Abstract
Boll abortion is increased when cotton ( Gossypium hirsutum L.) experiences various stresses during its reproductive development that can consequently reduce lint yield. Before abscission, an increase in ethylene is observed which may be assumed to be the signal necessary to initiate abscission of that particular structure. It is desirable to prevent fruit loss that may be induced by the peak in ethylene before abscission. One potential option to cope with the loss of cotton reproductive structures is the use of ethylene inhibitors. Thus, the objective of this investigation was to determine the impact of 1‐methylcyclopropene (1‐MCP) on growth and yield components of cotton plants treated with ethephon (ethylene synthetic hormone) under field conditions. Field studies were conducted as a randomized complete block design with four replications in 2007 and 2008. Treatments were three rates of 1‐MCP in combination with a surfactant applied at mid‐bloom. One day later, ethephon was applied as a source of abiotic stress. At harvest, the fruit set in the upper portion of the canopy was influenced by 1‐MCP. It had a greater number of full size, yet immature bolls, which potentially could have had a positive influence in the lint yield. However, ethephon caused the highest lint yield since ethephon‐treated plants had more open as well as total bolls in the lower canopy at harvest. In conclusion, 1‐MCP improved growth and yield components mainly in the upper portion of plants canopy at harvest, but such an improvement was not converted into lint yield.
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Claims 6
Claim · model-written summary
1-MCP affected upper-canopy fruit set at harvest.
Not reportedTaxonComparatorDirection
Verbatim
e0“At harvest, the fruit set in the upper portion of the canopy was influenced by 1‐MCP”
Claim · model-written summary
1-MCP produced more full-size immature upper-canopy bolls.
- Taxon
- Cotton
Gossypium hirsutumt0 - Outcome
- number of full size, yet immature bollse0
- Direction
- greatere0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It had a greater number of full size, yet immature bolls”
t0“Cotton”
Claim · model-written summary
Ethephon produced the highest lint yield.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- ethephone0
- Outcome
- lint yielde0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ethephon caused the highest lint yield”
t0“Cotton”
Claim · model-written summary
Ethephon-treated plants had more open and total lower-canopy bolls at harvest.
- Taxon
- CottonGossypium hirsutumt0
- Organ / stage
- lower canopye0
- Treatment
- ethephone0
- Outcome
- open as well as total bollse0
- Direction
- moree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ethephon‐treated plants had more open as well as total bolls in the lower canopy at harvest”
t0“Cotton”
Claim · model-written summary
1-MCP improved growth and yield components mainly in the upper canopy.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- 1‐MCPe0
- Outcome
- growth and yield componentse0
- Direction
- improvede0
- Qualifier
- mainly in the upper portion of plants canopy at harveste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1‐MCP improved growth and yield components mainly in the upper portion of plants canopy at harvest”
t0“Cotton”
Claim · model-written summary
The 1-MCP improvement did not translate into lint yield.
- Taxon
- CottonGossypium hirsutumt0
- Outcome
- lint yielde0
- Direction
- no_changeinferrede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“such an improvement was not converted into lint yield”
t0“Cotton”
The same questions in other papers
(2-chloroethyl)phosphonic acid · quality: grain · Gossypium hirsutum (cotton)Results differ
2 papers in the same direction as this paper · 8 in the opposite direction
- negative
- negative
- no effect
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See all 11 papers →1-methylcyclopropene · yield · Gossypium hirsutum (cotton)Results differ
10 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- positive
9 papers more in this group
See all 13 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.