Abstract
In order to investigate the effect of application rate of cadmium on tree growth and cadmium accumulation in fruit tree, one year old pear trees were transplanted into plastic container containing sand. Then, pear trees were cultured with nutrient solution containing 1 to 20 mg･L-1 of cadmium. Growth of shoot was severely suppressed by elevated cadmium concentrations. Decrease of dry weight of old roots with thicker than 2 mm in diameter was more severely affected by elevated cadmium concentrations in nutrient solution than those of other parts of pear trees. Elevated cadmium concentrations in nutrient solution resulted in increase of tissue contents and the highest concentration was observed in young roots followed by old roots, barks, woods, and leaves. The cadmium contents in young roots were much higher than those of other parts of pear trees. Cadmium detected in young roots was 53～82% of total amounts accumulated in pear trees. Uniform chlorosis in newly developed leaves and defoliation, localized necrosis in bark and necrosis in buds were observed in treatments of elevated cadmium concentrations.
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Claims 7
Claim · model-written summary
Elevated cadmium concentrations severely suppressed shoot growth of pear trees.
- Taxon
- pear trees
_Poirier_Fleurs_et_feuilles.jpg?width=60)
Pyrus communise0 - Treatment
- elevated cadmium concentrationse1
- Outcome
- Growth of shoote1
- Direction
- severely suppressede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Poirier_Fleurs_et_feuilles.jpg?width=500)
Verbatim
e0“one year old pear trees were transplanted into plastic container containing sand”
e1“Growth of shoot was severely suppressed by elevated cadmium concentrations”
Claim · model-written summary
Elevated cadmium concentrations more severely decreased the dry weight of old roots than that of other parts of pear trees.
- Taxon
- pear treesPyrus communise2
- Organ / stage
- old rootse2
- Treatment
- elevated cadmium concentrations in nutrient solutione2
- Outcome
- dry weight of old rootse2
- Direction
- Decreasee2
- Comparator
- other parts of pear treese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Decrease of dry weight of old roots with thicker than 2 mm in diameter was more severely affected by elevated cadmium concentrations in nutrient solution than those of other parts of pear trees”
Claim · model-written summary
Elevated cadmium concentrations in nutrient solution increased cadmium contents in tissues of pear trees.
- Taxon
- pear treesPyrus communise0
- Treatment
- Elevated cadmium concentrations in nutrient solutione3
- Outcome
- tissue contentse3
- Direction
- increasee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“one year old pear trees were transplanted into plastic container containing sand”
e3“Elevated cadmium concentrations in nutrient solution resulted in increase of tissue contents and the highest concentration was observed in young roots followed by old roots, barks, woods, and leaves”
Claim · model-written summary
Cadmium contents in young roots of pear trees were much higher than in other parts.
- Taxon
- pear treesPyrus communise4
- Organ / stage
- young rootse4
- Outcome
- cadmium contentse4
- Direction
- much highere4
- Comparator
- other parts of pear treese4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The cadmium contents in young roots were much higher than those of other parts of pear trees”
Claim · model-written summary
Cadmium detected in young roots was 53～82% of the total cadmium accumulated in pear trees.
- Taxon
- pear treesPyrus communise5
- Organ / stage
- young rootse5
- Outcome
- Cadmium detected in young rootse5
- Value
- 53～82%e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Cadmium detected in young roots was 53～82% of total amounts accumulated in pear trees”
Claim · model-written summary
Elevated cadmium concentrations caused uniform chlorosis in newly developed leaves and defoliation of pear trees.
- Taxon
- pear treesPyrus communise0
- Organ / stage
- newly developed leavese6
- Treatment
- elevated cadmium concentrationse6
- Outcome
- Uniform chlorosis in newly developed leaves and defoliatione6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“one year old pear trees were transplanted into plastic container containing sand”
e6“Uniform chlorosis in newly developed leaves and defoliation, localized necrosis in bark and necrosis in buds were observed in treatments of elevated cadmium concentrations”
Claim · model-written summary
Elevated cadmium concentrations caused localized necrosis in bark and necrosis in buds of pear trees.
- Taxon
- pear treesPyrus communise0
- Organ / stage
- barke6
- Treatment
- elevated cadmium concentrationse6
- Outcome
- localized necrosis in bark and necrosis in budse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“one year old pear trees were transplanted into plastic container containing sand”
e6“Uniform chlorosis in newly developed leaves and defoliation, localized necrosis in bark and necrosis in buds were observed in treatments of elevated cadmium concentrations”
The same questions in other papers
fertilization · growth · Pyrus communis (pear)Positive and negative results
1 paper in the same direction as this paper · 23 in the opposite direction
- positive
- positive
- positive
21 papers more in this group
See all 25 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.