Abstract
Three water stress treatments were applied at early, mid and late stages of vegetative development in sunflower. The effects of these stresses on leaf area, cell frequency, number of cells per leaf and palisade cell area were examined. Final leaf area was reduced in all stress treatments. The largest reduction occurred in leaves that were unfolding or about to unfold at the commencement of stress. At full expansion of these leaves cell frequency had increased, cell number had decreased and cell area had decreased. These results help to explain the effects of stress on final leaf area, especially the reduced area of the lower leaves that are most sensitive to water stress.
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Claims 5
Claim · model-written summary
Final sunflower leaf area declined under every water stress treatment.
- Taxon
- sunflower
Helianthus annuuse0 - Treatment
- water stress treatmentse0
- Outcome
- Final leaf areae0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sunflower (Helianthus annuus L.)”
e0“Three water stress treatments were applied at early, mid and late stages of vegetative development in sunflower. The effects of these stresses on leaf area, cell frequency, number of cells per leaf and palisade cell area were examined. Final leaf area was reduced in all stress treatments”
Claim · model-written summary
Leaves unfolding or about to unfold at stress onset had the largest area reduction.
- Taxon
- SunflowerHelianthus annuust0
- Organ / stage
- leaves that were unfolding or about to unfolde0
- Outcome
- largest reductione0
- Direction
- reductione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The largest reduction occurred in leaves that were unfolding or about to unfold at the commencement of stress”
t0“Sunflower”
Claim · model-written summary
Cell frequency increased in stress sensitive leaves at full expansion.
- Taxon
- SunflowerHelianthus annuust0
- Organ / stage
- full expansione0
- Treatment
- water stress treatmentse1
- Outcome
- cell frequencye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At full expansion of these leaves cell frequency had increased, cell number had decreased and cell area had decreased”
e1“water stress treatments”
t0“Sunflower”
Claim · model-written summary
Cell number decreased in those leaves at full expansion.
- Taxon
- SunflowerHelianthus annuust0
- Organ / stage
- full expansione0
- Treatment
- water stress treatmentse1
- Outcome
- cell numbere0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At full expansion of these leaves cell frequency had increased, cell number had decreased and cell area had decreased”
e1“water stress treatments”
t0“Sunflower”
Claim · model-written summary
Cell area decreased in those leaves at full expansion.
- Taxon
- SunflowerHelianthus annuust0
- Organ / stage
- full expansione0
- Treatment
- water stress treatmentse1
- Outcome
- cell areae0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At full expansion of these leaves cell frequency had increased, cell number had decreased and cell area had decreased”
e1“water stress treatments”
t0“Sunflower”
The same questions in other papers
drought · growth · Helianthus annuus (common sunflower)Results differ
49 papers in the same direction as this paper · 9 in the opposite direction
- no effect
- positive
- positive
55 papers more in this group
See all 59 papers →drought · cytology · Helianthus annuus (common sunflower)Results agree
1 paper in the same direction as this paper
- negative
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.