Abstract
Postharvest longevity and sensitivity to short-term ethylene exposure of several miniature potted Parade ® rose varieties were investigated. Plants were treated with a continuous flow of 1µl l -1 ethylene for 24 h at 20° ° ° °C when plants were at marketable stage (3-5 open flowers). The reaction to the injurious effects of exogenous ethylene can occur after a short exposure time of 24 h with considerable variation found in the response among varieties. The varieties response to ethylene differed in the time it took for visible symptoms to appear, the amount of damage observed and the plant part affected (buds verses flowers). For most varieties, it took several days before the effects of ethylene were evident. The varieties ‘Charming’, ‘Fiesta’ and ‘Lady’ did not respond significantly to ethylene. These varieties, which have long lasting qualities under ethylene free conditions, withstood this amount of ethylene without visible symptoms. The other varieties had an increase in bud and/or flower damage when exposed to ethylene. The magnitude of ethylene effects and the plant part affected was found to be variety dependent. Short lasting varieties were consistently found to be sensitive to ethylene, while most, but not all, long lasting varieties were tolerant.
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Claims 8
Claim · model-written summary
Injury after 24-hour ethylene exposure varied substantially among rose varieties.
Verbatim
e0“The reaction to the injurious effects of exogenous ethylene can occur after a short exposure time of 24 h with considerable variation found in the response among varieties.”
t0“POTTED ROSE VARIETIES”
Claim · model-written summary
Varieties differed in symptom timing, damage amount and affected buds or flowers.
Verbatim
e0“The varieties response to ethylene differed in the time it took for visible symptoms to appear, the amount of damage observed and the plant part affected (buds verses flowers).”
t0“POTTED ROSE VARIETIES”
Claim · model-written summary
Ethylene effects became evident only after several days in most varieties.
Verbatim
e0“For most varieties, it took several days before the effects of ethylene were evident.”
t0“POTTED ROSE VARIETIES”
Claim · model-written summary
Charming showed no significant response or visible symptoms after ethylene exposure.
Verbatim
e0“The varieties ‘Charming’, ‘Fiesta’ and ‘Lady’ did not respond significantly to ethylene. These varieties, which have long lasting qualities under ethylene free conditions, withstood this amount of ethylene without visible symptoms.”
t0“POTTED ROSE VARIETIES”
Claim · model-written summary
Fiesta showed no significant response or visible symptoms after ethylene exposure.
Verbatim
e0“The varieties ‘Charming’, ‘Fiesta’ and ‘Lady’ did not respond significantly to ethylene. These varieties, which have long lasting qualities under ethylene free conditions, withstood this amount of ethylene without visible symptoms.”
t0“POTTED ROSE VARIETIES”
Claim · model-written summary
Lady showed no significant response or visible symptoms after ethylene exposure.
Verbatim
e0“The varieties ‘Charming’, ‘Fiesta’ and ‘Lady’ did not respond significantly to ethylene. These varieties, which have long lasting qualities under ethylene free conditions, withstood this amount of ethylene without visible symptoms.”
t0“POTTED ROSE VARIETIES”
Claim · model-written summary
Other rose varieties had increased bud or flower damage after ethylene exposure.
Not reportedComparator
Verbatim
e0“The other varieties had an increase in bud and/or flower damage when exposed to ethylene.”
t0“POTTED ROSE VARIETIES”
Claim · model-written summary
Short-lasting varieties were consistently ethylene sensitive, while most long-lasting varieties were tolerant.
- Taxon
- ROSEt0
- Material
- Short lasting varietiese0
- Outcome
- sensitive to ethylenee0
- Comparator
- long lasting varietiese0
Not reportedDirection
Verbatim
e0“Short lasting varieties were consistently found to be sensitive to ethylene, while most, but not all, long lasting varieties were tolerant.”
t0“POTTED ROSE VARIETIES”
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