Abstract
SummaryThe effects of constant high temperatures of 25 and 307C in comparison with a low temperature storage regime at 2&C were investigated on storability of two bulb onion (Allium cepa L.) cvs. Texas Early Grano and Dorcheh (an Iranian cultivar) under 65–75% relative humidity for a period of 270 days. In both cultivars, sprouting of onion bulb is inhibited at high storage temperatures as a result of significant reduction in the relative growth rate of sprout leaves within the bulbs, compared with low-temperature storage at 2&C treatments in both cultivars, and onions became nearly dormant. Onion cv. Texas Early Grano maintained marketability at temperatures of 25 and 30&C for periods of three and two months, respectively. During the first 3–4 months of storage at these high temperatures there was no significant change in pH, total soluble solid (TSS) and titratable acidity of the bulbs contents, compared with a low temperature of 2&C for both cultivars. However, over longer periods, rotting and desiccation in bulbs increased and cv. Texas Early Grano showed significantly more weight loss and rotting than cv. Dorcheh. The data indicate that weight loss due to desiccation was a major index in onion for the determination of storage potential at high temperatures, and that is varies between cultivars.
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Claims 8
Claim · model-written summary
High temperatures inhibited bulb sprouting in both cultivars.
- Taxon
- Allium cepa L.
Allium cepat0 - Treatment
- high storage temperaturese0
- Outcome
- sprouting of onion bulbe0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In both cultivars, sprouting of onion bulb is inhibited at high storage temperatures”
t0“Allium cepa L.”
Claim · model-written summary
High temperature significantly reduced sprout leaf growth relative to low temperature.
- Taxon
- Allium cepa L.Allium cepat0
- Outcome
- relative growth rate of sprout leavese0
- Direction
- reductione0
- Comparator
- low-temperature storage at 2&Ce0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant reduction in the relative growth rate of sprout leaves within the bulbs, compared with low-temperature storage at 2&C treatments in both cultivars”
t0“Allium cepa L.”
Claim · model-written summary
Texas Early Grano remained marketable for three months at 25 degrees.
- Taxon
- Allium cepa L.Allium cepat0
- Material
- Texas Early Granoe0
- Outcome
- marketabilitye0
- Value
- threee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Onion cv. Texas Early Grano maintained marketability at temperatures of 25 and 30&C for periods of three and two months, respectively”
t0“Allium cepa L.”
Claim · model-written summary
Texas Early Grano remained marketable for two months at 30 degrees.
- Taxon
- Allium cepa L.Allium cepat0
- Material
- Texas Early Granoe0
- Outcome
- marketabilitye0
- Value
- two monthse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Onion cv. Texas Early Grano maintained marketability at temperatures of 25 and 30&C for periods of three and two months, respectively”
t0“Allium cepa L.”
Claim · model-written summary
Bulb pH, soluble solids, and titratable acidity did not change significantly over the first three to four months.
- Taxon
- Allium cepa L.Allium cepat0
- Treatment
- high temperaturese0
- Outcome
- pH, total soluble solid (TSS) and titratable aciditye0
- Direction
- no significant changee0
- Comparator
- low temperature of 2&Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During the first 3–4 months of storage at these high temperatures there was no significant change in pH, total soluble solid (TSS) and titratable acidity of the bulbs contents, compared with a low temperature of 2&C for both cultivars”
t0“Allium cepa L.”
Claim · model-written summary
Bulb rotting and desiccation increased over longer storage periods.
- Taxon
- Allium cepa L.Allium cepat0
- Outcome
- rotting and desiccation in bulbse0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“over longer periods, rotting and desiccation in bulbs increased”
t0“Allium cepa L.”
Claim · model-written summary
Texas Early Grano had significantly greater weight loss and rotting than Dorcheh.
- Taxon
- Allium cepa L.Allium cepat0
- Material
- Texas Early Granoe0
- Outcome
- weight loss and rottinge0
- Direction
- moree0
- Comparator
- Dorchehe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cv. Texas Early Grano showed significantly more weight loss and rotting than cv. Dorcheh”
t0“Allium cepa L.”
Claim · model-written summary
Desiccation weight loss was a major index of high-temperature storage potential and varied by cultivar.
- Taxon
- Allium cepa L.Allium cepat0
- Outcome
- weight loss due to desiccatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“weight loss due to desiccation was a major index in onion for the determination of storage potential at high temperatures, and that is varies between cultivars”
t0“Allium cepa L.”
The same questions in other papers
storage · quality: postharvest · Allium cepa (onion)Positive and negative results
17 papers in the same direction as this paper · 9 in the opposite direction · 1 reporting no difference from an alternative
- negative
- no effect
- negative
24 papers more in this group
See all 28 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.