Abstract
SummaryApples, cv. Golden Delicious were subjected to ten preharvest sprays of 1.2% CaCl2 at weekly intervals. At the beginning of the climacteric stage, the fruits were harvested and sorted to small (4–5 cm dia.) and average (6–7.5 cm dia.) sizes, and stored at ambient conditions (25°C). The firmness of small fruits was higher than average ones. Application of CaCl2 resulted in higher flesh firmness at the time of harvest in average fruits but showed no significant changes in small ones. However, after three weeks of storage, both average and small fruits were showing better retention of firmness by CaCl2 treatment. Thus, preharvest treatment of CaCl2 may not necessarily always lead to firmer fruits at the time of harvest but may result in better retention of firmness during storage. The results are discussed in relation to cell-wall yield, β-D-galactosidase activity, total, free, ionically associated and covalently bound pectins, and hemicellulose contents. The differences in behaviour of average and small fruits to calcium application seem to be associated with the calcium content of covalently bound pectin fraction of the walls.
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Claims 5
Claim · model-written summary
Small apples were firmer than average-size apples.
- Taxon
- apples
Malus domesticat0 - Organ / stage
- small fruitse0
- Outcome
- firmnesse0
- Direction
- highere0
- Comparator
- average onese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“apples”
e0“The firmness of small fruits was higher than average ones.”
Claim · model-written summary
Calcium spray increased flesh firmness at harvest in average-size fruit.
- Taxon
- applesMalus domesticat0
- Organ / stage
- average fruitse0
- Treatment
- Application of CaCl2e0
- Outcome
- flesh firmnesse0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“apples”
e0“Application of CaCl2 resulted in higher flesh firmness at the time of harvest in average fruits”
Claim · model-written summary
Calcium spray did not significantly change firmness at harvest in small fruit.
- Taxon
- applesMalus domesticat0
- Organ / stage
- small onese0
- Treatment
- Application of CaCl2e0
- Outcome
- flesh firmnesse0
- Direction
- no significant changese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“apples”
e0“Application of CaCl2 resulted in higher flesh firmness at the time of harvest in average fruits but showed no significant changes in small ones.”
Claim · model-written summary
Calcium-treated average and small fruits retained firmness better after three weeks of storage.
- Taxon
- applesMalus domesticat0
- Treatment
- CaCl2 treatmente0
- Outcome
- retention of firmnesse0
- Direction
- bettere0
- Qualifier
- after three weeks of storagee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“apples”
e0“after three weeks of storage, both average and small fruits were showing better retention of firmness by CaCl2 treatment.”
Claim · model-written summary
Fruit-size differences in calcium response appeared associated with calcium in covalently bound wall pectin.
- Taxon
- applesMalus domesticat0
- Treatment
- calcium applicatione0
- Compound
- calcium content of covalently bound pectin fractione0
- Outcome
- differences in behaviour of average and small fruitse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“apples”
e0“The differences in behaviour of average and small fruits to calcium application seem to be associated with the calcium content of covalently bound pectin fraction of the walls.”
The same questions in other papers
calcium chloride dihydrate · quality: postharvest · Malus domestica (apple)Results differ
40 papers in the same direction as this paper · 5 in the opposite direction · 1 reporting no difference from an alternative
- positive
- positive
- positive
43 papers more in this group
See all 47 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.