Abstract
A field experiment was conducted during the summer of 1988 to test the hypothesis that water deficit affects the abscisic acid (ABA) and indole acetic acid (IAA) concentrations in cotton (Gossypium hirsutum L.) flower buds in ways that predispose young fruits (bolls) that subsequently develop from them to increased abscission rates. Water deficit had little effect on the ABA content of flower buds but increased the ABA content of flowers as much as 66%. Water deficit decreased the concentrations of free and conjugated IAA in flower buds during the first irrigation cycle but increased them during the second cycle. Flowers contained much less IAA than buds. Water deficit slightly increased the conjugated IAA content of flowers but had no effect on the concentration of free IAA in flowers. Because water deficit slightly increased the ABA content but did not decrease the IAA content of flowers, any carry-over effect of water deficit on young boll shedding might have been caused by changes in ABA but not from changes in IAA.
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Claims 8
Claim · model-written summary
Water deficit had little effect on flower-bud ABA content.
- Taxon
- cotton
Gossypium hirsutumt0 - Organ / stage
- flower budse0
- Treatment
- Water deficite0
- Outcome
- ABA contente0
- Direction
- little effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water deficit had little effect on the ABA content of flower buds”
t0“Cotton”
Claim · model-written summary
Water deficit increased flower ABA content by as much as 66%.
- Taxon
- CottonGossypium hirsutumt0
- Organ / stage
- flowerse0
- Treatment
- Water deficite0
- Outcome
- ABA contente0
- Direction
- increasede0
- Value
- 66%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water deficit had little effect on the ABA content of flower buds but increased the ABA content of flowers as much as 66%”
t0“Cotton”
Claim · model-written summary
Water deficit decreased free and conjugated IAA in flower buds during the first irrigation cycle.
- Taxon
- CottonGossypium hirsutumt0
- Organ / stage
- flower budse0
- Treatment
- Water deficite0
- Outcome
- concentrations of free and conjugated IAAe0
- Direction
- decreasede0
- Qualifier
- first irrigation cyclee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water deficit decreased the concentrations of free and conjugated IAA in flower buds during the first irrigation cycle”
t0“Cotton”
Claim · model-written summary
Water deficit increased free and conjugated IAA in flower buds during the second irrigation cycle.
- Taxon
- CottonGossypium hirsutumt0
- Organ / stage
- flower budse0
- Treatment
- Water deficite0
- Outcome
- free and conjugated IAAe0
- Direction
- increasede0
- Qualifier
- second cyclee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water deficit decreased the concentrations of free and conjugated IAA in flower buds during the first irrigation cycle but increased them during the second cycle”
t0“Cotton”
Claim · model-written summary
Flowers contained much less IAA than buds.
- Taxon
- CottonGossypium hirsutumt0
- Organ / stage
- Flowerse0
- Outcome
- IAAe0
- Direction
- much lesse0
- Comparator
- budse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Flowers contained much less IAA than buds”
t0“Cotton”
Claim · model-written summary
Water deficit slightly increased conjugated IAA in flowers.
- Taxon
- CottonGossypium hirsutumt0
- Organ / stage
- flowerse0
- Treatment
- Water deficite0
- Outcome
- conjugated IAA contente0
- Direction
- slightly increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water deficit slightly increased the conjugated IAA content of flowers”
t0“Cotton”
Claim · model-written summary
Water deficit had no effect on free IAA concentration in flowers.
- Taxon
- CottonGossypium hirsutumt0
- Organ / stage
- flowerse0
- Treatment
- Water deficite0
- Outcome
- concentration of free IAAe0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water deficit slightly increased the conjugated IAA content of flowers but had no effect on the concentration of free IAA in flowers”
t0“Cotton”
Claim · model-written summary
The authors suggest that carry-over effects on young boll shedding may involve ABA changes.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- water deficite0
- Compound
- ABAe0
- Outcome
- young boll sheddinge0
- Qualifier
- might have been causede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“any carry-over effect of water deficit on young boll shedding might have been caused by changes in ABA but not from changes in IAA”
t0“Cotton”
The same questions in other papers
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- negative
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19 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- positive
- positive
18 papers more in this group
See all 22 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.