Abstract
SUMMARY Leaves of virus‐free sugar‐beet plants rarely became infected with Alternaria spp. in two field experiments at Cambridge in 1965. Infection with beet yellows virus (BYV) increased susceptibility of plants to Alternaria only slightly but infection with beet mild yellowing virus (BMYV) increased it greatly. There was a close association between the severity of Alternaria symptoms, shown by different breeding lines and varieties of sugar beet, and the losses of sugar yield which they sustained after infection with BYV and BMYV. Many lines and varieties were resistant to Alternaria even when infected with BMYV and their resistance seemed to be inherited as a dominant character. Individual plants of any one line or variety differed greatly in resistance to Alternaria , suggesting that selection should improve the present level of resistance. Spraying the foliage of Alternaria ‐susceptible varieties with fungicides had little effect on the severity of Alternaria symptoms or on sugar yield. This was probably because the wet summer of 1965 was ideal for the spread of Alternaria and because rain washed the fungicide deposits from the sprayed leaves.
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Claims 10
Claim · model-written summary
Virus-free sugar-beet leaves rarely had Alternaria infection.
- Taxon
- sugar‐beet
Beta vulgaris subsp. vulgarise0 - Interactor
- Alternaria spp.
Alternariae0pathogene1 - Outcome
- rarely became infected with Alternaria spp.e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaves of virus‐free sugar‐beet plants rarely became infected with Alternaria spp.”
e1“Alternaria species”
Claim · model-written summary
BYV infection slightly increased plant susceptibility to Alternaria.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- Infection with beet yellows virus (BYV)e0
- Interactor
- AlternariaAlternariae0pathogent0
- Second interactor
- beet yellows virus (BYV)Beet yellows viruse0pathogent0
- Outcome
- susceptibility of plants to Alternariae0
- Direction
- increasede0
- Qualifier
- only slightlye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Infection with beet yellows virus (BYV) increased susceptibility of plants to Alternaria only slightly”
t0“Alternaria species on leaves of sugar beet infected with yellowing viruses”
Claim · model-written summary
BMYV infection greatly increased plant susceptibility to Alternaria.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- infection with beet mild yellowing virus (BMYV)e0
- Interactor
- AlternariaAlternariae1pathogent0
- Second interactor
- beet mild yellowing virus (BMYV)Beet mild yellowing viruse0pathogent0
- Outcome
- susceptibility of plants to Alternariae1
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“infection with beet mild yellowing virus (BMYV) increased it greatly.”
e1“increased susceptibility of plants to Alternaria”
t0“Alternaria species on leaves of sugar beet infected with yellowing viruses”
Claim · model-written summary
Alternaria symptom severity was closely associated with sugar-yield loss after virus infection.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise0
- Material
- different breeding lines and varieties of sugar beete0
- Interactor
- AlternariaAlternariae0pathogent0
- Outcome
- losses of sugar yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was a close association between the severity of Alternaria symptoms, shown by different breeding lines and varieties of sugar beet, and the losses of sugar yield which they sustained after infection with BYV and BMYV.”
t0“Alternaria species”
Claim · model-written summary
Many lines and varieties resisted Alternaria despite BMYV infection.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Material
- lines and varietiese0
- Interactor
- AlternariaAlternariae0pathogent0
- Second interactor
- BMYVBeet mild yellowing viruse0pathogent0
- Outcome
- resistant to Alternariae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Many lines and varieties were resistant to Alternaria even when infected with BMYV”
t0“Alternaria species on leaves of sugar beet infected with yellowing viruses”
Claim · model-written summary
Alternaria resistance appeared dominantly inherited.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Interactor
- AlternariaAlternariat0pathogen
- Outcome
- resistance seemed to be inherited as a dominant charactere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“their resistance seemed to be inherited as a dominant character”
t0“Alternaria species on leaves of sugar beet infected with yellowing viruses”
Claim · model-written summary
Individual plants within a line or variety differed greatly in Alternaria resistance.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Material
- any one line or varietye0
- Interactor
- AlternariaAlternariae0pathogent0
- Outcome
- resistance to Alternariae0
- Direction
- differed greatlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Individual plants of any one line or variety differed greatly in resistance to Alternaria”
t0“Alternaria species on leaves of sugar beet infected with yellowing viruses”
Claim · model-written summary
The authors suggested selection could improve Alternaria resistance.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Interactor
- AlternariaAlternariat0pathogen
- Outcome
- selection should improve the present level of resistancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“suggesting that selection should improve the present level of resistance”
t0“Alternaria species on leaves of sugar beet infected with yellowing viruses”
Claim · model-written summary
Fungicide sprays had little effect on Alternaria symptom severity.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- Spraying the foliage of Alternaria ‐susceptible varieties with fungicidese0
- Interactor
- AlternariaAlternariae0pathogent0
- Outcome
- severity of Alternaria symptomse0
- Direction
- little effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spraying the foliage of Alternaria ‐susceptible varieties with fungicides had little effect on the severity of Alternaria symptoms or on sugar yield.”
t0“Alternaria species on leaves of sugar beet infected with yellowing viruses”
Claim · model-written summary
Fungicide sprays had little effect on sugar yield.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- Spraying the foliage of Alternaria ‐susceptible varieties with fungicidese0
- Interactor
- AlternariaAlternariae0pathogent0
- Outcome
- sugar yielde0
- Direction
- little effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spraying the foliage of Alternaria ‐susceptible varieties with fungicides had little effect on the severity of Alternaria symptoms or on sugar yield.”
t0“Alternaria species on leaves of sugar beet infected with yellowing viruses”
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See all 67 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.