Abstract
This study aimed to investigate the effect of iron toxicity in cowpea using physiological and biochemical responses of selected accessions. Fifteen accessions of cowpea were exposed to two treatments of iron using FeSO4 solution (100 mg l-1 and 400 mg l-1) and distilled water at pH 6.2 as control. The results showed that there was a general reduction in germination morphology; germination percentage among the 400 mg l-1 Fe-treated accessions. Seed mortality rates were significantly higher among the 400 mg l-1Fe-treated accessions (> 35 %). Water imbibition capacity and relative mass gained were higher for Fe-treated accessions. Furthermore, significant increase in the total sugar and percentage utilization of sugars was accompanied by an insignificant decrease in chlorophyll a, a significant decrease in chlorophyll b contents and the persistence of foliar chlorosis, among the 400 mg l-1 Fe-treated accessions. MDA levels were significantly increased while proline remained unchanged, mean SOD activity was insignificantly increased, whereas Cat decreased among the 400 mg l-1 Fe-treated accessions. Documentation of these observable changes in physiological and biochemical parameters will be useful in understanding the impact of elevated iron concentrations on the cultivation of cowpea accessions in soils associated with ferruginous ultisols.
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Claims 11
Claim · model-written summary
Iron at 400 mg l-1 generally reduced germination morphology and germination percentage in cowpea accessions
- Taxon
- cowpea
Vigna unguiculatae1 - Material
- Fifteen accessionse1
- Treatment
- 400 mg l-1 Fee2
- Outcome
- germination morphology; germination percentagee2
- Direction
- reductione2
- Comparator
- distilled water at pH 6.2 as controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Fifteen accessions of cowpea were exposed to two treatments of iron using FeSO4 solution (100 mg l-1 and 400 mg l-1) and distilled water at pH 6.2 as control”
e2“there was a general reduction in germination morphology; germination percentage among the 400 mg l-1 Fe-treated accessions”
Claim · model-written summary
Seed mortality rate was significantly higher in cowpea accessions treated with 400 mg l-1 Fe (above 35%)
- Taxon
- cowpeaVigna unguiculatae1
- Material
- Fifteen accessionse1
- Treatment
- 400 mg l-1Fee3
- Outcome
- Seed mortality ratese3
- Direction
- highere3
- Value
- > 35 %e3
- Comparator
- distilled water at pH 6.2 as controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Fifteen accessions of cowpea were exposed to two treatments of iron using FeSO4 solution (100 mg l-1 and 400 mg l-1) and distilled water at pH 6.2 as control”
e3“Seed mortality rates were significantly higher among the 400 mg l-1Fe-treated accessions (> 35 %)”
Claim · model-written summary
Water imbibition capacity and relative mass gained were higher in Fe-treated cowpea accessions
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- Fee4
- Outcome
- Water imbibition capacity and relative mass gainede4
- Direction
- highere4
- Comparator
- distilled water at pH 6.2 as controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Fifteen accessions of cowpea were exposed to two treatments of iron using FeSO4 solution (100 mg l-1 and 400 mg l-1) and distilled water at pH 6.2 as control”
e4“Water imbibition capacity and relative mass gained were higher for Fe-treated accessions”
Claim · model-written summary
Total sugar and percentage utilization of sugars increased significantly in cowpea accessions treated with 400 mg l-1 Fe
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- 400 mg l-1 Fee5
- Outcome
- total sugar and percentage utilization of sugarse5
- Direction
- increasee5
- Comparator
- distilled water at pH 6.2 as controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Fifteen accessions of cowpea were exposed to two treatments of iron using FeSO4 solution (100 mg l-1 and 400 mg l-1) and distilled water at pH 6.2 as control”
e5“significant increase in the total sugar and percentage utilization of sugars was accompanied by an insignificant decrease in chlorophyll a, a significant decrease in chlorophyll b contents and the persistence of foliar chlorosis, among the 400 mg l-1 Fe-treated accessions”
Claim · model-written summary
Chlorophyll a decreased insignificantly in cowpea accessions treated with 400 mg l-1 Fe
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- 400 mg l-1 Fee5
- Outcome
- chlorophyll ae5
- Direction
- decreasee5
- Comparator
- distilled water at pH 6.2 as controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Fifteen accessions of cowpea were exposed to two treatments of iron using FeSO4 solution (100 mg l-1 and 400 mg l-1) and distilled water at pH 6.2 as control”
e5“significant increase in the total sugar and percentage utilization of sugars was accompanied by an insignificant decrease in chlorophyll a, a significant decrease in chlorophyll b contents and the persistence of foliar chlorosis, among the 400 mg l-1 Fe-treated accessions”
Claim · model-written summary
Chlorophyll b content decreased significantly in cowpea accessions treated with 400 mg l-1 Fe
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- 400 mg l-1 Fee5
- Outcome
- chlorophyll b contentse5
- Direction
- decreasee5
- Comparator
- distilled water at pH 6.2 as controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Fifteen accessions of cowpea were exposed to two treatments of iron using FeSO4 solution (100 mg l-1 and 400 mg l-1) and distilled water at pH 6.2 as control”
e5“significant increase in the total sugar and percentage utilization of sugars was accompanied by an insignificant decrease in chlorophyll a, a significant decrease in chlorophyll b contents and the persistence of foliar chlorosis, among the 400 mg l-1 Fe-treated accessions”
Claim · model-written summary
Foliar chlorosis persisted in cowpea accessions treated with 400 mg l-1 Fe
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- 400 mg l-1 Fee5
- Outcome
- the persistence of foliar chlorosise5
- Comparator
- distilled water at pH 6.2 as controle1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Fifteen accessions of cowpea were exposed to two treatments of iron using FeSO4 solution (100 mg l-1 and 400 mg l-1) and distilled water at pH 6.2 as control”
e5“significant increase in the total sugar and percentage utilization of sugars was accompanied by an insignificant decrease in chlorophyll a, a significant decrease in chlorophyll b contents and the persistence of foliar chlorosis, among the 400 mg l-1 Fe-treated accessions”
Claim · model-written summary
MDA levels increased significantly in cowpea accessions treated with 400 mg l-1 Fe
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- 400 mg l-1 Fee6
- Outcome
- MDA levelse6
- Direction
- increasede6
- Comparator
- distilled water at pH 6.2 as controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Fifteen accessions of cowpea were exposed to two treatments of iron using FeSO4 solution (100 mg l-1 and 400 mg l-1) and distilled water at pH 6.2 as control”
e6“MDA levels were significantly increased while proline remained unchanged, mean SOD activity was insignificantly increased, whereas Cat decreased among the 400 mg l-1 Fe-treated accessions”
Claim · model-written summary
Proline content remained unchanged in cowpea accessions treated with 400 mg l-1 Fe
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- 400 mg l-1 Fee6
- Outcome
- prolinee6
- Direction
- remained unchangede6
- Comparator
- distilled water at pH 6.2 as controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Fifteen accessions of cowpea were exposed to two treatments of iron using FeSO4 solution (100 mg l-1 and 400 mg l-1) and distilled water at pH 6.2 as control”
e6“MDA levels were significantly increased while proline remained unchanged, mean SOD activity was insignificantly increased, whereas Cat decreased among the 400 mg l-1 Fe-treated accessions”
Claim · model-written summary
Mean SOD activity increased insignificantly in cowpea accessions treated with 400 mg l-1 Fe
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- 400 mg l-1 Fee6
- Outcome
- mean SOD activitye6
- Direction
- increasede6
- Comparator
- distilled water at pH 6.2 as controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Fifteen accessions of cowpea were exposed to two treatments of iron using FeSO4 solution (100 mg l-1 and 400 mg l-1) and distilled water at pH 6.2 as control”
e6“MDA levels were significantly increased while proline remained unchanged, mean SOD activity was insignificantly increased, whereas Cat decreased among the 400 mg l-1 Fe-treated accessions”
Claim · model-written summary
Cat activity decreased in cowpea accessions treated with 400 mg l-1 Fe
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- 400 mg l-1 Fee6
- Outcome
- Cate6
- Direction
- decreasede6
- Comparator
- distilled water at pH 6.2 as controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Fifteen accessions of cowpea were exposed to two treatments of iron using FeSO4 solution (100 mg l-1 and 400 mg l-1) and distilled water at pH 6.2 as control”
e6“MDA levels were significantly increased while proline remained unchanged, mean SOD activity was insignificantly increased, whereas Cat decreased among the 400 mg l-1 Fe-treated accessions”
The same questions in other papers
iron atom · pest · Vigna unguiculata (cowpea)Positive and negative results
1 in the opposite direction
- positive
iron atom · growth · Vigna unguiculata (cowpea)Positive and negative results
1 paper in the same direction as this paper · 4 in the opposite direction
- 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.