Abstract
Abstract The differential growth response and nickel (Ni) accumulation by two rice varieties grown in Ni‐contaminated soil are investigated. Soil is contaminated with Ni at different levels viz. control (0), 7, 15, 22, 30, and 38 mg kg −1 soil. Two rice varieties viz. Basmati‐2000 (fine variety) and KSK‐133 (coarse variety) are grown in pots containing Ni‐contaminated soil. The plants are harvested at four growth stages with an interval of 15 days. Harvested plants are washed with distilled water to remove aerial deposition. Harvested plants are oven‐dried, weighed, grinded, and digested with di‐acid mixture. The digested samples are analyzed for Ni, zinc (Zn), and manganese (Mn) concentration. The results indicate that the maximum level of Ni (38 mg kg −1 ) inhibits the shoot and root growth. The maximum shoot and root dry weights are observed at lower level of Ni, that is, 7 mg kg −1 . The concentration of Ni in plants increases with increasing Ni levels compared to control while the concentration of Zn and Mn decreases with increasing Ni levels. The maximum concentrations of all elements are recorded at the first harvest which gradually decrease in the subsequent harvests. It is concluded that Basmati‐2000 is tolerant to Ni toxicity compared to KSK‐133.
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Claims 6
Claim · model-written summary
The highest nickel level inhibited rice shoot and root growth.
- Taxon
- rice
Oryza sativat0 - Treatment
- Ni (38 mg kg −1 )e0
- Outcome
- shoot and root growthe0
- Direction
- inhibitse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results indicate that the maximum level of Ni (38 mg kg −1 ) inhibits the shoot and root growth.”
t0“Rice”
Claim · model-written summary
Shoot and root dry weights were greatest at 7 mg kg −1 nickel.
- Taxon
- riceOryza sativat0
- Treatment
- Nie0
- Outcome
- shoot and root dry weightse0
- Direction
- maximume0
- Value
- 7 mg kg −1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The maximum shoot and root dry weights are observed at lower level of Ni, that is, 7 mg kg −1 .”
t0“Rice”
Claim · model-written summary
Rice nickel concentration increased with nickel levels relative to control.
- Taxon
- riceOryza sativat0
- Treatment
- increasing Ni levelse0
- Outcome
- concentration of Ni in plantse0
- Direction
- increasese0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concentration of Ni in plants increases with increasing Ni levels compared to control”
t0“Rice”
Claim · model-written summary
Rice zinc and manganese concentrations decreased with increasing nickel.
- Taxon
- riceOryza sativat0
- Treatment
- increasing Ni levelse0
- Outcome
- concentration of Zn and Mne0
- Direction
- decreasese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the concentration of Zn and Mn decreases with increasing Ni levels”
t0“Rice”
Claim · model-written summary
Element concentrations were highest at first harvest and declined thereafter.
- Taxon
- riceOryza sativat0
- Organ / stage
- first harveste0
- Outcome
- concentrations of all elementse0
- Direction
- decreasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The maximum concentrations of all elements are recorded at the first harvest which gradually decrease in the subsequent harvests.”
t0“Rice”
Claim · model-written summary
Basmati‐2000 was more tolerant of nickel toxicity than KSK‐133.
- Taxon
- riceOryza sativat0
- Material
- Basmati‐2000e0
- Outcome
- tolerant to Ni toxicitye0
- Comparator
- KSK‐133e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It is concluded that Basmati‐2000 is tolerant to Ni toxicity compared to KSK‐133.”
t0“Rice”
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See all 7 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.