copper atom · Physiology: pigments · Helianthus annuus (common sunflower)
4 claims from these papers.
Papers whose results differ, checked claim by claim 1
1 pair of papers on this question report results that differ: an effect in one paper, the opposite effect or no effect in the other. Two model reviewers reading both claims accepted each pair.
Each paper in the lists below is placed by all its claims here taken together, positive if any claim is positive. A pair compares one claim of each paper, so a paper placed on the positive side can also report a decrease or no effect.
- Effect of copper on the dynamics of the increment of plant dry mass and on some physiological processes in sunflower (Helianthus annuus L.) (2013)
no changeCopper dosage did not immediately influence chlorophyll content or nitrate reductase activity in sunflower.
Effects of copper on chlorophyll, proline, protein and abscisic acid level of sunflower (Helianthus annuus L.) seedlings. (2007)decreaseCopper exposure decreased chlorophyll (a+b).
The records name no dose, test system or situation that separates the two claims.Compare the two papers →
How these papers cite each other
None of these papers cites another one here.
- Positive result
- Negative result or no effect
- Citation, pointing to the cited paper
- Citation across the two sides
- Larger circle: more citations overall
Years run left to right. Citations come from the papers’ OpenAlex reference lists. Hover a paper to bring forward its citations; click it to open the paper.
Papers reporting a negative result or no effect 4
- negative
- negative
- negative
- no effect
A paper is on the positive side when any of its claims here is positive. Claims are grouped by organism, treatment and what was measured or targeted. Claims that compare genotypes are left out; a claim about lacking a nutrient counts the other way round in that nutrient’s question. “Results differ” marks a question where two model reviewers, reading both claims, accepted at least one pair of papers whose results differ.
copper atom on Helianthus annuus (common sunflower) against other targets
copper atom · physiology: pigments on other organisms
- Triticum aestivum (wheat)
- Zea mays (maize)
- Oryza sativa (rice)
- Nicotiana tabacum (tobacco)
- Glycine max (soybean)
- Hordeum vulgare (barley)
- Corchorus capsularis (jute)
- Capsicum annuum (sweet pepper)
- Brassica rapa (field mustard)
- Lolium perenne (perennial ryegrass)
- Brassica napus (oilseed rape)
- Solanum lycopersicum (tomato)