Abstract
Whole‐plant‐based measurements do not always accurately reflect the effect of drought on cotton because of its indeterminate growth habits. We conducted pot experiments with cotton and imposed three soil water levels (75 ± 5, 60 ± 5, and 45 ± 5% of field capacity [FC]) during boll development to determine influences of drought on yield distribution and fiber quality on different fruiting branches (FB). Drought not only reduced lint yield (decreased by 31 to 35 and 57 to 60% under 60 ± 5% FC and 45 ± 5% FC, respectively) but also altered yield distribution on different FB. Drought plants produced fewer and smaller bolls on higher FB than did the well‐watered plants. Boll biomass distribution and seed number per boll on upper FB were also altered by drought. Fiber length and strength declined progressively with decreasing water availability, being more pronounced on higher FB. Micronaire value was greater on higher FB under the same water regime, while no consistent influences of drought on micronaire were obtained. Boll weight, seed index, and fiber length and strength declined linearly with decreasing mean midday leaf water potential (LWP) during fruit maturation period (FMP) in the range of about 0.7 g, 1.0 g, 2.4 mm, and 3.4 cN tex –1 per MPa, respectively. Our findings showed that the bolls at various FB differed in drought response. The LWP was a suitable index for fiber properties under production environment. These data will be valuable for designing better irrigation strategies and improving cotton simulation models.
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Claims 14
Claim · model-written summary
At 60 ± 5% field capacity, lint yield decreased by 31 to 35%.
- Taxon
- Cotton
Gossypium hirsutumt0 - Treatment
- 60 ± 5% FCe0
- Outcome
- lint yielde0
- Direction
- decreasede0
- Value
- 31 to 35e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought not only reduced lint yield (decreased by 31 to 35 and 57 to 60% under 60 ± 5% FC and 45 ± 5% FC, respectively)”
t0“Cotton”
Claim · model-written summary
At 45 ± 5% field capacity, lint yield decreased by 57 to 60%.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- 45 ± 5% FCe0
- Outcome
- lint yielde0
- Direction
- decreasede0
- Value
- 57 to 60%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought not only reduced lint yield (decreased by 31 to 35 and 57 to 60% under 60 ± 5% FC and 45 ± 5% FC, respectively)”
t0“Cotton”
Claim · model-written summary
Drought altered yield distribution among fruiting branches.
- Taxon
- CottonGossypium hirsutumt0
- Outcome
- yield distribution on different FBe0
- Direction
- alterede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“altered yield distribution on different FB”
t0“Cotton”
Claim · model-written summary
Drought plants had fewer bolls on higher branches than well-watered plants.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- Droughte0
- Outcome
- bolls on higher FBe0
- Direction
- fewere0
- Comparator
- well‐watered plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought plants produced fewer and smaller bolls on higher FB than did the well‐watered plants.”
t0“Cotton”
Claim · model-written summary
Drought plants had smaller bolls on higher branches.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- Droughte0
- Outcome
- bolls on higher FBe0
- Direction
- smallere0
- Comparator
- well‐watered plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought plants produced fewer and smaller bolls on higher FB than did the well‐watered plants.”
t0“Cotton”
Claim · model-written summary
Drought altered upper-branch boll biomass distribution and seed number per boll.
- Taxon
- CottonGossypium hirsutumt0
- Outcome
- Boll biomass distribution and seed number per boll on upper FBe0
- Direction
- alterede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Boll biomass distribution and seed number per boll on upper FB were also altered by drought.”
t0“Cotton”
Claim · model-written summary
Fiber length and strength declined as water availability decreased, especially on higher branches.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- decreasing water availabilitye0
- Outcome
- Fiber length and strengthe0
- Direction
- declinede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fiber length and strength declined progressively with decreasing water availability, being more pronounced on higher FB.”
t0“Cotton”
Claim · model-written summary
Micronaire was greater on higher branches within a water regime.
- Taxon
- CottonGossypium hirsutumt0
- Organ / stage
- higher FBe0
- Outcome
- Micronaire valuee0
- Direction
- greatere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Micronaire value was greater on higher FB under the same water regime”
t0“Cotton”
Claim · model-written summary
Drought showed no consistent effect on micronaire.
- Taxon
- CottonGossypium hirsutumt0
- Outcome
- micronairee0
- Direction
- no consistent influencese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no consistent influences of drought on micronaire were obtained”
t0“Cotton”
Claim · model-written summary
Boll weight declined about 0.7 g per MPa lower midday leaf water potential.
- Taxon
- CottonGossypium hirsutumt0
- Organ / stage
- fruit maturation period (FMP)e0
- Outcome
- Boll weighte0
- Direction
- declined linearlye0
- Value
- 0.7 ge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Boll weight, seed index, and fiber length and strength declined linearly with decreasing mean midday leaf water potential (LWP) during fruit maturation period (FMP) in the range of about 0.7 g, 1.0 g, 2.4 mm, and 3.4 cN tex –1 per MPa, respectively.”
t0“Cotton”
Claim · model-written summary
Seed index declined about 1.0 g per MPa lower midday leaf water potential.
- Taxon
- CottonGossypium hirsutumt0
- Organ / stage
- fruit maturation period (FMP)e0
- Outcome
- seed indexe0
- Direction
- declined linearlye0
- Value
- 1.0 ge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Boll weight, seed index, and fiber length and strength declined linearly with decreasing mean midday leaf water potential (LWP) during fruit maturation period (FMP) in the range of about 0.7 g, 1.0 g, 2.4 mm, and 3.4 cN tex –1 per MPa, respectively.”
t0“Cotton”
Claim · model-written summary
Fiber length declined about 2.4 mm per MPa lower midday leaf water potential.
- Taxon
- CottonGossypium hirsutumt0
- Organ / stage
- fruit maturation period (FMP)e0
- Outcome
- fiber lengthe0
- Direction
- declined linearlye0
- Value
- 2.4 mme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Boll weight, seed index, and fiber length and strength declined linearly with decreasing mean midday leaf water potential (LWP) during fruit maturation period (FMP) in the range of about 0.7 g, 1.0 g, 2.4 mm, and 3.4 cN tex –1 per MPa, respectively.”
t0“Cotton”
Claim · model-written summary
Fiber strength declined about 3.4 cN tex –1 per MPa lower midday leaf water potential.
- Taxon
- CottonGossypium hirsutumt0
- Organ / stage
- fruit maturation period (FMP)e0
- Outcome
- strengthe0
- Direction
- declined linearlye0
- Value
- 3.4 cN tex –1 per MPae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Boll weight, seed index, and fiber length and strength declined linearly with decreasing mean midday leaf water potential (LWP) during fruit maturation period (FMP) in the range of about 0.7 g, 1.0 g, 2.4 mm, and 3.4 cN tex –1 per MPa, respectively.”
t0“Cotton”
Claim · model-written summary
Leaf water potential was considered a suitable index for production fiber properties.
- Taxon
- CottonGossypium hirsutumt0
- Outcome
- suitable index for fiber propertiese0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The LWP was a suitable index for fiber properties under production environment.”
t0“Cotton”
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