive to the timing of heat stress and reduced (13%) by high temperatures.”
t0“Sunflower”
The same questions in other papers
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 →heat · soil: biology · Helianthus annuus (common sunflower)Results agree
1 paper in the same direction as this paper
- 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.