Abstract
Abstract The content of Barley yellow dwarf virus (BYDV) in roots and leaves of barley seedling plants differing in their level of resistance was assessed by quantitative ELISA 1–42 days after inoculation with the strain of BYDV (PAV). High virus accumulation in roots and low concentration in leaves was characteristic of the period 9–15 days after inoculation. In leaves, the differences in virus content between resistant and susceptible genotypes became significant after 15 days and resistance to virus accumulation was better expressed 30–39 days after inoculation. Roots of resistant materials exhibited evident retardation of virus accumulation and the greatest difference in virus content between resistant and susceptible plants was detected 9 days after inoculation. By these criteria, the selected winter and spring barley cultivars and lines (in total 44 materials) fell in to five groups according to field reactions and the presence or absence of the Yd2 resistance gene. There were highly significant and positive relations between ELISA values and 5‐year field data on symptomatic reactions and grain‐yield reductions due to infection. Using the described method, resistant and moderately resistant genotypes (both Yd2 and non‐ Yd2 ) were significantly differentiated from susceptible genotypes. The possible use of this method in screening for BYDV resistance is discussed.
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Claims 8
Claim · model-written summary
In roots, high BYDV accumulation was characteristic of the period 9–15 days after inoculation.
- Taxon
- barley
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Hordeum vulgaree0 - Organ / stage
- rootse2
- Interactor
- BYDV
Barley yellow dwarf viruse1pathogen - Outcome
- virus accumulatione2
- Direction
- Highe2
- Qualifier
- 9–15 days after inoculatione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“barley seedling plants”
e1“Barley yellow dwarf virus (BYDV) in roots and leaves”
e2“High virus accumulation in roots and low concentration in leaves was characteristic of the period 9–15 days after inoculation”
Claim · model-written summary
In leaves, BYDV concentration was low during the period 9–15 days after inoculation.
- Taxon
- barleyHordeum vulgaree0
- Organ / stage
- leavese2
- Interactor
- BYDVBarley yellow dwarf viruse1pathogen
- Outcome
- concentratione2
- Direction
- lowe2
- Qualifier
- 9–15 days after inoculatione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“barley seedling plants”
e1“Barley yellow dwarf virus (BYDV) in roots and leaves”
e2“High virus accumulation in roots and low concentration in leaves was characteristic of the period 9–15 days after inoculation”
Claim · model-written summary
In leaves, virus content differed between resistant and susceptible genotypes significantly after 15 days after inoculation.
- Taxon
- barleyHordeum vulgaree0
- Material
- resistant and susceptible genotypese3
- Organ / stage
- leavese3
- Interactor
- BYDVBarley yellow dwarf viruse1pathogen
- Outcome
- virus contente3
- Qualifier
- after 15 dayse3
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“barley seedling plants”
e1“Barley yellow dwarf virus (BYDV) in roots and leaves”
e3“In leaves, the differences in virus content between resistant and susceptible genotypes became significant after 15 days”
Claim · model-written summary
In roots, resistant barley materials showed evident retardation of virus accumulation.
- Taxon
- barleyHordeum vulgaree0
- Material
- resistant materialse4
- Organ / stage
- Rootse4
- Outcome
- virus accumulatione4
- Direction
- retardatione4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“barley seedling plants”
e4“Roots of resistant materials exhibited evident retardation of virus accumulation and the greatest difference in virus content between resistant and susceptible plants was detected 9 days after inoculation”
Claim · model-written summary
In roots, the greatest difference in virus content between resistant and susceptible barley was detected 9 days after inoculation.
- Taxon
- barleyHordeum vulgaree0
- Material
- resistant and susceptible plantse4
- Organ / stage
- Rootse4
- Outcome
- virus contente4
- Direction
- greateste4
- Qualifier
- 9 days after inoculatione4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“barley seedling plants”
e4“Roots of resistant materials exhibited evident retardation of virus accumulation and the greatest difference in virus content between resistant and susceptible plants was detected 9 days after inoculation”
Claim · model-written summary
The selected winter and spring barley cultivars and lines (44 materials) fell into five groups by field reaction and the Yd2 resistance gene.
- Taxon
- barleyHordeum vulgaree0
- Material
- winter and spring barley cultivars and linese6
- Gene
- Yd2e6
- Outcome
- five groupse6
- Value
- 44 materialse6
- Qualifier
- according to field reactions and the presence or absence of the Yd2 resistance genee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“barley seedling plants”
e6“the selected winter and spring barley cultivars and lines (in total 44 materials) fell in to five groups according to field reactions and the presence or absence of the Yd2 resistance gene”
Claim · model-written summary
Virus content measured by ELISA had highly significant positive relations with 5-year field symptomatic reactions and grain-yield reductions.
- Taxon
- barleyHordeum vulgaree0
- Interactor
- BYDVBarley yellow dwarf viruse1pathogen
- Outcome
- symptomatic reactionse2
- Direction
- positivee7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“barley seedling plants”
e1“Barley yellow dwarf virus (BYDV) in roots and leaves”
e7“positive relations between ELISA values and”
e2“on symptomatic reactions and grain”
Claim · model-written summary
The ELISA method significantly differentiated resistant and moderately resistant barley genotypes from susceptible genotypes.
- Taxon
- barleyHordeum vulgaree0
- Material
- resistant and moderately resistant genotypese1
- Outcome
- differentiatede2
- Comparator
- susceptible genotypese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“barley seedling plants”
e1“Using the described method, resistant and moderately resistant genotypes”
e2“were significantly differentiated from susceptible genotypes”