Abstract
Summary Changes in seed quality in pepper ( Capsicum annuum L.) were monitored during seed development and maturation in two seasons. Seed quality was assessed by a number of different tests, but principally by determining seed storage longevity in laboratory tests and seedling growth in glasshouse tests. Mass maturity (defined as the end of the seed‐filling phase) occurred 49–53 days after anthesis (DAA) in 1989 (varying among fruit layers) and 53 DAA in 1990 when seed moisture contents were 51–53%. The onset of both germinability and desiccation tolerance occurred either just before or at mass maturity. Maximum potential longevity (assessed by the value of the seed lot constant K i ) was achieved 63–65 DAA, i.e. not until 10–12 days after mass maturity (DAMM), in both years. Seedling dry weights in the glasshouse growth tests were maximal later still ‐ for seeds harvested 17–21 DAMM in 1989 and 17 DAMM in 1990; the effects on seedling weight arose from differences in times from sowing to emergence ( P < 0.005) among different seed harvests, with no significant differences in subsequent relative growth rates ( P > 0.25). Seed priming reduced mean germination times for seeds harvested at all stages of development, but had little effect on germination capacity and potential longevity, and did not affect the pattern of changes in potential longevity during seed development and maturation. The results contradict the hypothesis that seed quality is maximal at the end of the seed‐filling phase and that viability and vigour begin to decline immediately thereafter.
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Claims 10
Claim · model-written summary
Mass maturity in pepper occurred 49-53 days after anthesis in 1989 and 53 days after anthesis in 1990, when seed moisture contents were 51-53%.
- Taxon
- Capsicum annuum
Capsicum annuumt0 - Outcome
- Mass maturitye1
- Value
- 49–53 days after anthesis (DAA) in 1989e2
- Qualifier
- seed moisture contents were 51–53%e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Capsicum annuum”
e1“Mass maturity”
e2“occurred 49–53 days after anthesis (DAA) in 1989 (varying among fruit layers) and 53 DAA in 1990 when seed moisture contents were 51–53%”
Claim · model-written summary
In pepper seeds the onset of germinability and desiccation tolerance occurred either just before or at mass maturity.
- Taxon
- Capsicum annuumCapsicum annuumt0
- Outcome
- onset of both germinability and desiccation tolerancee1
- Qualifier
- either just before or at mass maturitye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Capsicum annuum”
e1“The onset of both germinability and desiccation tolerance occurred either just before or at mass maturity”
Claim · model-written summary
Maximum potential longevity of pepper seeds was reached 63-65 days after anthesis, 10-12 days after mass maturity, in both years.
- Taxon
- Capsicum annuumCapsicum annuumt0
- Outcome
- Maximum potential longevitye1
- Value
- 63–65 DAAe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Capsicum annuum”
e1“Maximum potential longevity (assessed by the value of the seed lot constant K i ) was achieved 63–65 DAA, i.e. not until 10–12 days after mass maturity (DAMM), in both years”
Claim · model-written summary
Seedling dry weights in glasshouse growth tests were maximal for pepper seeds harvested 17-21 days after mass maturity in 1989 and 17 days after mass maturity in 1990.
- Taxon
- Capsicum annuumCapsicum annuumt0
- Outcome
- Seedling dry weightse1
- Value
- 17–21 DAMM in 1989 and 17 DAMM in 1990e2
- Setting
- glasshouse growth testse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Capsicum annuum”
e1“Seedling dry weights in the glasshouse growth tests were maximal later still”
e2“for seeds harvested 17–21 DAMM in 1989 and 17 DAMM in 1990”
Claim · model-written summary
Differences in seedling weight among pepper seed harvests arose from significant differences in time from sowing to emergence.
- Taxon
- Capsicum annuumCapsicum annuumt0
- Outcome
- times from sowing to emergencee1
- Qualifier
- P < 0.005e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Capsicum annuum”
e1“differences in times from sowing to emergence ( P < 0.005) among different seed harvests”
Claim · model-written summary
There were no significant differences in subsequent relative growth rates of seedlings among pepper seed harvests.
- Taxon
- Capsicum annuumCapsicum annuumt0
- Outcome
- subsequent relative growth ratese1
- Qualifier
- P > 0.25e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Capsicum annuum”
e1“no significant differences in subsequent relative growth rates ( P > 0.25)”
Claim · model-written summary
Seed priming reduced mean germination times of pepper seeds harvested at all stages of development.
- Taxon
- Capsicum annuumCapsicum annuumt0
- Treatment
- Seed priminge1
- Outcome
- mean germination timese1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Capsicum annuum”
e1“Seed priming reduced mean germination times for seeds harvested at all stages of development”
Claim · model-written summary
Seed priming had little effect on germination capacity and potential longevity of pepper seeds.
- Taxon
- Capsicum annuumCapsicum annuumt0
- Treatment
- Seed priminge1
- Outcome
- germination capacity and potential longevitye1
- Direction
- little effecte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Capsicum annuum”
e1“Seed priming reduced mean germination times for seeds harvested at all stages of development, but had little effect on germination capacity and potential longevity”
Claim · model-written summary
Seed priming did not affect the pattern of changes in potential longevity during pepper seed development and maturation.
- Taxon
- Capsicum annuumCapsicum annuumt0
- Treatment
- Seed priminge1
- Outcome
- pattern of changes in potential longevitye2
- Direction
- did not affecte2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Capsicum annuum”
e1“Seed priming”
e2“did not affect the pattern of changes in potential longevity during seed development and maturation”
Claim · model-written summary
The authors conclude that the results contradict the hypothesis that pepper seed quality is maximal at the end of the seed-filling phase.
- Taxon
- Capsicum annuumCapsicum annuumt0
- Outcome
- seed qualitye1
- Qualifier
- contradict the hypothesis that seed quality is maximal at the end of thee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Capsicum annuum”
e1“The results contradict the hypothesis that seed quality is maximal at the end of the”
The same questions in other papers
seed treatment · pest · Capsicum annuum (sweet pepper)Positive and negative results
1 in the opposite direction
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seed treatment · growth · Capsicum annuum (sweet pepper)Positive and negative results
23 papers in the same direction as this paper · 2 in the opposite direction · 1 reporting no difference from an alternative
- positive
- negative
- no effect
23 papers more in this group
See all 27 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.