Abstract
Although presowing hydration treatments are known to be capable of improving the germination performance of wheat seeds, no comprehensive information is available, especially with regard to the effectiveness of such treatments on seeds subjected to deterioration under different conditions. This study reports an attempt to understand the responses of a single high‐quality seed lot of wheat ( Triticum aestivum L.) to two different storage regimes (100% relative humidity, 40 °C for up to 6 d or at a constant seed moisture content of 0.15 g H 2 O g −1 fresh weight at 35 °C for up to 50 d). At the same time the relative abilities of three presowing hydration‐dehydration treatments to protect or repair the deteriorating seeds were compared. Although losses of viability and increases in radicle emergence rates followed a similar pattern for both regimes, assessments of electrical conductivity of seed leachate and seedling growth indicated that the mechanisms of deterioration varied under the two aging conditions. A 2‐h prestorage hydration treatment at 25 °C followed by drying allowed maintenance of germinability in storage, but only had marginal effects when applied after aging. Longer hydration treatments (24 h at 15 °C in water or 20 h at 20 °C in −0.37 MPa polyethylene glycol solution) applied after storage were effective at restoring germination rates of seeds that remained viable. if applied before storage, however, these two treatments severely increased the seeds' susceptibility to deterioration. These results demonstrate that (i) not all aspects of deterioration in wheat seeds are irreversible, and (ii) losses of seed vigor and viability are not necessarily features of the same continuum of deteriorative metabolism. Such combinations of treatments and storage conditions should provide useful systems for the systematic study of deteriorative metabolism in aging wheat seeds.
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Claims 10
Claim · model-written summary
Losses of viability and increases in radicle emergence rates followed a similar pattern under both storage regimes in wheat seeds.
- Taxon
- wheat
Triticum aestivume1 - Treatment
- two different storage regimese3
- Outcome
- losses of viability and increases in radicle emergence ratese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“a single high‐quality seed lot of wheat ( Triticum aestivum L.)”
e2“Although losses of viability and increases in radicle emergence rates followed a similar pattern for both regimes”
e3“to two different storage regimes”
Claim · model-written summary
Electrical conductivity of seed leachate and seedling growth indicated that deterioration mechanisms varied under the two aging conditions in wheat.
- Taxon
- wheatTriticum aestivume1
- Treatment
- two aging conditionse4
- Outcome
- electrical conductivity of seed leachate and seedling growthe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“a single high‐quality seed lot of wheat ( Triticum aestivum L.)”
e4“assessments of electrical conductivity of seed leachate and seedling growth indicated that the mechanisms of deterioration varied under the two aging conditions”
Claim · model-written summary
A 2‐h prestorage hydration treatment at 25 °C followed by drying maintained germinability in storage in wheat seeds.
- Taxon
- wheatTriticum aestivume1
- Treatment
- A 2‐h prestorage hydration treatment at 25 °C followed by dryinge5
- Outcome
- germinability in storagee5
- Direction
- allowed maintenancee5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“a single high‐quality seed lot of wheat ( Triticum aestivum L.)”
e5“A 2‐h prestorage hydration treatment at 25 °C followed by drying allowed maintenance of germinability in storage”
Claim · model-written summary
The same 2‐h prestorage hydration treatment had only marginal effects when applied after aging in wheat seeds.
- Taxon
- wheatTriticum aestivume1
- Treatment
- A 2‐h prestorage hydration treatment at 25 °C followed by dryinge5
- Outcome
- effectse6
- Direction
- marginale6
- Qualifier
- applied after aginge6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“a single high‐quality seed lot of wheat ( Triticum aestivum L.)”
e5“A 2‐h prestorage hydration treatment at 25 °C followed by drying allowed maintenance of germinability in storage”
e6“but only had marginal effects when applied after aging”
Claim · model-written summary
Longer hydration in water (24 h at 15 °C), applied after storage, restored germination rates of wheat seeds that remained viable.
- Taxon
- wheatTriticum aestivume1
- Treatment
- 24 h at 15 °C in watere7
- Outcome
- germination ratese7
- Direction
- restoringe7
- Qualifier
- seeds that remained viablee7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“a single high‐quality seed lot of wheat ( Triticum aestivum L.)”
e7“Longer hydration treatments (24 h at 15 °C in water or 20 h at 20 °C in −0.37 MPa polyethylene glycol solution) applied after storage were effective at restoring germination rates of seeds that remained viable”
Claim · model-written summary
Longer hydration in −0.37 MPa polyethylene glycol solution (20 h at 20 °C), applied after storage, restored germination rates of wheat seeds that remained viable.
- Taxon
- wheatTriticum aestivume1
- Treatment
- 20 h at 20 °C in −0.37 MPa polyethylene glycol solutione7
- Outcome
- germination ratese7
- Direction
- restoringe7
- Qualifier
- seeds that remained viablee7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“a single high‐quality seed lot of wheat ( Triticum aestivum L.)”
e7“Longer hydration treatments (24 h at 15 °C in water or 20 h at 20 °C in −0.37 MPa polyethylene glycol solution) applied after storage were effective at restoring germination rates of seeds that remained viable”
Claim · model-written summary
Longer hydration in water (24 h at 15 °C), applied before storage, severely increased wheat seed susceptibility to deterioration.
- Taxon
- wheatTriticum aestivume1
- Treatment
- 24 h at 15 °C in watere7
- Outcome
- susceptibility to deterioratione2
- Direction
- severely increasede2
- Qualifier
- if applied before storagee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“a single high‐quality seed lot of wheat ( Triticum aestivum L.)”
e7“Longer hydration treatments (24 h at 15 °C in water or 20 h at 20 °C in −0.37 MPa polyethylene glycol solution) applied after storage were effective at restoring germination rates of seeds that remained viable”
e2“if applied before storage, however, these two treatments severely increased the seeds' susceptibility to deterioration”
Claim · model-written summary
Longer hydration in −0.37 MPa polyethylene glycol solution (20 h at 20 °C), applied before storage, severely increased wheat seed susceptibility to deterioration.
- Taxon
- wheatTriticum aestivume1
- Treatment
- 20 h at 20 °C in −0.37 MPa polyethylene glycol solutione7
- Outcome
- susceptibility to deterioratione2
- Direction
- severely increasede2
- Qualifier
- if applied before storagee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“a single high‐quality seed lot of wheat ( Triticum aestivum L.)”
e7“Longer hydration treatments (24 h at 15 °C in water or 20 h at 20 °C in −0.37 MPa polyethylene glycol solution) applied after storage were effective at restoring germination rates of seeds that remained viable”
e2“if applied before storage, however, these two treatments severely increased the seeds' susceptibility to deterioration”
Claim · model-written summary
Not all aspects of deterioration in wheat seeds are irreversible.
- Taxon
- wheatTriticum aestivume3
- Outcome
- aspects of deterioratione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“not all aspects of deterioration in wheat seeds are irreversible”
Claim · model-written summary
Losses of seed vigor and viability are not necessarily features of the same continuum of deteriorative metabolism in wheat.
- Taxon
- wheatTriticum aestivume1
- Outcome
- losses of seed vigor and viabilitye4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“a single high‐quality seed lot of wheat ( Triticum aestivum L.)”
e4“losses of seed vigor and viability are not necessarily features of the same continuum of deteriorative metabolism”
The same questions in other papers
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- negative
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- no effect
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33 papers in the same direction as this paper · 27 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
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See all 62 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.