Abstract
Greenhouse and laboratory experiments were carried out with the purpose of studying effects of the plant growth regulators (PGR) mepiquat chloride (MC) and cyclanilide (CY) as seed treatments on the early growth of cotton. Seeds of cultivars NuOpal, Fibermax-993, Fibermax-910, FMT-701 and FMT-523 were treated with MC (4.50 g kg-1 seed), MC+CY (1.60+0.40 g kg-1 seed) and MC+CY (4.50+1.12 g kg-1 seed). In laboratory, seed storage periods of 4 and 50 days were also tested. MC+CY treatments decreased plant height by approximately 50%, whereas MC decreased plant height about 30 to 40%. The greatest and lowest rates of MC+CY decreased the height of cotyledon node by 33 and 12% compared to MC treatment, respectively. MC and control treatments did not differ from each other on radicle length (RaL), taproot length (RL) and secondary root initiation depth (SRI). The greatest MC+CY rate resulted in the greatest SRI values, increased RL by 7% and RaL by 29% compared to the control. Seed storage period did not affect consistently the performance of treated seeds. Short-cycle cultivars have a greater sensitivity to seed treatment with PGRs, whereas CY synergizes with MC to reduce shoot growth and inhibits emission of secondary roots.
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Claims 12
Claim · model-written summary
Combined MC and CY reduced cotton plant height by approximately 50%.
- Taxon
- cotton
Gossypium hirsutumt0 - Treatment
- MC+CY treatmentse0
- Outcome
- plant heighte0
- Direction
- decreasede0
- Value
- approximately 50%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MC+CY treatments decreased plant height by approximately 50%”
t0“cotton”
Claim · model-written summary
MC reduced cotton plant height by about 30 to 40%.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- MCe0
- Outcome
- plant heighte0
- Direction
- decreasede0
- Value
- 30 to 40%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MC decreased plant height about 30 to 40%”
t0“cotton”
Claim · model-written summary
The greatest MC+CY rate reduced cotyledon node height by 33% relative to MC.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- greateste0
- Outcome
- height of cotyledon nodee0
- Direction
- decreasede0
- Value
- 33e0
- Comparator
- MC treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The greatest and lowest rates of MC+CY decreased the height of cotyledon node by 33 and 12% compared to MC treatment, respectively.”
t0“cotton”
Claim · model-written summary
The lowest MC+CY rate reduced cotyledon node height by 12% relative to MC.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- loweste0
- Outcome
- height of cotyledon nodee0
- Direction
- decreasede0
- Value
- 12%e0
- Comparator
- MC treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The greatest and lowest rates of MC+CY decreased the height of cotyledon node by 33 and 12% compared to MC treatment, respectively.”
t0“cotton”
Claim · model-written summary
MC and control did not differ in radicle length, taproot length or secondary root initiation depth.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- MCe0
- Outcome
- radicle length (RaL), taproot length (RL) and secondary root initiation depth (SRI)e0
- Direction
- did not differe0
- Comparator
- control treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MC and control treatments did not differ from each other on radicle length (RaL), taproot length (RL) and secondary root initiation depth (SRI).”
t0“cotton”
Claim · model-written summary
The greatest MC+CY rate produced the greatest secondary root initiation depth.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- greatest MC+CY ratee0
- Outcome
- SRI valuese0
- Direction
- greateste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The greatest MC+CY rate resulted in the greatest SRI values”
e1“secondary root initiation depth (SRI)”
t0“cotton”
Claim · model-written summary
The greatest MC+CY rate increased taproot length by 7% against control.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- greatest MC+CY ratee2
- Outcome
- RLe0
- Direction
- increasede0
- Value
- 7%e0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased RL by 7% and RaL by 29% compared to the control”
e1“taproot length (RL)”
e2“The greatest MC+CY rate”
t0“cotton”
Claim · model-written summary
The greatest MC+CY rate increased radicle length by 29% against control.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- greatest MC+CY ratee2
- Outcome
- RaLe0
- Direction
- increasede0
- Value
- 29%e0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased RL by 7% and RaL by 29% compared to the control”
e1“radicle length (RaL)”
e2“The greatest MC+CY rate”
t0“cotton”
Claim · model-written summary
Seed storage duration did not consistently affect treated seed performance.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Seed storage periode0
- Outcome
- performance of treated seedse0
- Direction
- did not affect consistentlye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed storage period did not affect consistently the performance of treated seeds.”
t0“cotton”
Claim · model-written summary
Short-cycle cultivars were more sensitive to seed PGR treatment.
- Taxon
- cottonGossypium hirsutumt0
- Material
- Short-cycle cultivarse0
- Treatment
- seed treatment with PGRse0
- Outcome
- sensitivitye0
- Direction
- greatere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Short-cycle cultivars have a greater sensitivity to seed treatment with PGRs”
t0“cotton”
Claim · model-written summary
CY synergized with MC to reduce cotton shoot growth.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- CYe0
- Outcome
- shoot growthe0
- Direction
- reducee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CY synergizes with MC to reduce shoot growth”
t0“cotton”
Claim · model-written summary
CY with MC inhibited emission of secondary roots.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- CYe0
- Outcome
- emission of secondary rootse0
- Direction
- inhibitse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CY synergizes with MC to reduce shoot growth and inhibits emission of secondary roots”
t0“cotton”
The same questions in other papers
mepiquat chloride · growth · Gossypium hirsutum (cotton)Positive and negative results
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- no effect
- negative
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See all 49 papers →chloride · growth · Gossypium hirsutum (cotton)Positive and negative results
39 papers in the same direction as this paper · 10 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- negative
- negative
47 papers more in this group
See all 51 papers →cyclanilide · growth · Gossypium hirsutum (cotton)Results agree
2 papers in the same direction as this paper
- positive
- positive
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.