Abstract
Abstract In greenhouse experiments, applications of Fe and/or Zn in the form of ferrous sulphate and zinc sulphate induced increased chlorophyll ‘a’ and ‘b’ concentrations, indole‐3‐acetic acid, nitrate reductase activity, and dry matter yield of french bean (Phaseoius vulgaris L.) plants. Iron and Zn in combination were more effective in delaying the leaf senescence compared to controls. Chlorophyll destruction was more rapid at the post‐flowering stage in control plants which led to early senescence and reduced photosynthetic duration. A rapid decline in nitrate reductase activity and indole‐3‐acetic acid concentration in control plants after the 50‐day growth stage further induced senescence. Iron alone and in combination of Zn appeared to contribute to the inhibition of senescence in french bean plants.
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Claims 10
Claim · model-written summary
Fe and/or Zn increased chlorophyll ‘a’ and ‘b’ concentrations in French bean.
- Taxon
- French bean
Phaseolus vulgarist0 - Treatment
- Fe and/or Zne0
- Outcome
- chlorophyll ‘a’ and ‘b’ concentrationse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“applications of Fe and/or Zn in the form of ferrous sulphate and zinc sulphate induced increased chlorophyll ‘a’ and ‘b’ concentrations, indole‐3‐acetic acid, nitrate reductase activity, and dry matter yield of french bean (Phaseoius vulgaris L.) plants.”
t0“French bean”
Claim · model-written summary
Fe and/or Zn increased indole‐3‐acetic acid in French bean.
- Taxon
- French beanPhaseolus vulgarist0
- Treatment
- Fe and/or Zne0
- Outcome
- indole‐3‐acetic acide0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“applications of Fe and/or Zn in the form of ferrous sulphate and zinc sulphate induced increased chlorophyll ‘a’ and ‘b’ concentrations, indole‐3‐acetic acid, nitrate reductase activity, and dry matter yield of french bean (Phaseoius vulgaris L.) plants.”
t0“French bean”
Claim · model-written summary
Fe and/or Zn increased nitrate reductase activity in French bean.
- Taxon
- French beanPhaseolus vulgarist0
- Treatment
- Fe and/or Zne0
- Outcome
- nitrate reductase activitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“applications of Fe and/or Zn in the form of ferrous sulphate and zinc sulphate induced increased chlorophyll ‘a’ and ‘b’ concentrations, indole‐3‐acetic acid, nitrate reductase activity, and dry matter yield of french bean (Phaseoius vulgaris L.) plants.”
t0“French bean”
Claim · model-written summary
Fe and/or Zn increased dry matter yield in French bean.
- Taxon
- French beanPhaseolus vulgarist0
- Treatment
- Fe and/or Zne0
- Outcome
- dry matter yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“applications of Fe and/or Zn in the form of ferrous sulphate and zinc sulphate induced increased chlorophyll ‘a’ and ‘b’ concentrations, indole‐3‐acetic acid, nitrate reductase activity, and dry matter yield of french bean (Phaseoius vulgaris L.) plants.”
t0“French bean”
Claim · model-written summary
Combined iron and zinc delayed leaf senescence more effectively than control.
- Taxon
- French beanPhaseolus vulgarist0
- Treatment
- Iron and Zn in combinatione0
- Outcome
- leaf senescencee0
- Direction
- more effective in delayinge0
- Comparator
- controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Iron and Zn in combination were more effective in delaying the leaf senescence compared to controls.”
t0“French bean”
Claim · model-written summary
Control plants showed more rapid Chlorophyll destruction after flowering.
- Taxon
- French beanPhaseolus vulgarist0
- Organ / stage
- post‐flowering stagee0
- Outcome
- Chlorophyll destructione0
- Direction
- more rapide0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chlorophyll destruction was more rapid at the post‐flowering stage in control plants which led to early senescence and reduced photosynthetic duration.”
t0“French bean”
Claim · model-written summary
Control plants showed early senescence after flowering.
- Taxon
- French beanPhaseolus vulgarist0
- Organ / stage
- post‐flowering stagee0
- Outcome
- senescencee0
- Direction
- earlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chlorophyll destruction was more rapid at the post‐flowering stage in control plants which led to early senescence and reduced photosynthetic duration.”
t0“French bean”
Claim · model-written summary
Control plants showed reduced photosynthetic duration after flowering.
- Taxon
- French beanPhaseolus vulgarist0
- Organ / stage
- post‐flowering stagee0
- Outcome
- photosynthetic duratione0
- Direction
- reducede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chlorophyll destruction was more rapid at the post‐flowering stage in control plants which led to early senescence and reduced photosynthetic duration.”
t0“French bean”
Claim · model-written summary
Control plants showed rapid declines in nitrate reductase activity and IAA concentration after day 50.
- Taxon
- French beanPhaseolus vulgarist0
- Outcome
- nitrate reductase activity and indole‐3‐acetic acid concentratione0
- Direction
- rapid declinee0
- Qualifier
- after the 50‐day growth stagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A rapid decline in nitrate reductase activity and indole‐3‐acetic acid concentration in control plants after the 50‐day growth stage further induced senescence.”
t0“French bean”
Claim · model-written summary
Iron alone and with Zn appeared to inhibit French bean senescence.
- Taxon
- French beanPhaseolus vulgarist0
- Treatment
- Iron alone and in combination of Zne0
- Outcome
- senescencee0
- Direction
- inhibitione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Iron alone and in combination of Zn appeared to contribute to the inhibition of senescence in french bean plants.”
t0“French bean”
The same questions in other papers
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- no effect
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1 in the opposite direction
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iron atom · physiology: enzyme activity · Phaseolus vulgaris (common bean)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- negative
- positive
zinc atom · physiology: pigments · Phaseolus vulgaris (common bean)Positive and negative results
4 papers in the same direction as this paper · 2 in the opposite direction
- negative
- negative
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3 papers more in this group
See all 7 papers →iron atom · physiology: pigments · Phaseolus vulgaris (common bean)Positive and negative results
7 papers in the same direction as this paper · 1 in the opposite direction · 1 reporting no difference from an alternative
- positive
- negative
- no effect
6 papers more in this group
See all 10 papers →iron atom · physiology: hormones · Phaseolus vulgaris (common bean)Results agree
1 paper in the same direction as this paper
- positive
zinc atom · quality: postharvest · Phaseolus vulgaris (common bean)Results agree
1 paper in the same direction as this paper
- positive
8 of 9 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.