Abstract
Variation in quercetin content was investigated in field-cured onions (Allium cepa L.) that had been supplied with different nitrogen fertilizer levels and lifted at different developmental stages. Quercetin content varied significantly between years and was well correlated to global radiation in August. Field curing generally resulted in significant increases in quercetin content compared to levels at lifting. Nitrogen fertilizer level did not affect quercetin content, suggesting that nitrogen leakage from soil may be minimized without effects on flavonol content. Lifting time had minor effects on quercetin content in field-cured onions. Cultivar differences in quercetin content were significant but not consistent in all years. Quercetin content increased significantly less in dark environments compared to field curing, but some quercetin synthesis occurred regardless of light. Field curing with or without foliage still attached did not affect quercetin content, suggesting that no transportation from the foliage to the scales occurred.
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Claims 9
Claim · model-written summary
Onion quercetin differed by year.
- Taxon
- onions
Allium cepat0 - Outcome
- Quercetin contente0
Not reportedSettingDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Quercetin content varied significantly between years”
t0“Field-Cured Onions”
Claim · model-written summary
Onion quercetin correlated with August global radiation.
- Taxon
- OnionsAllium cepat0
- Outcome
- Quercetin contente0
- Setting
- Auguste0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Quercetin content varied significantly between years and was well correlated to global radiation in August”
t0“Onions”
Claim · model-written summary
Field curing increased onion quercetin compared with lifting.
- Taxon
- OnionsAllium cepat0
- Treatment
- Field curinge0
- Outcome
- quercetin contente0
- Direction
- increasese0
- Comparator
- levels at liftinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field curing generally resulted in significant increases in quercetin content compared to levels at lifting”
t0“Onions”
Claim · model-written summary
Nitrogen fertilizer level did not affect onion quercetin.
- Taxon
- OnionsAllium cepat0
- Treatment
- Nitrogen fertilizer levele0
- Outcome
- quercetin contente0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen fertilizer level did not affect quercetin content”
t0“Onions”
Claim · model-written summary
Lifting time had minor effects on onion quercetin.
- Taxon
- onionsAllium cepae0
- Treatment
- Lifting timee0
- Outcome
- quercetin contente0
- Direction
- minor effectse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lifting time had minor effects on quercetin content in field-cured onions”
Claim · model-written summary
Onion cultivar differences in quercetin were significant but varied by year.
- Taxon
- OnionsAllium cepat0
- Material
- Cultivare0
- Outcome
- quercetin contente0
- Qualifier
- not consistent in all yearse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cultivar differences in quercetin content were significant but not consistent in all years”
t0“Onions”
Claim · model-written summary
Onion quercetin increased less in darkness than with field curing.
- Taxon
- OnionsAllium cepat0
- Treatment
- dark environmentse0
- Outcome
- Quercetin contente0
- Direction
- increased significantly lesse0
- Comparator
- field curinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Quercetin content increased significantly less in dark environments compared to field curing”
t0“Onions”
Claim · model-written summary
Some onion quercetin synthesis occurred regardless of light.
- Taxon
- OnionsAllium cepat0
- Outcome
- quercetin synthesise0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“some quercetin synthesis occurred regardless of light”
t0“Onions”
Claim · model-written summary
Retaining foliage during field curing did not change onion quercetin.
- Taxon
- OnionsAllium cepat0
- Treatment
- Field curing with or without foliage still attachede0
- Outcome
- quercetin contente0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field curing with or without foliage still attached did not affect quercetin content”
t0“Onions”
The same questions in other papers
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See all 31 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.