Paper · 2011 · AFRICAN JOURNAL OF BIOTECHNOLOGY

Effects of drought stress and different densities on oil yield and biomass yield of sunflower varieties

Ahmad Afkari Bajehbaj

17
claims
34
verbatim quotes
9
citations
2
research areas
✓
Open access

Abstract

For evaluation of water deficit stress and planting density effects on the oil and biological yield attributes of sunflower, an experiment was conducted in a randomized complete block design (RCBD) based split plot factorial design in three replications in the research field of Baku State University, Baku, Azerbaijan, in 2009. The factors studied were irrigation (with 70, 140 and 210 mm water evaporation from the evaporation pan), planting densities (with 10, 20 and 30 plant/m 2 ) and four sunflower cultivars (airfloure, alestar, armawirski and Ismailli). The results showed that the application of water deficit stress decreased plant height, seed number per head, oil percentage, oil yield, biomass yield, seed yield, thousand seed weight and other related traits significantly. Means compression showed that the highest oil and grain yield, biological yield and the highest number of plant were achieved in 20 plant/m 2 . In water application after 70 mm evaporation from Class A pan, airfloure and alestar cultivars had the highest seed number per head and the least hollowness percent, while the maximum biological yield was seen in airfloure cultivar in the consumption of 20 plant/m 2 and water application after 210 mm evaporation from Class A pan. However, the highest seed yield was obtained at 20 cm density, and airfloure yielded higher than alestar cv.

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Claims 17

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Water deficit stress significantly decreased sunflower plant height.

Taxon
sunflowerHelianthus annuust0
Treatment
water deficit stresse0
Outcome
plant heighte0
Direction
decreasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

e0

“The results showed that the application of water deficit stress decreased plant height, seed number per head, oil percentage, oil yield, biomass yield, seed yield, thousand seed weight and other related traits significantly.”

✓ located verbatim in the source · abstract, characters 562–786 · show in text ↑
t0

“sunflower”

✓ located verbatim in the source · title, characters 84–93 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Water deficit stress significantly decreased sunflower seed number per head.

Taxon
sunflowerHelianthus annuust0
Treatment
water deficit stresse0
Outcome
seed number per heade0
Direction
decreasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

e0

“The results showed that the application of water deficit stress decreased plant height, seed number per head, oil percentage, oil yield, biomass yield, seed yield, thousand seed weight and other related traits significantly.”

✓ located verbatim in the source · abstract, characters 562–786 · show in text ↑
t0

“sunflower”

✓ located verbatim in the source · title, characters 84–93 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Water deficit stress significantly decreased sunflower oil percentage.

Taxon
sunflowerHelianthus annuust0
Treatment
water deficit stresse0
Outcome
oil percentagee0
Direction
decreasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

e0

“The results showed that the application of water deficit stress decreased plant height, seed number per head, oil percentage, oil yield, biomass yield, seed yield, thousand seed weight and other related traits significantly.”

✓ located verbatim in the source · abstract, characters 562–786 · show in text ↑
t0

“sunflower”

✓ located verbatim in the source · title, characters 84–93 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Water deficit stress significantly decreased sunflower oil yield.

Taxon
sunflowerHelianthus annuust0
Treatment
water deficit stresse0
Outcome
oil yielde0
Direction
decreasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

e0

“The results showed that the application of water deficit stress decreased plant height, seed number per head, oil percentage, oil yield, biomass yield, seed yield, thousand seed weight and other related traits significantly.”

✓ located verbatim in the source · abstract, characters 562–786 · show in text ↑
t0

“sunflower”

✓ located verbatim in the source · title, characters 84–93 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Water deficit stress significantly decreased sunflower biomass yield.

Taxon
sunflowerHelianthus annuust0
Treatment
water deficit stresse0
Outcome
biomass yielde0
Direction
decreasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

e0

“The results showed that the application of water deficit stress decreased plant height, seed number per head, oil percentage, oil yield, biomass yield, seed yield, thousand seed weight and other related traits significantly.”

✓ located verbatim in the source · abstract, characters 562–786 · show in text ↑
t0

“sunflower”

✓ located verbatim in the source · title, characters 84–93 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Water deficit stress significantly decreased sunflower seed yield.

Taxon
sunflowerHelianthus annuust0
Treatment
water deficit stresse0
Outcome
seed yielde0
Direction
decreasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

e0

“The results showed that the application of water deficit stress decreased plant height, seed number per head, oil percentage, oil yield, biomass yield, seed yield, thousand seed weight and other related traits significantly.”

✓ located verbatim in the source · abstract, characters 562–786 · show in text ↑
t0

“sunflower”

✓ located verbatim in the source · title, characters 84–93 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Water deficit stress significantly decreased sunflower thousand seed weight.

Taxon
sunflowerHelianthus annuust0
Treatment
water deficit stresse0
Outcome
thousand seed weighte0
Direction
decreasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

e0

“The results showed that the application of water deficit stress decreased plant height, seed number per head, oil percentage, oil yield, biomass yield, seed yield, thousand seed weight and other related traits significantly.”

✓ located verbatim in the source · abstract, characters 562–786 · show in text ↑
t0

“sunflower”

✓ located verbatim in the source · title, characters 84–93 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Sunflower oil and grain yield was highest at 20 plant/m 2.

Taxon
sunflowerHelianthus annuust0
Treatment
20 plant/m 2e0
Outcome
oil and grain yielde0
Direction
higheste0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Means compression showed that the highest oil and grain yield, biological yield and the highest number of plant were achieved in 20 plant/m 2 .”

✓ located verbatim in the source · abstract, characters 787–930 · show in text ↑
t0

“sunflower”

✓ located verbatim in the source · title, characters 84–93 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Sunflower biological yield was highest at 20 plant/m 2.

Taxon
sunflowerHelianthus annuust0
Treatment
20 plant/m 2e0
Outcome
biological yielde0
Direction
higheste0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Means compression showed that the highest oil and grain yield, biological yield and the highest number of plant were achieved in 20 plant/m 2 .”

✓ located verbatim in the source · abstract, characters 787–930 · show in text ↑
t0

“sunflower”

✓ located verbatim in the source · title, characters 84–93 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Sunflower number of plant was highest at 20 plant/m 2.

Taxon
sunflowerHelianthus annuust0
Treatment
20 plant/m 2e0
Outcome
number of plante0
Direction
higheste0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Means compression showed that the highest oil and grain yield, biological yield and the highest number of plant were achieved in 20 plant/m 2 .”

✓ located verbatim in the source · abstract, characters 787–930 · show in text ↑
t0

“sunflower”

✓ located verbatim in the source · title, characters 84–93 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

airfloure had highest seed number per head after irrigation at 70 mm evaporation.

Taxon
sunflowerHelianthus annuust0
Material
airflouree0
Treatment
water application after 70 mm evaporation from Class A pane0
Outcome
seed number per heade0
Direction
higheste0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

e0

“In water application after 70 mm evaporation from Class A pan, airfloure and alestar cultivars had the highest seed number per head and the least hollowness percent, while the maximum biological yield was seen in airfloure cultivar in the consumption of 20 plant/m 2 and water application after 210 mm evaporation from Class A pan.”

✓ located verbatim in the source · abstract, characters 931–1262 · show in text ↑
t0

“sunflower”

✓ located verbatim in the source · title, characters 84–93 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

airfloure had least hollowness percent after irrigation at 70 mm evaporation.

Taxon
sunflowerHelianthus annuust0
Material
airflouree0
Treatment
water application after 70 mm evaporation from Class A pane0
Outcome
hollowness percente0
Direction
leaste0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

e0

“In water application after 70 mm evaporation from Class A pan, airfloure and alestar cultivars had the highest seed number per head and the least hollowness percent, while the maximum biological yield was seen in airfloure cultivar in the consumption of 20 plant/m 2 and water application after 210 mm evaporation from Class A pan.”

✓ located verbatim in the source · abstract, characters 931–1262 · show in text ↑
t0

“sunflower”

✓ located verbatim in the source · title, characters 84–93 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

alestar had highest seed number per head after irrigation at 70 mm evaporation.

Taxon
sunflowerHelianthus annuust0
Material
alestare0
Treatment
water application after 70 mm evaporation from Class A pane0
Outcome
seed number per heade0
Direction
higheste0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

e0

“In water application after 70 mm evaporation from Class A pan, airfloure and alestar cultivars had the highest seed number per head and the least hollowness percent, while the maximum biological yield was seen in airfloure cultivar in the consumption of 20 plant/m 2 and water application after 210 mm evaporation from Class A pan.”

✓ located verbatim in the source · abstract, characters 931–1262 · show in text ↑
t0

“sunflower”

✓ located verbatim in the source · title, characters 84–93 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

alestar had least hollowness percent after irrigation at 70 mm evaporation.

Taxon
sunflowerHelianthus annuust0
Material
alestare0
Treatment
water application after 70 mm evaporation from Class A pane0
Outcome
hollowness percente0
Direction
leaste0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

e0

“In water application after 70 mm evaporation from Class A pan, airfloure and alestar cultivars had the highest seed number per head and the least hollowness percent, while the maximum biological yield was seen in airfloure cultivar in the consumption of 20 plant/m 2 and water application after 210 mm evaporation from Class A pan.”

✓ located verbatim in the source · abstract, characters 931–1262 · show in text ↑
t0

“sunflower”

✓ located verbatim in the source · title, characters 84–93 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Airfloure had maximum biological yield at 20 plant/m 2 with irrigation after 210 mm evaporation.

Taxon
sunflowerHelianthus annuust0
Material
airflouree0
Treatment
20 plant/m 2 and water application after 210 mm evaporation from Class A pane0
Outcome
biological yielde0
Direction
maximume0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

e0

“In water application after 70 mm evaporation from Class A pan, airfloure and alestar cultivars had the highest seed number per head and the least hollowness percent, while the maximum biological yield was seen in airfloure cultivar in the consumption of 20 plant/m 2 and water application after 210 mm evaporation from Class A pan.”

✓ located verbatim in the source · abstract, characters 931–1262 · show in text ↑
t0

“sunflower”

✓ located verbatim in the source · title, characters 84–93 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Seed yield was highest at 20 cm density.

Taxon
sunflowerHelianthus annuust0
Treatment
20 cm densitye0
Outcome
seed yielde0
Direction
higheste0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

e0

“However, the highest seed yield was obtained at 20 cm density, and airfloure yielded higher than alestar cv.”

✓ located verbatim in the source · abstract, characters 1263–1371 · show in text ↑
t0

“sunflower”

✓ located verbatim in the source · title, characters 84–93 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Airfloure yielded more than alestar.

Taxon
sunflowerHelianthus annuust0
Material
airflouree0
Outcome
yieldede0
Direction
highere0
Comparator
alestar cv.e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

e0

“However, the highest seed yield was obtained at 20 cm density, and airfloure yielded higher than alestar cv.”

✓ located verbatim in the source · abstract, characters 1263–1371 · show in text ↑
t0

“sunflower”

✓ located verbatim in the source · title, characters 84–93 · show in text ↑

drought · quality: oil · Helianthus annuus (common sunflower)Results differ

26 papers: 2 positive, 24 negative or no effect

23 papers in the same direction as this paper · 2 in the opposite direction

  1. positive
  2. positive
  3. negative

22 papers more in this group

See all 26 papers →

drought · growth · Helianthus annuus (common sunflower)Results differ

59 papers: 9 positive, 50 negative or no effect

49 papers in the same direction as this paper · 9 in the opposite direction

  1. positive
  2. positive
  3. positive

55 papers more in this group

See all 59 papers →

drought · yield · Helianthus annuus (common sunflower)Positive and negative results

75 papers: 13 positive, 62 negative or no effect

61 papers in the same direction as this paper · 13 in the opposite direction

  1. positive
  2. positive
  3. positive

71 papers more in this group

See all 75 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.