Abstract
The effects of the insecticide O-4-brome-2, 5 -dichloro-phenyl O-methyl phenylthiophosphonate “Leptophos” has been studied on: root-mitosis, seed-germination, root- and shoot-lengths of Vicia faba. Two types of treatments were conducted: seed-soak and root-treatments. Both treatments affected a significant percentage of abnormal mitoses. Seed-soak treatments for 48 and 72 hours affected marked inhibition of cell division. Disturbed prophases, meta- and anaphases (where the chromosomes spread irregularly in the cell) comprised the main type of the observed anomalies. Lagging chromosomes and chromosome fragmentation were also observed.Soaking the seeds in a saturated solution of Leptophos for 72 hours caused marked inhibition of root- and shoot-growth, which was attributed to the inhibition of cell division.
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Claims 6
Claim · model-written summary
Both seed soak and root treatments produced abnormal mitoses.
- Taxon
- Vicia faba
Vicia fabat0 - Treatment
- seed-soak and root-treatmentse1
- Outcome
- abnormal mitosese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both treatments affected a significant percentage of abnormal mitoses”
e1“Two types of treatments were conducted: seed-soak and root-treatments”
t0“Vicia faba”
Claim · model-written summary
Seed soaking for 48 and 72 hours markedly inhibited cell division.
- Taxon
- Vicia fabaVicia fabat0
- Treatment
- Seed-soak treatments for 48 and 72 hourse0
- Outcome
- cell divisione0
- Direction
- inhibitione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed-soak treatments for 48 and 72 hours affected marked inhibition of cell division”
t0“Vicia faba”
Claim · model-written summary
Disturbed prophases, metaphases and anaphases were the main mitotic anomalies.
- Taxon
- Vicia fabaVicia fabat0
- Outcome
- Disturbed prophases, meta- and anaphasese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Disturbed prophases, meta- and anaphases (where the chromosomes spread irregularly in the cell) comprised the main type of the observed anomalies”
t0“Vicia faba”
Claim · model-written summary
Lagging chromosomes and chromosome fragmentation were observed.
- Taxon
- Vicia fabaVicia fabat0
- Outcome
- Lagging chromosomes and chromosome fragmentatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lagging chromosomes and chromosome fragmentation were also observed”
t0“Vicia faba”
Claim · model-written summary
Seventy two hours of soaking in saturated leptophos inhibited root growth.
- Taxon
- Vicia fabaVicia fabat0
- Treatment
- Soaking the seeds in a saturated solution of Leptophos for 72 hourse0
- Outcome
- root- and shoot-growthe0
- Direction
- inhibitione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soaking the seeds in a saturated solution of Leptophos for 72 hours caused marked inhibition of root- and shoot-growth”
t0“Vicia faba”
Claim · model-written summary
Leptophos growth inhibition was attributed to inhibition of cell division.
- Taxon
- Vicia fabaVicia fabat0
- Treatment
- Leptophose1
- Outcome
- root- and shoot-growthe1
- Qualifier
- inhibition of cell divisione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“which was attributed to the inhibition of cell division”
e1“Soaking the seeds in a saturated solution of Leptophos for 72 hours caused marked inhibition of root- and shoot-growth”
t0“Vicia faba”
The same questions in other papers
application · growth · Vicia faba (faba bean)Positive and negative results
7 papers in the same direction as this paper · 58 in the opposite direction
- positive
- positive
- positive
62 papers more in this group
See all 66 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.