Abstract
Aphid transmissions to sugar beet seedlings from yellowed sugar beet leaves collected from commercial fields in East Anglia during the summers of 1955, 1956 and 1957, showed the occurrence of two yellowing viruses. One was sugar beet yellows virus (SBYV) and produced vein‐etch and yellowing symptoms on beet seedlings in the glasshouse; the other produced yellowing but no etch. These two viruses were apparently unrelated, so that sugar beet tolerant to one of them would not necessarily be tolerant to the other. The second virus, called ‘sugar beet mild yellowing virus’ (SBMYV), decreased the root yield of sugar beet plants grown under glass, by as much as did the milder SBYV strains, but less than did the severe SBYV strains. The proportions of the two viruses in the samples differed from year to year and from place to place.
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Claims 6
Claim · model-written summary
Aphid transmission from yellowed sugar beet leaves revealed two yellowing viruses.
- Taxon
- sugar beet
Beta vulgaris subsp. vulgarise0 - Outcome
- occurrence of two yellowing virusese0
- Setting
- East Angliae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aphid transmissions to sugar beet seedlings from yellowed sugar beet leaves collected from commercial fields in East Anglia during the summers of 1955, 1956 and 1957, showed the occurrence of two yellowing viruses”
Claim · model-written summary
Sugar beet yellows virus produced vein‐etch and yellowing symptoms on beet seedlings in the glasshouse.
- Taxon
- SUGAR BEETBeta vulgaris subsp. vulgarist0
- Interactor
- sugar beet yellows virusBeet yellows viruse0pathogen
- Outcome
- vein‐etch and yellowing symptomse0
- Setting
- glasshousee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sugar beet yellows virus (SBYV) and produced vein‐etch and yellowing symptoms on beet seedlings in the glasshouse”
t0“SUGAR BEET YELLOWS”
Claim · model-written summary
The other virus produced yellowing but no etch in beet seedlings.
- Taxon
- SUGAR BEETBeta vulgaris subsp. vulgarist0
- Interactor
- sugar beet mild yellowing viruse1pathogen
- Outcome
- yellowing but no etche0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the other produced yellowing but no etch”
e1“The second virus, called ‘sugar beet mild yellowing virus’ (SBMYV)”
t0“SUGAR BEET YELLOWS”
Claim · model-written summary
The two yellowing viruses appeared unrelated, so tolerance to one did not imply tolerance to the other.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise0
- Outcome
- tolerant to one of them would not necessarily be tolerant to the othere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These two viruses were apparently unrelated, so that sugar beet tolerant to one of them would not necessarily be tolerant to the other”
Claim · model-written summary
Sugar beet mild yellowing virus reduced sugar beet root yield as much as milder SBYV strains, but less than severe strains.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise0
- Treatment
- sugar beet mild yellowing viruse0
- Interactor
- sugar beet mild yellowing viruse0pathogen
- Outcome
- root yielde0
- Direction
- decreasede0
- Qualifier
- less than did the severe SBYV strainse0
- Comparator
- milder SBYV strainse0
- Setting
- under glasse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The second virus, called ‘sugar beet mild yellowing virus’ (SBMYV), decreased the root yield of sugar beet plants grown under glass, by as much as did the milder SBYV strains, but less than did the severe SBYV strains”
Claim · model-written summary
Proportions of the two viruses varied by year and place.
- Taxon
- SUGAR BEETBeta vulgaris subsp. vulgarist0
- Outcome
- proportions of the two virusese0
- Direction
- differede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The proportions of the two viruses in the samples differed from year to year and from place to place”
t0“SUGAR BEET YELLOWS”
The same questions in other papers
Beta vulgaris subsp. vulgaris · yield · Beta vulgaris (beet)Positive and negative results
2 papers in the same direction as this paper · 39 in the opposite direction
- positive
- positive
- positive
38 papers more in this group
See all 42 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.