Abstract
Abstract The peroxidase activity in bulbs of 3 onion ( Allium cepa L.) genotypes known to differ in their dormancy characteristics was investigated at 2 stages of bulb development. Peroxidase activity was estimated by the oxidation of p-phenylenediamine, and peroxidase isozymes were studied by acrylamide gel electrophoresis. The peroxidase activity of all 3 genotypes was the same in young bulbs (1.5 – 2 cm, diam), but in mature bulbs peroxidase activity differed with genotype. Bulbs with short dormancy had higher activity, and a greater no. of isozymes than bulbs with long dormancy. A commercial preharvest spray of maleic hydrazide (MH) did not affect peroxidase activity in bulbs of either dormancy type.
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Claims 5
Claim · model-written summary
Young onion bulbs had the same peroxidase activity across three genotypes.
- Taxon
- Onion
Allium cepat0 - Material
- all 3 genotypese0
- Organ / stage
- young bulbse0
- Outcome
- peroxidase activitye0
- Direction
- the samee0
- Qualifier
- 1.5 – 2 cm, diame0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The peroxidase activity of all 3 genotypes was the same in young bulbs (1.5 – 2 cm, diam), but in mature bulbs peroxidase activity differed with genotype.”
t0“Onion Bulbs”
Claim · model-written summary
Mature bulbs differed in peroxidase activity by genotype.
- Taxon
- OnionAllium cepat0
- Material
- genotypee0
- Organ / stage
- mature bulbse0
- Outcome
- peroxidase activitye0
- Direction
- differede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The peroxidase activity of all 3 genotypes was the same in young bulbs (1.5 – 2 cm, diam), but in mature bulbs peroxidase activity differed with genotype.”
t0“Onion Bulbs”
Claim · model-written summary
Short-dormancy bulbs had higher peroxidase activity than long-dormancy bulbs.
- Taxon
- OnionAllium cepat0
- Material
- Bulbs with short dormancye0
- Outcome
- activitye0
- Direction
- highere0
- Comparator
- bulbs with long dormancye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bulbs with short dormancy had higher activity, and a greater no. of isozymes than bulbs with long dormancy.”
t0“Onion Bulbs”
e1“peroxidase activity was estimated by the oxidation of p-phenylenediamine”
Claim · model-written summary
Short-dormancy bulbs had more peroxidase isozymes than long-dormancy bulbs.
- Taxon
- OnionAllium cepat0
- Material
- Bulbs with short dormancye0
- Outcome
- no. of isozymese0
- Direction
- greatere0
- Comparator
- bulbs with long dormancye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bulbs with short dormancy had higher activity, and a greater no. of isozymes than bulbs with long dormancy.”
t0“Onion Bulbs”
Claim · model-written summary
Preharvest maleic hydrazide spray did not affect bulb peroxidase activity.
- Taxon
- OnionAllium cepat0
- Treatment
- A commercial preharvest spray of maleic hydrazide (MH)e0
- Outcome
- peroxidase activitye0
- Direction
- did not affecte0
- Qualifier
- either dormancy typee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A commercial preharvest spray of maleic hydrazide (MH) did not affect peroxidase activity in bulbs of either dormancy type.”
t0“Onion Bulbs”
The same questions in other papers
application · physiology: antioxidant enzymes · Allium cepa (onion)Positive and negative results
3 in the opposite direction
- positive
- positive
- positive
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.