Abstract
In precise field trials in the years 2004-2008 in the Czech Republic the effect of conditions of location, variety and mineral fertilization on ascorbic acid content (AA) in potatoes with different tuber flesh color was investigated. Significant was the effect of variety. The Marabel variety with the highest AA content (248 mg/kg FW) exceeded other eight varieties by 13.4-74.1%. The Valfi variety, in five-year trials the only variety with purple colored flesh, ranked among analyzed varieties moderately below average. In addition, in the year 2008 the group of seven varieties with purple and red tubers was evaluated and AA content lower by 15.2% compared to the group of varieties with yellow flesh was determined. Also, significant differences were determined between the varieties with coloured tubers; the highest AA content was found in the red-fleshed variety Highland Burgundy Red (234 mg/kg FW). A negative effect on AA content in tubers was observed at increased intensity of N fertilization (at 180 kg N/ha, AA decreased by 12.4% compared to 100 kg N/ha). Enhanced levels of potassium and magnesium fertilization had no effect on the AA content. The effect of location on AA content was not shown; however, from the four locations in average of five years a pronounced trend of the highest content of ascorbic acid on the location Přerov nad Labem with the highest temperature averages during vegetation period of experimental years was determined (by 0.9°C, 2.3°C, and 5.9°C higher compared with other locations).
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Claims 11
Claim · model-written summary
Variety significantly affected potato ascorbic acid content.
- Taxon
- potatoes
Solanum tuberosumt0 - Outcome
- potatoest0
Not reportedMaterialDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant was the effect of variety.”
t0“potatoes”
Claim · model-written summary
Marabel had the highest AA content at 248 mg/kg FW, 13.4-74.1% above eight varieties.
- Taxon
- potatoesSolanum tuberosumt0
- Material
- Marabele0
- Outcome
- AA contente0
- Direction
- higheste0
- Value
- 248 mg/kg FWe0
- Qualifier
- 13.4-74.1%e0
- Comparator
- other eight varietiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Marabel variety with the highest AA content (248 mg/kg FW) exceeded other eight varieties by 13.4-74.1%”
t0“potatoes”
Claim · model-written summary
Valfi ranked moderately below average for AA content.
- Taxon
- potatoesSolanum tuberosumt0
- Material
- Valfie0
- Outcome
- moderately below averagee0
- Direction
- below averagee0
- Comparator
- analyzed varietiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Valfi variety, in five-year trials the only variety with purple colored flesh, ranked among analyzed varieties moderately below average”
t0“potatoes”
Claim · model-written summary
Purple and red tuber varieties had 15.2% lower AA than yellow-flesh varieties.
- Taxon
- potatoesSolanum tuberosumt0
- Material
- group of seven varieties with purple and red tuberse0
- Outcome
- AA contente0
- Direction
- lowere0
- Value
- 15.2%e0
- Comparator
- group of varieties with yellow fleshe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the group of seven varieties with purple and red tubers was evaluated and AA content lower by 15.2% compared to the group of varieties with yellow flesh”
t0“potatoes”
Claim · model-written summary
Coloured-tuber varieties differed significantly in AA content.
- Taxon
- potatoesSolanum tuberosumt0
- Material
- varieties with coloured tuberse0
- Outcome
- significant differencese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant differences were determined between the varieties with coloured tubers”
t0“potatoes”
Claim · model-written summary
Highland Burgundy Red had the highest AA content among coloured varieties, 234 mg/kg FW.
- Taxon
- potatoesSolanum tuberosumt0
- Material
- Highland Burgundy Rede0
- Outcome
- AA contente0
- Direction
- higheste0
- Value
- 234 mg/kg FWe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest AA content was found in the red-fleshed variety Highland Burgundy Red (234 mg/kg FW)”
t0“potatoes”
Claim · model-written summary
Increasing N from 100 to 180 kg N/ha decreased AA content by 12.4%.
- Taxon
- potatoesSolanum tuberosumt0
- Treatment
- 180 kg N/hae0
- Outcome
- AAe0
- Direction
- decreasede0
- Value
- 12.4%e0
- Comparator
- 100 kg N/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at 180 kg N/ha, AA decreased by 12.4% compared to 100 kg N/ha”
t0“potatoes”
Claim · model-written summary
Enhanced potassium fertilization had no effect on AA content.
- Taxon
- potatoesSolanum tuberosumt0
- Treatment
- potassiume0
- Outcome
- AA contente0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Enhanced levels of potassium and magnesium fertilization had no effect on the AA content”
t0“potatoes”
Claim · model-written summary
Enhanced magnesium fertilization had no effect on AA content.
- Taxon
- potatoesSolanum tuberosumt0
- Treatment
- magnesiume0
- Outcome
- AA contente0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Enhanced levels of potassium and magnesium fertilization had no effect on the AA content”
t0“potatoes”
Claim · model-written summary
Location showed no demonstrated effect on AA content.
- Taxon
- potatoesSolanum tuberosumt0
- Outcome
- AA contente0
- Direction
- not showne0
- Setting
- locatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effect of location on AA content was not shown”
t0“potatoes”
Claim · model-written summary
PĹerov nad Labem trended toward the highest AA content.
- Taxon
- potatoesSolanum tuberosumt0
- Outcome
- content of ascorbic acide0
- Direction
- higheste0
- Qualifier
- highest temperature averagese0
- Setting
- PĹerov nad Labeme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a pronounced trend of the highest content of ascorbic acid on the location Přerov nad Labem with the highest temperature averages”
t0“potatoes”
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See all 6 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.