Abstract
A field experiment was carried out to evaluate the responses of six oil sunflower (Helianthus annuus L) genotypes namely; Sakha 53, H(A9XRf6), B11, B12, H(A9XRf8) and B20 to drought stress. Plants were subjected to three levels of water: adequate (control), moderate drought and severe drought Water regime was started directly post anthesis by withholding water during seed-filling stage until complete maturity of seeds. Moderate and severe drought decreased plant height and stem diameter of all genotypes, except B11 and B20 which recorded non-significant decrease in plant height under moderate drought. On the other hand, non-significant effect was observed in leaf area in all genotypes except B12 and H(A9XRf8) where a significant decrease was recorded only under severe drought. Yield components (head diameter, seed yield, 100 seed weight, seed husk %, seed kernel %, and oil percentage) responded to drought stress differently according to genotypes. Significant decreases were observed in floral head diameter seed yield, oil percentage and protein content in all genotypes except for the non-significant reduction in seed yield and oil content in Sakha53 and H(A9XRf6) under moderate drought Generally, Skha53 was the most drought-tolerant genotype whereas B11, B12 and B20 exhibited the least tolerance.
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Claims 9
Claim · model-written summary
Moderate and severe drought decreased plant height and stem diameter of sunflower genotypes relative to adequate water.
- Taxon
- Helianthus annuus L
Helianthus annuust0 - Treatment
- Moderate and severe droughte1
- Outcome
- plant height and stem diametere1
- Direction
- decreasede1
- Comparator
- adequate (control)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Six Oil Sunflower (Helianthus annuus L) Genotypes”
e0“three levels of water: adequate (control), moderate drought and severe drought”
e1“Moderate and severe drought decreased plant height and stem diameter of all genotypes”
Claim · model-written summary
Leaf area showed a non-significant drought effect in all genotypes except B12 and H(A9XRf8).
- Taxon
- Helianthus annuus LHelianthus annuust0
- Treatment
- droughte2
- Outcome
- leaf areae2
- Direction
- non-significant effecte2
- Comparator
- adequate (control)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Six Oil Sunflower (Helianthus annuus L) Genotypes”
e0“three levels of water: adequate (control), moderate drought and severe drought”
e2“non-significant effect was observed in leaf area in all genotypes except B12 and H(A9XRf8) where a significant decrease was recorded only under severe drought”
Claim · model-written summary
Leaf area of B12 and H(A9XRf8) decreased significantly under severe drought.
- Taxon
- Helianthus annuus LHelianthus annuust0
- Material
- B12 and H(A9XRf8)e2
- Treatment
- severe droughte2
- Outcome
- leaf areae2
- Direction
- decreasee2
- Comparator
- adequate (control)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Six Oil Sunflower (Helianthus annuus L) Genotypes”
e0“three levels of water: adequate (control), moderate drought and severe drought”
e2“non-significant effect was observed in leaf area in all genotypes except B12 and H(A9XRf8) where a significant decrease was recorded only under severe drought”
Claim · model-written summary
Floral head diameter, seed yield and oil percentage decreased under moderate drought in all genotypes, except for non-significant reductions in some genotypes.
- Taxon
- Helianthus annuus LHelianthus annuust0
- Treatment
- moderate droughte3
- Outcome
- floral head diameter seed yield, oil percentagee3
- Direction
- decreasese3
- Comparator
- adequate (control)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Six Oil Sunflower (Helianthus annuus L) Genotypes”
e0“three levels of water: adequate (control), moderate drought and severe drought”
e3“Significant decreases were observed in floral head diameter seed yield, oil percentage and protein content in all genotypes except for the non-significant reduction in seed yield and oil content in Sakha53 and H(A9XRf6) under moderate drought”
Claim · model-written summary
Protein content decreased significantly under moderate drought in sunflower genotypes.
- Taxon
- Helianthus annuus LHelianthus annuust0
- Treatment
- moderate droughte3
- Outcome
- protein contente3
- Direction
- decreasese3
- Comparator
- adequate (control)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Six Oil Sunflower (Helianthus annuus L) Genotypes”
e0“three levels of water: adequate (control), moderate drought and severe drought”
e3“Significant decreases were observed in floral head diameter seed yield, oil percentage and protein content in all genotypes except for the non-significant reduction in seed yield and oil content in Sakha53 and H(A9XRf6) under moderate drought”
Claim · model-written summary
Seed yield and oil content showed a non-significant reduction in Sakha53 and H(A9XRf6) under moderate drought.
- Taxon
- Helianthus annuus LHelianthus annuust0
- Material
- Sakha53 and H(A9XRf6)e3
- Treatment
- moderate droughte3
- Outcome
- seed yield and oil contente3
- Direction
- non-significant reductione3
- Comparator
- adequate (control)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Six Oil Sunflower (Helianthus annuus L) Genotypes”
e0“three levels of water: adequate (control), moderate drought and severe drought”
e3“Significant decreases were observed in floral head diameter seed yield, oil percentage and protein content in all genotypes except for the non-significant reduction in seed yield and oil content in Sakha53 and H(A9XRf6) under moderate drought”
Claim · model-written summary
Skha53 was the most drought-tolerant genotype among the six tested.
- Taxon
- Helianthus annuus LHelianthus annuust0
- Material
- Skha53e4
- Outcome
- drought-tolerant genotypee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Six Oil Sunflower (Helianthus annuus L) Genotypes”
e4“Generally, Skha53 was the most drought-tolerant genotype”
Claim · model-written summary
B11, B12 and B20 exhibited the least drought tolerance.
- Taxon
- Helianthus annuus LHelianthus annuust0
- Material
- B11, B12 and B20e5
- Outcome
- tolerancee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Six Oil Sunflower (Helianthus annuus L) Genotypes”
e5“whereas B11, B12 and B20 exhibited the least tolerance”
Claim · model-written summary
Yield components responded to drought stress differently among sunflower genotypes.
- Taxon
- Helianthus annuus LHelianthus annuust0
- Treatment
- drought stresse6
- Outcome
- Yield componentse6
- Direction
- differentlye6
- Comparator
- adequate (control)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Six Oil Sunflower (Helianthus annuus L) Genotypes”
e0“three levels of water: adequate (control), moderate drought and severe drought”
e6“Yield components (head diameter, seed yield, 100 seed weight, seed husk %, seed kernel %, and oil percentage) responded to drought stress differently according to genotypes”
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See all 59 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.