Abstract
The biological effects of an s-triazine insecticide: menazon (MEN), a substituted urea herbicide: metobromuron (PAT) and an aromatic hydrocarbon fungicide: tetrachloroisophthalonitrile (DAC) were compared with those of ethylmethanesulfonate (EMS) and X-irradiation. Seeds of barley (Hordeum vulgare L.) were soaked in solutions of the chemicals before determining percentage germination, seedling height and frequency of chromosomal aberrations. In addition, somatic mutations in inflorescences of Tradescantia clone 02 treated with solutions of the chemicals were counted. X-rays induced a high frequency of chromosome breaks but had no effect on any other character. In contrast, EMS had a pronounced effect on all the characters studied. Only one pesticide, PAT, had significant effects. The herbicide reduced germination percentage, seedling height and the mitotic index in barley. It is concluded that EMS and X-rays have a cytogenetic action in the treated cells, whereas PAT induced a severe physiological effect.
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Claims 6
Claim · model-written summary
X-rays induced frequent chromosome breaks in treated plant cells.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaree1 - Treatment
- X-rayse0
- Outcome
- chromosome breakse0
- Direction
- high frequencye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“X-rays induced a high frequency of chromosome breaks but had no effect on any other character”
e1“Seeds of barley (Hordeum vulgare L.)”
Claim · model-written summary
X-rays did not affect other measured characters.
- Taxon
- barleyHordeum vulgaree1
- Treatment
- X-rayse0
- Outcome
- any other charactere0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“X-rays induced a high frequency of chromosome breaks but had no effect on any other character”
e1“Seeds of barley (Hordeum vulgare L.)”
Claim · model-written summary
EMS markedly affected all studied characters.
- Taxon
- barleyHordeum vulgaree1
- Treatment
- EMSe0
- Outcome
- all the characters studiede0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“EMS had a pronounced effect on all the characters studied”
e1“Seeds of barley (Hordeum vulgare L.)”
Claim · model-written summary
Among pesticides, only PAT had significant effects.
- Taxon
- barleyHordeum vulgaree1
- Treatment
- PATe0
- Outcome
- effectse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Only one pesticide, PAT, had significant effects”
e1“Seeds of barley (Hordeum vulgare L.)”
Claim · model-written summary
PAT reduced barley germination percentage and seedling height.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- herbicidee0
- Outcome
- germination percentage, seedling heighte0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The herbicide reduced germination percentage, seedling height and the mitotic index in barley”
Claim · model-written summary
PAT reduced the barley mitotic index.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- herbicidee0
- Outcome
- mitotic indexe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The herbicide reduced germination percentage, seedling height and the mitotic index in barley”
The same questions in other papers
herbicide · growth · Hordeum vulgare (barley)Positive and negative results
13 papers in the same direction as this paper · 8 in the opposite direction
- positive
- positive
- positive
18 papers more in this group
See all 22 papers →herbicide · cytology · Hordeum vulgare (barley)Results agree
1 paper in the same direction as this paper
- negative
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.