Abstract
The root growth of 5 cotton varieties(DP,BG,ZH,LV,HK)(Gossypium hirsutum L.) was investigated in plant growth chamber with 25℃-28℃ and photoperiod of 12hrs light and 12hrs dark.The result showed that root-tip cutting prohibited significantly the root growth of cotton seedling,and cutting at the second day of germination had the most severe impact.Varieties DP and BG were sensitive to the cutting period,but HK and LV sensitive to the cutting length.Moderate water deficit promoted the root growth.HK was very sensitive to,but the others had a moderate resistance to water deficit.However,the resistant mechanism was different: DP and BG by increasing root length and ZH and LV by increasing dry matter mainly.Short heat shock had a significant inhibiting effect on root growth,which varied from the period treated at,temperature treated on and time treated for.Soaking the seed in IAA solution promoted the root growth with increased root area,length and dry weight.Among the varieties,ZH,DP and LV were more sensitive than BG and HK to IAA.The optimum concentration of IAA solution was 1mg·kg-1 for 4-Cl-IAA(1 atom of chloral was added in IAA) and 5,6-Cl-IAA(2 atoms of chloral was added in IAA),and 20mg·kg-1 for IAA(none chloral atom in IAA).
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Claims 13
Claim · model-written summary
Root tip cutting significantly inhibited cotton seedling root growth, most severely when performed on the second germination day.
- Taxon
- cotton
Gossypium hirsutume0 - Treatment
- root-tip cuttinge0
- Outcome
- root growth of cotton seedlinge0
- Direction
- prohibitede0
- Qualifier
- cutting at the second day of germinatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“root-tip cutting prohibited significantly the root growth of cotton seedling,and cutting at the second day of germination had the most severe impact”
Claim · model-written summary
DP and BG were sensitive to cutting period.
- Taxon
- cottonGossypium hirsutumt0
- Material
- DP and BGe0
- Outcome
- sensitive to the cutting periode0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Varieties DP and BG were sensitive to the cutting period”
t0“Cotton”
Claim · model-written summary
HK and LV were sensitive to cutting length.
- Taxon
- cottonGossypium hirsutumt0
- Material
- HK and LVe0
- Outcome
- sensitive to the cutting lengthe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HK and LV sensitive to the cutting length”
t0“Cotton”
Claim · model-written summary
Moderate water deficit promoted cotton root growth.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Moderate water deficite0
- Outcome
- root growthe0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Moderate water deficit promoted the root growth”
t0“Cotton”
Claim · model-written summary
HK was very sensitive to water deficit while the other varieties had moderate resistance.
- Taxon
- cottonGossypium hirsutumt0
- Material
- HKe0
- Outcome
- very sensitive toe0
- Qualifier
- the others had a moderate resistance to water deficite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HK was very sensitive to,but the others had a moderate resistance to water deficit”
t0“Cotton”
Claim · model-written summary
DP and BG resistance to water deficit operated mainly through increased root length.
- Taxon
- cottonGossypium hirsutumt0
- Material
- DP and BGe0
- Outcome
- root lengthe0
- Qualifier
- increasing root lengthe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DP and BG by increasing root length”
t0“Cotton”
Claim · model-written summary
ZH and LV resistance to water deficit operated mainly through increased dry matter.
- Taxon
- cottonGossypium hirsutumt0
- Material
- ZH and LVe0
- Outcome
- dry mattere0
- Qualifier
- increasing dry matter mainlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ZH and LV by increasing dry matter mainly”
t0“Cotton”
Claim · model-written summary
Short heat shock significantly inhibited root growth, with effects varying by treatment period, temperature and duration.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Short heat shocke0
- Outcome
- root growthe0
- Direction
- inhibitinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Short heat shock had a significant inhibiting effect on root growth,which varied from the period treated at,temperature treated on and time treated for”
t0“Cotton”
Claim · model-written summary
IAA seed soaking promoted cotton root area, length and dry weight.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Soaking the seed in IAA solutione0
- Outcome
- root area,length and dry weighte0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soaking the seed in IAA solution promoted the root growth with increased root area,length and dry weight”
t0“Cotton”
Claim · model-written summary
ZH, DP and LV were more sensitive to IAA than BG and HK.
- Taxon
- cottonGossypium hirsutumt0
- Material
- ZH,DP and LVe0
- Outcome
- sensitive than BG and HK to IAAe0
- Comparator
- BG and HKe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ZH,DP and LV were more sensitive than BG and HK to IAA”
t0“Cotton”
Claim · model-written summary
The optimum 4-Cl-IAA concentration was 1mg·kg-1.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- 4-Cl-IAAe0
- Outcome
- optimum concentration of IAA solutione0
- Value
- 1mg·kg-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The optimum concentration of IAA solution was 1mg·kg-1 for 4-Cl-IAA”
t0“Cotton”
Claim · model-written summary
The optimum 5,6-Cl-IAA concentration was 1mg·kg-1.
- Taxon
- cottonGossypium hirsutumt0
- Outcome
- 5,6-Cl-IAAe0
- Value
- 1mg·kg-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1mg·kg-1 for 4-Cl-IAA(1 atom of chloral was added in IAA) and 5,6-Cl-IAA”
t0“Cotton”
Claim · model-written summary
The optimum IAA concentration was 20mg·kg-1.
- Taxon
- cottonGossypium hirsutumt0
- Outcome
- IAAe0
- Value
- 20mg·kg-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“20mg·kg-1 for IAA”
t0“Cotton”
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