Abstract
Abstract 1. Some isolates of barley yellow dwarf virus (BYDV) differing in vector transmission characteristics and in host plant reactions were studied in single and mixed inoculations in glass‐house trials. 2. The symptoms obtained depended on the isolate of BYDV, and the interval between the protective and test inoculation and the variety of host plant. 3. Two of the isolates showed complete protection in Macrosiphum avenae (F.) aphids and in Clintland 60 oats plants. These 2 isolates differed in pathogenicity and in vector specificity. 4. Although interference (protection and synergism) was found in these tests, it appears to be of little value in determining relations between isolates of BYDV. 5. It is thought best at present to assume that there is only one barley yellow dwarf virus with a wide host range in grasses and cereals and differing in adaptation for transmission by several aphid species. 6. Several glass‐house trials confirmed that oat plants with an early, mild infection of BYDV were then protected from the severe effects of late infection by the same and other isolates of BYDV.
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Claims 7
Claim · model-written summary
Symptoms depended on BYDV isolate, inoculation interval, and host variety.
- Taxon
- barley
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Hordeum vulgaret0 - Treatment
- interval between the protective and test inoculatione0
- Interactor
- BYDV
Barley yellow dwarf viruse0pathogen - Outcome
- symptomse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The symptoms obtained depended on the isolate of BYDV, and the interval between the protective and test inoculation and the variety of host plant.”
t0“barley yellow dwarf virus”
Claim · model-written summary
Two BYDV isolates completely protected Clintland 60 oat plants.
- Taxon
- oats
Avena sativae0 - Material
- Clintland 60e0
- Treatment
- Two of the isolatese0
- Interactor
- isolatese0pathogen
- Outcome
- complete protectione0
- Direction
- complete protectione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two of the isolates showed complete protection in Macrosiphum avenae (F.) aphids and in Clintland 60 oats plants.”
Claim · model-written summary
The two protective isolates differed in pathogenicity and vector specificity.
- Taxon
- barleyHordeum vulgaret0
- Interactor
- isolatese0pathogen
- Outcome
- pathogenicity and in vector specificitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These 2 isolates differed in pathogenicity and in vector specificity.”
t0“barley yellow dwarf virus”
Claim · model-written summary
Interference included protection and synergism in the tests.
- Taxon
- barleyHordeum vulgaret0
- Interactor
- barley yellow dwarf virusBarley yellow dwarf virust0pathogen
- Outcome
- interference (protection and synergism)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Although interference (protection and synergism) was found in these tests”
t0“barley yellow dwarf virus”
Claim · model-written summary
The authors judged interference of little value for determining relationships among BYDV isolates.
- Taxon
- barleyHordeum vulgaret0
- Interactor
- BYDVBarley yellow dwarf viruse0pathogen
- Outcome
- little value in determining relations between isolates of BYDVe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it appears to be of little value in determining relations between isolates of BYDV.”
t0“barley yellow dwarf virus”
Claim · model-written summary
The authors favored treating BYDV as one virus with a broad grass and cereal host range.
- Taxon
- barleyHordeum vulgaree0
- Interactor
- barley yellow dwarf virusBarley yellow dwarf viruse0pathogen
- Outcome
- only one barley yellow dwarf virus with a wide host range in grasses and cerealse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It is thought best at present to assume that there is only one barley yellow dwarf virus with a wide host range in grasses and cereals and differing in adaptation for transmission by several aphid species.”
Claim · model-written summary
Early mild BYDV infection protected oat plants against severe effects of later infection by the same or other isolates.
- Taxon
- oatAvena sativae0
- Treatment
- early, mild infection of BYDVe0
- Interactor
- BYDVBarley yellow dwarf viruse0pathogen
- Outcome
- severe effects of late infectione0
- Direction
- protectede0
- Comparator
- late infectione0
- Setting
- glass‐housee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Several glass‐house trials confirmed that oat plants with an early, mild infection of BYDV were then protected from the severe effects of late infection by the same and other isolates of BYDV.”
The same questions in other papers
Hordeum vulgare · Barley yellow dwarf virus · Avena sativa (oats)Positive and negative results
1 paper in the same direction as this paper · 6 in the opposite direction
- no effect
- negative
- negative
4 papers more in this group
See all 8 papers →infection · Barley yellow dwarf virus · Avena sativa (oats)Positive and negative results
6 in the opposite direction
- no effect
- negative
- negative
3 papers more in this group
See all 7 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.