Abstract
[Objective] The reference for the application of the rare earth compound-cerium nitrate in agriculture was provided through the investigation of the effects of its different concentrations pumpkin plantlet growth.[Method] The number of leaf,plant height,fresh weight,the content of chlorophyll and other indicators of pumpkin plantlet cultured in vitro in the MS medium with the different concentrations of cerium nitrate were tested to study its impact on pumpkin plantlet growth.[Results] There was no significant efficiency on pumpkin plantlet growth when the concentration of cerium nitrate was below 10.0 μg/ml and the fresh weight and the content chlorophyll a and chlorophyll b of pumpkin plantlet were slightly increased.The peak value of the content of chlorophyll,the fresh weight growth and the plant height of pumpkin plantlet were reached while its concentration was 10.0 μg/ml.The poisoning effect on pumpkin plantlet growth could be formed when its concentration was over 10.0 μg/ml and the heavier the poisoning effect was,the higher its concentration was.All of pumpkin plantlets were death when its concentration was 200.0 μg/ml.[Conclusion] The effect of cerium nitrate on pumpkin plantlet depended on its concentration.The low-concentration(10.0 μg/ml) was contributed to plantlet growth and development and high concentration could had the poisoning effect on plantlet growth.
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Claims 7
Claim · model-written summary
Below 10.0 μg/ml, cerium nitrate had no significant effect on overall plantlet growth.
- Taxon
- Pumpkint0
- Treatment
- cerium nitrate was below 10.0 μg/mle0
- Outcome
- pumpkin plantlet growthe0
- Direction
- no significant efficiencye0
Not reportedComparator
Verbatim
e0“There was no significant efficiency on pumpkin plantlet growth when the concentration of cerium nitrate was below 10.0 μg/ml and the fresh weight and the content chlorophyll a and chlorophyll b of pumpkin plantlet were slightly increased.”
t0“Pumpkin”
Claim · model-written summary
Below 10.0 μg/ml, cerium nitrate slightly increased plantlet fresh weight and chlorophyll a and b.
- Taxon
- Pumpkint0
- Treatment
- cerium nitrate was below 10.0 μg/mle0
- Outcome
- fresh weight and the content chlorophyll a and chlorophyll be0
- Direction
- slightly increasede0
Not reportedComparator
Verbatim
e0“There was no significant efficiency on pumpkin plantlet growth when the concentration of cerium nitrate was below 10.0 μg/ml and the fresh weight and the content chlorophyll a and chlorophyll b of pumpkin plantlet were slightly increased.”
t0“Pumpkin”
Claim · model-written summary
At 10.0 μg/ml, chlorophyll content peaked.
Not reportedComparator
Verbatim
e0“The peak value of the content of chlorophyll,the fresh weight growth and the plant height of pumpkin plantlet were reached while its concentration was 10.0 μg/ml.”
t0“Pumpkin”
Claim · model-written summary
At 10.0 μg/ml, fresh weight growth peaked.
Not reportedComparator
Verbatim
e0“The peak value of the content of chlorophyll,the fresh weight growth and the plant height of pumpkin plantlet were reached while its concentration was 10.0 μg/ml.”
t0“Pumpkin”
Claim · model-written summary
At 10.0 μg/ml, plant height peaked.
Not reportedComparator
Verbatim
e0“The peak value of the content of chlorophyll,the fresh weight growth and the plant height of pumpkin plantlet were reached while its concentration was 10.0 μg/ml.”
t0“Pumpkin”
Claim · model-written summary
Above 10.0 μg/ml, cerium nitrate poisoned plantlet growth increasingly as concentration rose.
Verbatim
e0“The poisoning effect on pumpkin plantlet growth could be formed when its concentration was over 10.0 μg/ml and the heavier the poisoning effect was,the higher its concentration was.”
t0“Pumpkin”
Claim · model-written summary
All plantlets died at 200.0 μg/ml.
Not reportedComparatorDirection
Verbatim
e0“All of pumpkin plantlets were death when its concentration was 200.0 μg/ml.”
t0“Pumpkin”
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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.