Abstract
Abstract The response of cultured cotton ( Gossypium hirsutum L.) ovules to the ethylene releasing growth regulator, (2‐chloroethyl) phosphonic acid (ethephon), was measured. Control ovules grown on a complete liquid medium without hormones continued the differentiation normal for cotton, although at a slower rate than in vivo . When ethephon was added to the medium, normal organ and fiber development was inhibited but callus was induced from the micropylar end of the ovule. The callus was extremely friable and produced many free cells in the culture medium. Dry weight of the callused ovules increased over 4‐fold and total cell number increased 56% over the controls. Apparently ethylene released from the ethephon stimulated both cell division and cell expansion in forming the callus.
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Claims 6
Claim · model-written summary
Ethephon in the medium inhibited normal organ and fibre development of cultured cotton ovules compared with control ovules.
- Taxon
- Gossypium hirsutum
Gossypium hirsutume0 - Treatment
- ethephone2
- Outcome
- normal organ and fiber developmente2
- Direction
- inhibitede2
- Comparator
- Control ovulese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cultured cotton ( Gossypium hirsutum L.) ovules”
e1“Control ovules grown on a complete liquid medium without hormones”
e2“When ethephon was added to the medium, normal organ and fiber development was inhibited”
Claim · model-written summary
Ethephon induced callus from the micropylar end of cultured cotton ovules.
- Taxon
- Gossypium hirsutumGossypium hirsutume0
- Organ / stage
- micropylar end of the ovulee3
- Treatment
- ethephone2
- Outcome
- calluse3
- Direction
- inducede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cultured cotton ( Gossypium hirsutum L.) ovules”
e2“When ethephon was added to the medium, normal organ and fiber development was inhibited”
e3“callus was induced from the micropylar end of the ovule”
Claim · model-written summary
Dry weight of callused cotton ovules increased over 4-fold with ethephon.
- Taxon
- Gossypium hirsutumGossypium hirsutume0
- Treatment
- ethephone2
- Outcome
- Dry weight of the callused ovulese4
- Direction
- increasede4
- Value
- over 4‐folde4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cultured cotton ( Gossypium hirsutum L.) ovules”
e2“When ethephon was added to the medium, normal organ and fiber development was inhibited”
e4“Dry weight of the callused ovules increased over 4‐fold”
Claim · model-written summary
Total cell number of ethephon-treated cotton ovules increased 56% over the controls.
- Taxon
- Gossypium hirsutumGossypium hirsutume0
- Treatment
- ethephone2
- Outcome
- total cell numbere5
- Direction
- increasede5
- Value
- 56%e5
- Comparator
- the controlse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cultured cotton ( Gossypium hirsutum L.) ovules”
e2“When ethephon was added to the medium, normal organ and fiber development was inhibited”
e5“total cell number increased 56% over the controls”
Claim · model-written summary
Ethylene released from ethephon appears to stimulate cell division and cell expansion in forming the callus of cotton ovules.
- Taxon
- Gossypium hirsutumGossypium hirsutume0
- Compound
- ethylenee6
- Outcome
- cell division and cell expansione6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cultured cotton ( Gossypium hirsutum L.) ovules”
e6“Apparently ethylene released from the ethephon stimulated both cell division and cell expansion in forming the callus”
Claim · model-written summary
Control cotton ovules continued differentiation at a slower rate than in vivo.
- Taxon
- Gossypium hirsutumGossypium hirsutume0
- Treatment
- without hormonese1
- Outcome
- differentiatione1
- Direction
- slower ratee1
- Comparator
- in vivoe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cultured cotton ( Gossypium hirsutum L.) ovules”
e1“Control ovules grown on a complete liquid medium without hormones continued the differentiation normal for cotton, although at a slower rate than in vivo”
The same questions in other papers
(2-chloroethyl)phosphonic acid · quality: grain · Gossypium hirsutum (cotton)Results differ
7 papers in the same direction as this paper · 3 in the opposite direction
- positive
- positive
- positive
7 papers more in this group
See all 11 papers →(2-chloroethyl)phosphonic acid · cytology · Gossypium hirsutum (cotton)Positive and negative results
1 in the opposite direction
- negative
(2-chloroethyl)phosphonic acid · growth · Gossypium hirsutum (cotton)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- no effect
- no effect
- 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.