Abstract
A greenhouse experiment was performed to determine the cadmium (Cd) and lead (Pb) distribution and accumulation in cabbage grown on soil amended with Cd and Pb. The soil was amended with 0, 5, 10, 40, and 80 mg Cd kg−1 in the form of cadmium nitrate [Cd(NO3)2] and with 0, 10, 50, 100, and 500 mg Pb kg−1 in the form of lead nitrate [Pb(NO3)2]. Main soil properties, concentrations of total and diethylenetriaminepentaacetic acid (DTPA)–extractable Pb and Cd in soil, plant growth, and total contents of metals in leaves and roots were measured. The DTPA-extractable Cd and Pb were significantly and positively related to the addition of Cd and Pb respectively. Cadmium accumulation in cabbage plants was increased with the increase of Cd rates in soil whereas Pb accumulation was significantly increased by the greatest dose of Pb only, in comparison to control treatment. The largest proportions of Pb and Cd accumulated in roots. Cabbage plants did not show growth disturbance and the plants showed no symptoms of phytotoxicity as results of Cd and Pb application. On the contrary, fresh weights of leaves and roots were increased significantly in the lowest applications (5 mg Cd kg−1 and 10 mg Pb kg−1) compared to the control treatment. Further additions of Cd and Pb had positive, but not significant, effects on biomass except for the weight of roots. The tolerance of cabbage plants to high concentrations of these metals in soil is discussed.
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Claims 12
Claim · model-written summary
DTPA-extractable soil Cd increased significantly with Cd addition.
Not reportedTaxonComparator
Verbatim
e0“The DTPA-extractable Cd and Pb were significantly and positively related to the addition of Cd and Pb respectively.”
Claim · model-written summary
DTPA-extractable soil Pb increased significantly with Pb addition.
Not reportedTaxonComparator
Verbatim
e0“The DTPA-extractable Cd and Pb were significantly and positively related to the addition of Cd and Pb respectively.”
Claim · model-written summary
Cabbage Cd accumulation increased with soil Cd rates.
- Taxon
- cabbage
Brassica oleracea var. capitatae0 - Treatment
- Cd rates in soile0
- Outcome
- Cadmium accumulatione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cadmium accumulation in cabbage plants was increased with the increase of Cd rates in soil”
Claim · model-written summary
Only the greatest Pb dose significantly increased cabbage Pb accumulation relative to control.
- Taxon
- cabbageBrassica oleracea var. capitatae1
- Treatment
- greatest dose of Pbe0
- Outcome
- Pb accumulatione0
- Direction
- increasede0
- Qualifier
- onlye0
- Comparator
- control treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pb accumulation was significantly increased by the greatest dose of Pb only, in comparison to control treatment”
e1“Cadmium accumulation in cabbage plants”
Claim · model-written summary
The largest Pb proportion accumulated in cabbage roots.
- Taxon
- cabbageBrassica oleracea var. capitatae1
- Organ / stage
- rootse0
- Outcome
- proportions of Pbe0
- Direction
- largeste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The largest proportions of Pb and Cd accumulated in roots.”
e1“Cadmium accumulation in cabbage plants”
Claim · model-written summary
The largest Cd proportion accumulated in cabbage roots.
- Taxon
- cabbageBrassica oleracea var. capitatae1
- Organ / stage
- rootse0
- Outcome
- Cde0
- Direction
- largeste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The largest proportions of Pb and Cd accumulated in roots.”
e1“Cadmium accumulation in cabbage plants”
Claim · model-written summary
Cd application produced neither growth disturbance nor phytotoxicity symptoms in cabbage.
- Taxon
- CabbageBrassica oleracea var. capitatae0
- Treatment
- Cde0
- Outcome
- growth disturbancee0
- Direction
- did not showe0
- Qualifier
- no symptoms of phytotoxicitye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cabbage plants did not show growth disturbance and the plants showed no symptoms of phytotoxicity as results of Cd and Pb application.”
Claim · model-written summary
Pb application produced neither growth disturbance nor phytotoxicity symptoms in cabbage.
- Taxon
- CabbageBrassica oleracea var. capitatae0
- Treatment
- Pb applicatione0
- Outcome
- growth disturbancee0
- Direction
- did not showe0
- Qualifier
- no symptoms of phytotoxicitye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cabbage plants did not show growth disturbance and the plants showed no symptoms of phytotoxicity as results of Cd and Pb application.”
Claim · model-written summary
At 5 mg Cd kg−1 cabbage leaf and root fresh weights increased significantly relative to control.
- Taxon
- CabbageBrassica oleracea var. capitatae1
- Treatment
- 5 mg Cd kg−1e0
- Outcome
- fresh weights of leaves and rootse0
- Direction
- increasede0
- Comparator
- control treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fresh weights of leaves and roots were increased significantly in the lowest applications (5 mg Cd kg−1 and 10 mg Pb kg−1) compared to the control treatment”
e1“Cabbage plants did not show growth disturbance”
Claim · model-written summary
At 10 mg Pb kg−1 cabbage leaf and root fresh weights increased significantly relative to control.
- Taxon
- CabbageBrassica oleracea var. capitatae1
- Treatment
- 10 mg Pb kg−1e0
- Outcome
- fresh weights of leaves and rootse0
- Direction
- increasede0
- Comparator
- control treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fresh weights of leaves and roots were increased significantly in the lowest applications (5 mg Cd kg−1 and 10 mg Pb kg−1) compared to the control treatment”
e1“Cabbage plants did not show growth disturbance”
Claim · model-written summary
Further Cd additions had positive but nonsignificant biomass effects except for root weight.
- Taxon
- CabbageBrassica oleracea var. capitatae1
- Treatment
- Cde0
- Outcome
- biomasse0
- Direction
- positivee0
- Qualifier
- except for the weight of rootse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Further additions of Cd and Pb had positive, but not significant, effects on biomass except for the weight of roots.”
e1“Cabbage plants did not show growth disturbance”
Claim · model-written summary
Further Pb additions had positive but nonsignificant biomass effects except for root weight.
- Taxon
- CabbageBrassica oleracea var. capitatae1
- Treatment
- Pbe0
- Outcome
- biomasse0
- Direction
- positivee0
- Qualifier
- except for the weight of rootse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Further additions of Cd and Pb had positive, but not significant, effects on biomass except for the weight of roots.”
e1“Cabbage plants did not show growth disturbance”
The same questions in other papers
lead atom · growth · Brassica oleracea (wild cabbage)Results differ
1 paper in the same direction as this paper · 4 in the opposite direction
- negative
- negative
- negative
2 papers more in this group
See all 6 papers →cadmium atom · growth · Brassica oleracea (wild cabbage)Results differ
1 paper in the same direction as this paper · 14 in the opposite direction
- negative
- negative
- negative
12 papers more in this group
See all 16 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.