Abstract
A pot culture experiment was conducted to study the effect of various concentrations of cerium provided as cerium nitrate (0.713, 3.568, 17.841, 89.206 and 446.030 µM) on the growth performance, dry matter production, biochemical constituents and enzymatic activity of cowpea plants [Vigna unguiculata (L.) Walp.].Low concentrations of cerium were observed to be beneficial for the test plants.A positive correlation was observed between a lower level of cerium (0.713-17.841 µM) and foliar chlorophyll content, relative yield (dry matter) and nitrate reductase activity.Higher levels of cerium (89.206-446.030µM) significantly increased the proline content and polyphenol oxidase activity of the test plants.Root growth was more adversely affected than shoot growth.
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Claims 7
Claim · model-written summary
Low cerium concentrations benefited cowpea plants.
- Taxon
- cowpea
Vigna unguiculatat0 - Treatment
- Low concentrations of ceriume0
- Outcome
- beneficial for the test plantse0
- Direction
- beneficiale0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Low concentrations of cerium were observed to be beneficial for the test plants.”
t0“cowpea plants [Vigna unguiculata (L.) Walp.]”
Claim · model-written summary
Lower cerium levels were positively correlated with foliar chlorophyll content.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- lower level of cerium (0.713-17.841 µM)e0
- Outcome
- foliar chlorophyll contente0
- Direction
- positive correlatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea plants [Vigna unguiculata (L.) Walp.]”
e0“A positive correlation was observed between a lower level of cerium (0.713-17.841 µM) and foliar chlorophyll content, relative yield (dry matter) and nitrate reductase activity.”
Claim · model-written summary
Lower cerium levels were positively correlated with relative dry-matter yield.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- lower level of cerium (0.713-17.841 µM)e0
- Outcome
- relative yield (dry matter)e0
- Direction
- positive correlatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea plants [Vigna unguiculata (L.) Walp.]”
e0“A positive correlation was observed between a lower level of cerium (0.713-17.841 µM) and foliar chlorophyll content, relative yield (dry matter) and nitrate reductase activity.”
Claim · model-written summary
Lower cerium levels were positively correlated with nitrate reductase activity.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- lower level of cerium (0.713-17.841 µM)e0
- Outcome
- nitrate reductase activitye0
- Direction
- positive correlatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea plants [Vigna unguiculata (L.) Walp.]”
e0“A positive correlation was observed between a lower level of cerium (0.713-17.841 µM) and foliar chlorophyll content, relative yield (dry matter) and nitrate reductase activity.”
Claim · model-written summary
Higher cerium concentrations significantly increased proline content.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- Higher levels of cerium (89.206-446.030µM)e0
- Outcome
- proline contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea plants [Vigna unguiculata (L.) Walp.]”
e0“Higher levels of cerium (89.206-446.030µM) significantly increased the proline content and polyphenol oxidase activity of the test plants.”
Claim · model-written summary
Higher cerium concentrations significantly increased polyphenol oxidase activity.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- Higher levels of cerium (89.206-446.030µM)e0
- Outcome
- polyphenol oxidase activitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea plants [Vigna unguiculata (L.) Walp.]”
e0“Higher levels of cerium (89.206-446.030µM) significantly increased the proline content and polyphenol oxidase activity of the test plants.”
Claim · model-written summary
Cerium affected root growth more adversely than shoot growth.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- various concentrations of cerium provided as cerium nitratee1
- Outcome
- Root growthe0
- Direction
- more adversely affectede0
- Comparator
- shoot growthe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea plants [Vigna unguiculata (L.) Walp.]”
e0“Root growth was more adversely affected than shoot growth.”
e1“effect of various concentrations of cerium provided as cerium nitrate”
The same questions in other papers
nitrogen · growth · Vigna unguiculata (cowpea)Positive and negative results
5 papers in the same direction as this paper · 39 in the opposite direction
- positive
- positive
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41 papers more in this group
See all 45 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.