Abstract
Core Ideas Deficit irrigation conditions decreased safflower seed and oil yield. Safflower cultivars demonstrated different reactions drought stress. Sina and Faraman cultivars had higher seed oil content across all irrigation treatments. Highest oil yield across all irrigation treatments was produced by Sina cultivar Harvest time deferment was associated with increased oil oxidation in all cultivars. Drought stress significantly declines crop yield. Efficient soil moisture management and its consequent effects on metabolic changes which happen in response to drought stress are important in dry regions agriculture. This research was performed to evaluate yield, yield components, and oil accumulation in safflower ( Carthamus tinctorius L.) cultivars seed in response to water deficit conditions. A field experiment was conducted at the Research Farm of the College of Agriculture, Tabriz University during two growing seasons of 2014 and 2015. The treatments were arranged as split plots based on randomized complete block design with three replicates. Irrigation treatments (irrigation after 70, 100, 130, and 160 mm evaporation from class A pan) were assigned to the main plots and spring safflower cultivars (Faraman, Goldasht, Sina, and Soffeh) were allocated to the subplots. Safflower seeds were harvested in 5‐d intervals at seven stages during development and maturity period. The result showed that Sina cultivar had the highest seed yield per unit area. Maximum oil percentage of safflower seeds was obtained at 1 to 12 d after plant physiological maturity. Water stress caused seed oil percentage decline across all cultivars. Sina and Faraman cultivars had higher oil percentage across all irrigation treatments. The highest oil and seed yield per unit area under both full and limited irrigation conditions was produced by Sina cultivar. Drought stress decreased seed yield, yield components, and oil content across all safflower cultivars, however, the extent of the damage was limited due to cultivar genetic characteristics and ecological origin.
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Claims 9
Claim · model-written summary
Sina had the highest seed yield per unit area.
Not reportedTaxon
Verbatim
e0“Sina cultivar had the highest seed yield per unit area.”
Claim · model-written summary
Seed oil percentage peaked 1 to 12 days after physiological maturity.
- Taxon
- safflower
Carthamus tinctoriuse0 - Organ / stage
- seedse0
- Outcome
- oil percentagee0
- Direction
- Maximume0
- Qualifier
- 1 to 12 d after plant physiological maturitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maximum oil percentage of safflower seeds was obtained at 1 to 12 d after plant physiological maturity.”
Claim · model-written summary
Water stress reduced seed oil percentage across cultivars.
Not reportedTaxonComparator
Verbatim
e0“Water stress caused seed oil percentage decline across all cultivars.”
Claim · model-written summary
Sina and Faraman had higher oil percentage across irrigation treatments.
- Material
- Sina and Faramane0
- Outcome
- oil percentagee0
- Direction
- highere0
- Qualifier
- all irrigation treatmentse0
Not reportedTaxon
Verbatim
e0“Sina and Faraman cultivars had higher oil percentage across all irrigation treatments.”
Claim · model-written summary
Sina had the highest oil yield under full and limited irrigation.
- Material
- Sinae0
- Outcome
- oil and seed yield per unit areae0
- Direction
- higheste0
- Qualifier
- both full and limited irrigation conditionse0
Not reportedTaxon
Verbatim
e0“The highest oil and seed yield per unit area under both full and limited irrigation conditions was produced by Sina cultivar.”
Claim · model-written summary
Sina had the highest seed yield under full and limited irrigation.
Not reportedTaxon
Verbatim
e0“The highest oil and seed yield per unit area under both full and limited irrigation conditions was produced by Sina cultivar.”
Claim · model-written summary
Drought reduced seed yield and yield components across cultivars.
- Taxon
- safflowerCarthamus tinctoriuse0
- Treatment
- Drought stresse0
- Outcome
- seed yield, yield componentse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought stress decreased seed yield, yield components, and oil content across all safflower cultivars”
Claim · model-written summary
Drought reduced oil content across cultivars.
- Taxon
- safflowerCarthamus tinctoriuse0
- Treatment
- Drought stresse0
- Outcome
- oil contente0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought stress decreased seed yield, yield components, and oil content across all safflower cultivars”
Claim · model-written summary
Later harvest was associated with increased oil oxidation in all cultivars.
Not reportedTaxon
Verbatim
e0“Harvest time deferment was associated with increased oil oxidation in all cultivars.”
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drought · quality: oil · Carthamus tinctorius (safflower)Results differ
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- negative
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See all 30 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.