Abstract
SUMMARY Infestation with the bird cherry‐oat aphid considerably reduced the dry weight yield, the leaf area, the number of tillers and the number of leaves of barley plants. Growth analysis revealed that the major effect of infestation was to reduce unit leaf rate. However, infested plants compensated partially for this by allocating a greater proportion of their dry weight to the production of leaf laminae than did the control plants. Rates of net photosynthesis in individual, attached leaves were measured using the carbon dioxide exchange method; infested and control plants were found to have very similar rates of photosynthesis. Thus the reduction of unit leaf rate did not result from an effect of photosynthesis. It is suggested that the decreased growth of the barley plants is explicable in terms of cumulative assimilate loss due to aphid feeding.
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Claims 8
Claim · model-written summary
Aphid infestation considerably reduced barley dry weight yield.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaree0 - Treatment
- Infestation with the bird cherry‐oat aphide0
- Interactor
- bird cherry‐oat aphid
_Figure_1_a.jpg?width=60)
Rhopalosiphum padie0pest - Outcome
- dry weight yielde0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
_Figure_1_a.jpg?width=500)
Verbatim
e0“Infestation with the bird cherry‐oat aphid considerably reduced the dry weight yield, the leaf area, the number of tillers and the number of leaves of barley plants.”
Claim · model-written summary
Aphid infestation considerably reduced barley leaf area.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- Infestation with the bird cherry‐oat aphide0
- Interactor
- bird cherry‐oat aphidRhopalosiphum padie0pest
- Outcome
- leaf areae0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Infestation with the bird cherry‐oat aphid considerably reduced the dry weight yield, the leaf area, the number of tillers and the number of leaves of barley plants.”
Claim · model-written summary
Aphid infestation considerably reduced barley number of tillers.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- Infestation with the bird cherry‐oat aphide0
- Interactor
- bird cherry‐oat aphidRhopalosiphum padie0pest
- Outcome
- number of tillerse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Infestation with the bird cherry‐oat aphid considerably reduced the dry weight yield, the leaf area, the number of tillers and the number of leaves of barley plants.”
Claim · model-written summary
Aphid infestation considerably reduced barley number of leaves.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- Infestation with the bird cherry‐oat aphide0
- Interactor
- bird cherry‐oat aphidRhopalosiphum padie0pest
- Outcome
- number of leavese0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Infestation with the bird cherry‐oat aphid considerably reduced the dry weight yield, the leaf area, the number of tillers and the number of leaves of barley plants.”
Claim · model-written summary
Aphid infestation reduced unit leaf rate.
- Taxon
- BARLEYHordeum vulgaret0
- Treatment
- infestatione0
- Outcome
- unit leaf ratee0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the major effect of infestation was to reduce unit leaf rate”
t0“BARLEY”
Claim · model-written summary
Infested plants allocated a greater share of dry weight to leaf laminae than controls.
- Taxon
- BARLEYHordeum vulgaret0
- Treatment
- infested plantse0
- Outcome
- proportion of their dry weight to the production of leaf laminaee0
- Direction
- greatere0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“infested plants compensated partially for this by allocating a greater proportion of their dry weight to the production of leaf laminae than did the control plants”
t0“BARLEY”
Claim · model-written summary
Infested and control leaves had very similar net photosynthesis rates.
- Taxon
- BARLEYHordeum vulgaret0
- Treatment
- infestede0
- Outcome
- rates of photosynthesise0
- Direction
- very similare0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“infested and control plants were found to have very similar rates of photosynthesis”
t0“BARLEY”
Claim · model-written summary
The authors attributed decreased barley growth to cumulative assimilate loss from aphid feeding.
- Taxon
- barleyHordeum vulgaree0
- Outcome
- decreased growthe0
- Qualifier
- cumulative assimilate loss due to aphid feedinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It is suggested that the decreased growth of the barley plants is explicable in terms of cumulative assimilate loss due to aphid feeding.”
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See all 22 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.