Abstract
In order to study the effect of growth regulators(DPC) on canopy architecture and yield characteristics of cotton at different planting densities,two elements experiment with two levels of growth regulator and three plant densities was conducted.Results showed that under different levels of growth regulator,the leaf area index(LAI) and mean foliage angle(MFA) increased as planting density increased,while the canopy transmission coefficiency for radiation penetration(TR) decreased.Very high planting density impacted the canopy structure negatively,resulting in a rapid decline of canopy photosynthetic rate(CAP).The LAI,MFA and CAP decreased with the amount of growth regulator increasing,but TR increased.Although light interception index and dry matter weight reduced,the proportion of dry-matter distributing to the reproductive organs increased rapidly.The LAI,MFA and CAP displayed a highly significant positive correlation with boll number and yields of lint at later full bolling and boll opening stage.The TR correlated negatively with dry matter of above-ground from flowering to boll opening stage.Therefore,enhancement of leaf area,mean foliage inclination angle and photosynthesis capacity during full bolling and boll opening stage could lead to increase of yield of lint.
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Claims 10
Claim · model-written summary
Leaf area index and mean foliage angle of cotton increased as planting density increased.
- Taxon
- Cotton
Gossypium hirsutumt0 - Treatment
- planting densitye1
- Outcome
- leaf area index(LAI) and mean foliage angle(MFA)e1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the leaf area index(LAI) and mean foliage angle(MFA) increased as planting density increased”
t0“Cotton under Different Planting Densities”
Claim · model-written summary
Canopy transmission coefficient for radiation penetration of cotton decreased as planting density increased.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- planting densitye1
- Outcome
- canopy transmission coefficiency for radiation penetration(TR)e1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the leaf area index(LAI) and mean foliage angle(MFA) increased as planting density increased,while the canopy transmission coefficiency for radiation penetration(TR) decreased”
t0“Cotton under Different Planting Densities”
Claim · model-written summary
Very high planting density reduced canopy photosynthetic rate of cotton.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- Very high planting densitye2
- Outcome
- canopy photosynthetic rate(CAP)e2
- Direction
- rapid declinee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Very high planting density impacted the canopy structure negatively,resulting in a rapid decline of canopy photosynthetic rate(CAP)”
t0“Cotton under Different Planting Densities”
Claim · model-written summary
Growth regulator decreased leaf area index, mean foliage angle and canopy photosynthetic rate of cotton.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- growth regulatore3
- Outcome
- LAI,MFA and CAPe3
- Direction
- decreasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The LAI,MFA and CAP decreased with the amount of growth regulator increasing,but TR increased”
t0“Cotton under Different Planting Densities”
Claim · model-written summary
Growth regulator increased canopy transmission coefficient for radiation penetration of cotton.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- growth regulatore3
- Outcome
- TRe3
- Direction
- increasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The LAI,MFA and CAP decreased with the amount of growth regulator increasing,but TR increased”
t0“Cotton under Different Planting Densities”
Claim · model-written summary
Light interception index and dry matter weight of cotton were reduced by growth regulator.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- growth regulatore3
- Outcome
- light interception index and dry matter weighte4
- Direction
- reducede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Although light interception index and dry matter weight reduced,the proportion of dry-matter distributing to the reproductive organs increased rapidly”
e3“The LAI,MFA and CAP decreased with the amount of growth regulator increasing,but TR increased”
t0“Cotton under Different Planting Densities”
Claim · model-written summary
Proportion of dry matter distributed to reproductive organs of cotton increased rapidly.
- Taxon
- CottonGossypium hirsutumt0
- Organ / stage
- reproductive organse4
- Treatment
- growth regulatore3
- Outcome
- proportion of dry-matter distributing to the reproductive organse4
- Direction
- increased rapidlye4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“the proportion of dry-matter distributing to the reproductive organs increased rapidly”
e3“The LAI,MFA and CAP decreased with the amount of growth regulator increasing,but TR increased”
t0“Cotton under Different Planting Densities”
Claim · model-written summary
Leaf area index, mean foliage angle and canopy photosynthetic rate of cotton correlated positively with boll number and lint yield at later full bolling and boll opening stage.
- Taxon
- CottonGossypium hirsutumt0
- Organ / stage
- later full bolling and boll opening stagee5
- Outcome
- boll number and yields of linte5
- Direction
- positive correlatione5
- Qualifier
- highly significante5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“The LAI,MFA and CAP displayed a highly significant positive correlation with boll number and yields of lint at later full bolling and boll opening stage”
t0“Cotton under Different Planting Densities”
Claim · model-written summary
Canopy transmission coefficient for radiation penetration of cotton correlated negatively with above-ground dry matter from flowering to boll opening.
- Taxon
- CottonGossypium hirsutumt0
- Organ / stage
- from flowering to boll opening stagee6
- Outcome
- dry matter of above-grounde6
- Direction
- correlated negativelye6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“The TR correlated negatively with dry matter of above-ground from flowering to boll opening stage”
t0“Cotton under Different Planting Densities”
Claim · model-written summary
Enhancing leaf area, mean foliage inclination angle and photosynthesis capacity during full bolling and boll opening could increase cotton lint yield.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- enhancement of leaf areae7
- Outcome
- yield of linte7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Therefore,enhancement of leaf area,mean foliage inclination angle and photosynthesis capacity during full bolling and boll opening stage could lead to increase of yield of lint”
t0“Cotton under Different Planting Densities”
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