Abstract
The ripening inhibitor (rin) and non-ripening (nor) mutants each contribute additively as heterozygotes to delay ripening as measured by time from anthesis to the respiratory peak. The rin mutant as a heterozygote has no effect on the magnitude of the respiratory rise, whereas nor reduces the respiratory peak to about 50% of normal. The respiratory rise is further reduced to about 25% of normal in the double mutant hybrid (+ rin, + nor). Peak ethylene and fruit carotene production is reduced about 50% in single mutant hybrids and to 25% of normal in the double mutant hybrid. Polygalacturonase activity 5 days after the respiratory peak in heterozygotes of rin and nor and the double mutant hybrid was 35, 25 and 10% of normal, respectively. Ethephon treatment hastened ripening in all genotypes, but the magnitude of specific ripening events was determined by genotype. The mode of action of these mutants is not directly through endogenous ethylene but probably via a slow change which precedes the ethylene rise and other concomitant ripening changes. It is proposed that polygalacturonase synthesis or activation may represent the primary genetic event which is inhibited in the mutants and attenuated in mutant hybrids.
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Claims 14
Claim · model-written summary
rin heterozygosity delayed ripening.
- Taxon
- Tomato
Solanum lycopersicumt0 - Material
- rine0
- Outcome
- time from anthesis to the respiratory peake0
- Direction
- delaye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato ( Lycopersicon esculentum Mill.)”
e0“The ripening inhibitor (rin) and non-ripening (nor) mutants each contribute additively as heterozygotes to delay ripening as measured by time from anthesis to the respiratory peak.”
Claim · model-written summary
nor heterozygosity delayed ripening.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- nore0
- Outcome
- time from anthesis to the respiratory peake0
- Direction
- delaye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato ( Lycopersicon esculentum Mill.)”
e0“The ripening inhibitor (rin) and non-ripening (nor) mutants each contribute additively as heterozygotes to delay ripening as measured by time from anthesis to the respiratory peak.”
Claim · model-written summary
rin heterozygotes did not change the respiratory rise magnitude.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- rine0
- Outcome
- magnitude of the respiratory risee0
- Direction
- no effecte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato ( Lycopersicon esculentum Mill.)”
e0“The rin mutant as a heterozygote has no effect on the magnitude of the respiratory rise”
Claim · model-written summary
nor heterozygotes reduced the respiratory peak to about half of normal.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- nore0
- Outcome
- respiratory peake0
- Direction
- reducese0
- Value
- about 50% of normale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato ( Lycopersicon esculentum Mill.)”
e0“whereas nor reduces the respiratory peak to about 50% of normal.”
Claim · model-written summary
The double mutant hybrid reduced the respiratory rise to about one quarter of normal.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- double mutant hybrid (+ rin, + nor)e0
- Outcome
- respiratory risee0
- Direction
- reducede0
- Value
- about 25% of normale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato ( Lycopersicon esculentum Mill.)”
e0“The respiratory rise is further reduced to about 25% of normal in the double mutant hybrid (+ rin, + nor).”
Claim · model-written summary
Single mutant hybrids had approximately half normal peak ethylene production.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- single mutant hybridse0
- Outcome
- Peak ethylenee0
- Direction
- reducede0
- Value
- about 50%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato ( Lycopersicon esculentum Mill.)”
e0“Peak ethylene and fruit carotene production is reduced about 50% in single mutant hybrids”
Claim · model-written summary
Single mutant hybrids had approximately half normal fruit carotene production.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- single mutant hybridse0
- Outcome
- fruit carotene productione0
- Direction
- reducede0
- Value
- about 50%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato ( Lycopersicon esculentum Mill.)”
e0“Peak ethylene and fruit carotene production is reduced about 50% in single mutant hybrids”
Claim · model-written summary
The double mutant hybrid had one quarter normal peak ethylene production.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- double mutant hybride0
- Outcome
- Peak ethylenee0
- Direction
- reducede0
- Value
- 25% of normale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato ( Lycopersicon esculentum Mill.)”
e0“Peak ethylene and fruit carotene production is reduced about 50% in single mutant hybrids and to 25% of normal in the double mutant hybrid.”
Claim · model-written summary
The double mutant hybrid had one quarter normal fruit carotene production.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- double mutant hybride0
- Outcome
- fruit carotene productione0
- Direction
- reducede0
- Value
- 25% of normale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato ( Lycopersicon esculentum Mill.)”
e0“Peak ethylene and fruit carotene production is reduced about 50% in single mutant hybrids and to 25% of normal in the double mutant hybrid.”
Claim · model-written summary
rin heterozygotes had 35% normal polygalacturonase activity five days after the respiratory peak.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- rine0
- Organ / stage
- 5 days after the respiratory peake0
- Gene
- Polygalacturonasee0
- Outcome
- Polygalacturonase activitye0
- Value
- 35e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato ( Lycopersicon esculentum Mill.)”
e0“Polygalacturonase activity 5 days after the respiratory peak in heterozygotes of rin and nor and the double mutant hybrid was 35, 25 and 10% of normal, respectively.”
Claim · model-written summary
nor heterozygotes had 25% normal polygalacturonase activity five days after the respiratory peak.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- nore0
- Gene
- Polygalacturonasee0
- Outcome
- Polygalacturonase activitye0
- Value
- 25e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato ( Lycopersicon esculentum Mill.)”
e0“Polygalacturonase activity 5 days after the respiratory peak in heterozygotes of rin and nor and the double mutant hybrid was 35, 25 and 10% of normal, respectively.”
Claim · model-written summary
The double mutant hybrid had 10% normal polygalacturonase activity.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- double mutant hybride0
- Gene
- Polygalacturonasee0
- Outcome
- Polygalacturonase activitye0
- Value
- 10% of normale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato ( Lycopersicon esculentum Mill.)”
e0“Polygalacturonase activity 5 days after the respiratory peak in heterozygotes of rin and nor and the double mutant hybrid was 35, 25 and 10% of normal, respectively.”
Claim · model-written summary
Ethephon hastened ripening across genotypes.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- Ethephon treatmente0
- Outcome
- ripeninge0
- Direction
- hastenede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato ( Lycopersicon esculentum Mill.)”
e0“Ethephon treatment hastened ripening in all genotypes”
Claim · model-written summary
Genotype determined the magnitude of specific ripening events under ethephon treatment.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- genotypee0
- Outcome
- magnitude of specific ripening eventse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato ( Lycopersicon esculentum Mill.)”
e0“but the magnitude of specific ripening events was determined by genotype.”
The same questions in other papers
(2-chloroethyl)phosphonic acid · quality: postharvest · Solanum lycopersicum (tomato)Positive and negative results
20 papers in the same direction as this paper · 3 in the opposite direction
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See all 24 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.