Abstract
The aim of this study is to determine the effect of hydrogen peroxide and thiourea on potato crop (quantum yield (Fv/ Fm), chlorophyll content, tuber diameter, tuber number and total tuber yield). The concentrations of these two chemicals are hydrogen peroxide: 0, 20, 40, 60 and 80 mM, and thiourea : 0, 250, 500, 750 and 1000 mM. The experiment was conducted in the farm of ChottMariem Institute during three months using variety 'Spunta' and arranged in a completely randomized block with three replications. Results show that there is no significant difference in tuber diameter between treatments and among the same treatment. However, tuber yield is significantly increased by 20 % by thiourea (250 mM). Maximum total yield was obtained at this concentration (810 g/plant). In addition, application of thiourea (500 and 750 mM) results in a significantly higher number of tubers number (5.7 and 5.2 respectively). In contrast, treatment with hydrogen peroxide brings about similar tuber yields. Although, application of hydrogen peroxide at low concentration (20 mM), decreases chlorophyll content and stresses plants, application of thiourea increases chlorophyll content, and improve quantum yield especially when it is applied at 250 mM.
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Claims 9
Claim · model-written summary
Tuber diameter did not differ significantly among treatments.
- Taxon
- potato
Solanum tuberosumt0 - Treatment
- treatmentse0
- Outcome
- tuber diametere0
- Direction
- no significant differencee0
- Comparator
- among the same treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there is no significant difference in tuber diameter between treatments and among the same treatment”
t0“Effect of hydrogen peroxide and thiourea on fluorescence and tuberization of potato ( Solanum tuberosum L.)”
Claim · model-written summary
Thiourea at 250 mM increased potato tuber yield by 20%.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- thiourea (250 mM)e0
- Outcome
- tuber yielde0
- Direction
- increasede0
- Value
- 20 %e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tuber yield is significantly increased by 20 % by thiourea (250 mM)”
t0“Effect of hydrogen peroxide and thiourea on fluorescence and tuberization of potato ( Solanum tuberosum L.)”
Claim · model-written summary
The maximum potato yield at 250 mM thiourea was 810 g/plant.
- Taxon
- potatoSolanum tuberosumt0
- Outcome
- total yielde0
- Direction
- Maximume0
- Value
- 810 g/plante0
- Qualifier
- this concentratione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maximum total yield was obtained at this concentration (810 g/plant)”
t0“Effect of hydrogen peroxide and thiourea on fluorescence and tuberization of potato ( Solanum tuberosum L.)”
Claim · model-written summary
Thiourea at 500 mM increased potato tuber number to 5.7.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- thiourea (500e0
- Outcome
- number of tuberse0
- Direction
- highere0
- Value
- 5.7e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of thiourea (500 and 750 mM) results in a significantly higher number of tubers number (5.7 and 5.2 respectively)”
t0“Effect of hydrogen peroxide and thiourea on fluorescence and tuberization of potato ( Solanum tuberosum L.)”
Claim · model-written summary
Thiourea at 750 mM increased potato tuber number to 5.2.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of thiourea (500 and 750 mM) results in a significantly higher number of tubers number (5.7 and 5.2 respectively)”
t0“Effect of hydrogen peroxide and thiourea on fluorescence and tuberization of potato ( Solanum tuberosum L.)”
Claim · model-written summary
Hydrogen peroxide treatments produced similar potato tuber yields.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- hydrogen peroxidee0
- Outcome
- tuber yieldse0
- Direction
- similare0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“treatment with hydrogen peroxide brings about similar tuber yields”
t0“Effect of hydrogen peroxide and thiourea on fluorescence and tuberization of potato ( Solanum tuberosum L.)”
Claim · model-written summary
Hydrogen peroxide at 20 mM decreased potato chlorophyll content and stressed the plants.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- hydrogen peroxide at low concentration (20 mM)e0
- Outcome
- chlorophyll content and stresses plantse0
- Direction
- decreasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of hydrogen peroxide at low concentration (20 mM), decreases chlorophyll content and stresses plants”
t0“Effect of hydrogen peroxide and thiourea on fluorescence and tuberization of potato ( Solanum tuberosum L.)”
Claim · model-written summary
Thiourea increased potato chlorophyll content.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- thioureae0
- Outcome
- chlorophyll contente0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of thiourea increases chlorophyll content”
t0“Effect of hydrogen peroxide and thiourea on fluorescence and tuberization of potato ( Solanum tuberosum L.)”
Claim · model-written summary
Thiourea improved potato quantum yield, especially at 250 mM.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- thioureae0
- Outcome
- quantum yielde0
- Direction
- improvee0
- Qualifier
- especially when it is applied at 250 mMe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of thiourea increases chlorophyll content, and improve quantum yield especially when it is applied at 250 mM”
t0“Effect of hydrogen peroxide and thiourea on fluorescence and tuberization of potato ( Solanum tuberosum L.)”
The same questions in other papers
hydrogen peroxide · physiology: pigments · Solanum tuberosum (potato)Results differ
2 in the opposite direction
- positive
- positive
hydrogen peroxide · yield · Solanum tuberosum (potato)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- no effect
thiourea · physiology: pigments · Solanum tuberosum (potato)Results agree
1 paper in the same direction as this paper
- positive
thiourea · yield · Solanum tuberosum (potato)Results agree
5 papers in the same direction as this paper
- positive
- positive
- positive
2 papers more in this group
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.