Abstract
Abstract Limited information is available on biological effects of various levels of nickel (Ni) (deficiency to toxicity levels) on growth and yield of certain crops, particularly vegetables. In this sand‐culture study, we investigated the effects of four levels of Ni (0, 50, 100, and 200 μM) on growth, yield, and fruit‐quality attributes of two cucumber cultivars ( Cucumis sativus L. cvs. Super Dominus and Negin) supplied with urea or NH 4 NO 3 as nitrogen source. Addition of 50 μM Ni to the nutrient solution resulted in a significant increase of shoot and root dry‐matter yield of cv. Negin although this increase was greater in the urea‐fed plants than those fed with NH 4 NO 3 . In both cultivars, addition of 50 μM Ni increased urease activity and thereby decreased the urea concentration in the urea treatment. Addition of 100 and 200 μM Ni caused a significant decrease in root and shoot growth of cucumber although this decrease was insignificant for cv. Super Dominus in the 100 μM treatment. The highest fruit yield, total soluble solids (TSS), and fruit firmness were achieved at the 50 μM Ni treatment. Regardless of nitrogen source, Ni addition proportional to the concentration used increased leaf Ni concentration and fruit acid ascorbic concentration. The concentration of Ni required for optimum growth and yield of cucumber varied with cultivars. The level of 50 μM was sufficient for optimum growth of cv. Negin in nutrient‐solution culture while lower concentration of Ni was required for cv. Super Dominus. While the beneficial effects of sufficient levels of Ni on growth and yield of urea‐fed plants was greater than with NH 4 NO 3 ‐fed plants, the toxic effects of Ni in these plants were also greater.
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Claims 14
Claim · model-written summary
Adding 50 μM Ni to the nutrient solution significantly increased shoot and root dry-matter yield of cv. Negin.
- Taxon
- cucumber
Cucumis sativuse0 - Material
- cv. Negine1
- Treatment
- Addition of 50 μM Ni to the nutrient solutione1
- Outcome
- shoot and root dry‐matter yielde1
- Direction
- increasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two cucumber cultivars ( Cucumis sativus L. cvs. Super Dominus and Negin)”
e1“Addition of 50 μM Ni to the nutrient solution resulted in a significant increase of shoot and root dry‐matter yield of cv. Negin although this increase was greater in the urea‐fed plants than those fed with NH 4 NO 3”
Claim · model-written summary
The increase in dry-matter yield from 50 μM Ni was greater in urea-fed than in NH4NO3-fed cucumber.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- ureae1
- Outcome
- increasee1
- Direction
- greatere1
- Comparator
- NH 4 NO 3e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two cucumber cultivars ( Cucumis sativus L. cvs. Super Dominus and Negin)”
e1“Addition of 50 μM Ni to the nutrient solution resulted in a significant increase of shoot and root dry‐matter yield of cv. Negin although this increase was greater in the urea‐fed plants than those fed with NH 4 NO 3”
Claim · model-written summary
Adding 50 μM Ni increased urease activity in both cucumber cultivars.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- addition of 50 μM Nie2
- Outcome
- urease activitye2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two cucumber cultivars ( Cucumis sativus L. cvs. Super Dominus and Negin)”
e2“In both cultivars, addition of 50 μM Ni increased urease activity and thereby decreased the urea concentration in the urea treatment”
Claim · model-written summary
Adding 50 μM Ni decreased urea concentration in the urea treatment.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- addition of 50 μM Nie2
- Outcome
- urea concentratione2
- Direction
- decreasede2
- Qualifier
- in the urea treatmente2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two cucumber cultivars ( Cucumis sativus L. cvs. Super Dominus and Negin)”
e2“In both cultivars, addition of 50 μM Ni increased urease activity and thereby decreased the urea concentration in the urea treatment”
Claim · model-written summary
Adding 100 and 200 μM Ni significantly decreased root and shoot growth of cucumber.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- Addition of 100 and 200 μM Nie3
- Outcome
- root and shoot growthe3
- Direction
- decreasee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two cucumber cultivars ( Cucumis sativus L. cvs. Super Dominus and Negin)”
e3“Addition of 100 and 200 μM Ni caused a significant decrease in root and shoot growth of cucumber although this decrease was insignificant for cv. Super Dominus in the 100 μM treatment”
Claim · model-written summary
The decrease in root and shoot growth at 100 μM Ni was not significant in cv. Super Dominus.
- Taxon
- cucumberCucumis sativuse0
- Material
- cv. Super Dominuse3
- Treatment
- 100 μM treatmente3
- Outcome
- root and shoot growthe3
- Direction
- insignificante3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two cucumber cultivars ( Cucumis sativus L. cvs. Super Dominus and Negin)”
e3“Addition of 100 and 200 μM Ni caused a significant decrease in root and shoot growth of cucumber although this decrease was insignificant for cv. Super Dominus in the 100 μM treatment”
Claim · model-written summary
50 μM Ni gave the highest fruit yield, total soluble solids and fruit firmness.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- 50 μM Ni treatmente5
- Outcome
- fruit yield, total soluble solids (TSS), and fruit firmnesse5
- Direction
- higheste5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two cucumber cultivars ( Cucumis sativus L. cvs. Super Dominus and Negin)”
e5“The highest fruit yield, total soluble solids (TSS), and fruit firmness were achieved at the 50 μM Ni treatment”
Claim · model-written summary
Ni addition increased leaf Ni concentration in cucumber.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- Ni addition proportional to the concentration usede4
- Outcome
- leaf Ni concentratione4
- Direction
- increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two cucumber cultivars ( Cucumis sativus L. cvs. Super Dominus and Negin)”
e4“Regardless of nitrogen source, Ni addition proportional to the concentration used increased leaf Ni concentration and fruit acid ascorbic concentration”
Claim · model-written summary
Ni addition increased fruit ascorbic acid concentration in cucumber.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- Ni addition proportional to the concentration usede4
- Outcome
- fruit acid ascorbic concentratione4
- Direction
- increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two cucumber cultivars ( Cucumis sativus L. cvs. Super Dominus and Negin)”
e4“Regardless of nitrogen source, Ni addition proportional to the concentration used increased leaf Ni concentration and fruit acid ascorbic concentration”
Claim · model-written summary
The Ni concentration required for optimum cucumber growth and yield varied between cultivars.
- Taxon
- cucumberCucumis sativuse0
- Material
- cultivarse6
- Outcome
- concentration of Ni required for optimum growth and yielde6
- Direction
- variede6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two cucumber cultivars ( Cucumis sativus L. cvs. Super Dominus and Negin)”
e6“The concentration of Ni required for optimum growth and yield of cucumber varied with cultivars”
Claim · model-written summary
50 μM Ni was sufficient for optimum growth of cv. Negin in nutrient-solution culture.
- Taxon
- cucumberCucumis sativuse0
- Material
- cv. Negine7
- Treatment
- The level of 50 μMe7
- Outcome
- optimum growthe7
- Direction
- sufficiente7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two cucumber cultivars ( Cucumis sativus L. cvs. Super Dominus and Negin)”
e7“The level of 50 μM was sufficient for optimum growth of cv. Negin in nutrient‐solution culture while lower concentration of Ni was required for cv. Super Dominus”
Claim · model-written summary
A lower Ni concentration was required for optimum growth of cv. Super Dominus.
- Taxon
- cucumberCucumis sativuse0
- Material
- cv. Super Dominuse7
- Outcome
- concentration of Nie7
- Direction
- lowere7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two cucumber cultivars ( Cucumis sativus L. cvs. Super Dominus and Negin)”
e7“The level of 50 μM was sufficient for optimum growth of cv. Negin in nutrient‐solution culture while lower concentration of Ni was required for cv. Super Dominus”
Claim · model-written summary
The beneficial effects of sufficient Ni levels on growth and yield were greater in urea-fed than in NH4NO3-fed cucumber.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- ureae7
- Outcome
- beneficial effects of sufficient levels of Ni on growth and yielde7
- Direction
- greatere7
- Comparator
- NH 4 NO 3e7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two cucumber cultivars ( Cucumis sativus L. cvs. Super Dominus and Negin)”
e7“While the beneficial effects of sufficient levels of Ni on growth and yield of urea‐fed plants was greater than with NH 4 NO 3 ‐fed plants, the toxic effects of Ni in these plants were also greater”
Claim · model-written summary
The toxic effects of Ni were greater in urea-fed than in NH4NO3-fed cucumber.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- ureae7
- Outcome
- toxic effects of Nie7
- Direction
- greatere7
- Comparator
- NH 4 NO 3e7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two cucumber cultivars ( Cucumis sativus L. cvs. Super Dominus and Negin)”
e7“While the beneficial effects of sufficient levels of Ni on growth and yield of urea‐fed plants was greater than with NH 4 NO 3 ‐fed plants, the toxic effects of Ni in these plants were also greater”
The same questions in other papers
nickel atom · yield · Cucumis sativus (cucumber)Results differ
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- no effect
- positive
- positive
nickel atom · growth · Cucumis sativus (cucumber)Results differ
2 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- negative
fertilization · yield · Cucumis sativus (cucumber)Positive and negative results
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- negative
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284 papers more in this group
See all 288 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.