Abstract
The influence of seed priming and ageing treatments on viability and rate of germination of tomato (Lycopersicon esculentum Mill.) seeds was examined under both long-term and controlled-deterioration storage conditions. Seeds of a single lot of tomato were either primed or aged to increase or decrease the rate of germination (Argerich and Bradford, 1989). They were then stored at 6% moisture content (dry weight basis) at either 4 °C or 30 °C for 1 year. Both viability and germination rate were unaffected by either storage temperature in control seeds, or by 4 °C storage in primed or aged seeds. At 30 °C, however, viability and germination rate of primed and aged seeds was markedly reduced after 6 months of storage. The temperature dependence of the germination rate and the spread of germination times within the population was also adversely affected by high temperature storage, particularly for primed seeds. Under controlled deterioration conditions (13.5% moisture content and 50 °C), the rate of loss of viability was greater for primed seed than for control or aged seeds. The relationship between seed viability and the mean germination rate, however, was not influenced by the seed treatments. These data are analysed in relation to current models of seed deterioration during storage and seed repair during priming. The results indicate that enhancement of seed germination rates by priming treatments simultaneously lowers the resistance of seeds to deterioration. Primed tomato seeds must, therefore, be considered to be vigorous seeds with a reduced storage life.
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Claims 8
Claim · model-written summary
Control tomato seed viability and germination rate were unaffected by either storage temperature.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- either storage temperaturee0
- Outcome
- viability and germination ratee0
- Direction
- unaffectede0
- Qualifier
- control seedse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both viability and germination rate were unaffected by either storage temperature in control seeds”
t0“Tomato”
Claim · model-written summary
Storage at 4 °C did not affect viability and germination rate in primed or aged tomato seeds.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- 4 °C storagee0
- Outcome
- viability and germination ratee0
- Direction
- unaffectede0
- Qualifier
- primed or aged seedse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both viability and germination rate were unaffected by either storage temperature in control seeds, or by 4 °C storage in primed or aged seeds.”
t0“Tomato”
Claim · model-written summary
At 30 °C, primed and aged tomato seeds lost viability and germination rate markedly after six months.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- 30 °Ce0
- Outcome
- viability and germination ratee0
- Direction
- markedly reducede0
- Value
- 6 monthse0
- Qualifier
- primed and aged seedse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 30 °C, however, viability and germination rate of primed and aged seeds was markedly reduced after 6 months of storage.”
t0“Tomato”
Claim · model-written summary
High temperature storage adversely affected temperature dependence of tomato seed germination rate and spread of germination times, particularly in primed seeds.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- high temperature storagee0
- Outcome
- temperature dependence of the germination rate and the spread of germination timese0
- Direction
- adversely affectede0
- Qualifier
- particularly for primed seedse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The temperature dependence of the germination rate and the spread of germination times within the population was also adversely affected by high temperature storage, particularly for primed seeds.”
t0“Tomato”
Claim · model-written summary
Under controlled deterioration, primed tomato seed lost viability faster than control or aged seed.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- primed seede0
- Outcome
- rate of loss of viabilitye0
- Direction
- greatere0
- Qualifier
- controlled deterioration conditions (13.5% moisture content and 50 °C)e0
- Comparator
- control or aged seedse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under controlled deterioration conditions (13.5% moisture content and 50 °C), the rate of loss of viability was greater for primed seed than for control or aged seeds.”
t0“Tomato”
Claim · model-written summary
Seed treatments did not alter the relationship between tomato seed viability and mean germination rate.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- seed treatmentse0
- Outcome
- relationship between seed viability and the mean germination ratee0
- Direction
- not influencede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The relationship between seed viability and the mean germination rate, however, was not influenced by the seed treatments.”
t0“Tomato”
Claim · model-written summary
Priming enhanced tomato seed germination rates.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- priming treatmentse0
- Outcome
- seed germination ratese0
- Direction
- enhancemente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“enhancement of seed germination rates by priming treatments”
t0“Tomato”
Claim · model-written summary
Priming lowered resistance of tomato seeds to deterioration.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- priming treatmentse0
- Outcome
- resistance of seeds to deterioratione0
- Direction
- lowerse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“priming treatments simultaneously lowers the resistance of seeds to deterioration.”
t0“Tomato”
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