Abstract
Experiments with olive ( Olea europaea L.) shoot explants were carried out to determine the influence of winter chilling on the release of axillary buds from dormancy. This investigation was designed to explore an alternative explanation for the confusing concept surrounding the role of chilling in olive floral induction. Leafy explants collected from 10 Nov. to 6 Mar. were grown in a greenhouse under mist at 13/24C (night/day) and in a growth chamber at 10/21C (night/day) to determine the end of dormancy. Growth of floral buds from leafy explants was first recorded from 5 Jan. samples. After that date the percentage of developing floral buds and rate of their development increased. Floral bud abscission, increase in bud fresh weight, and simultaneous decrease of relative bud dry weight were associated with growth initiation of floral buds. Manual defoliation of adult trees during the period of shoot explant collection indicated that leaves play a critical role in development once the floral buds had completed dormancy. Supplementary chilling of isolated shoots collected 20 Jan. demonstrated that 7.2C was sufficient to complete chilling requirements, while 12.5C allowed both the completion of chilling requirements and the proper temperature for subsequent floral bud growth. Winter chilling is required to release previously initiated floral buds from dormancy, and we question the previous concept that the role of chilling is to induce olive floral initiation.
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Claims 9
Claim · model-written summary
Growth of olive floral buds from leafy explants was first recorded in samples from 5 January.
- Taxon
- Olea europaea
Olea europaeae1 - Organ / stage
- floral budse2
- Outcome
- Growth of floral budse2
- Qualifier
- first recorded from 5 Jan. samplese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Experiments with olive ( Olea europaea L.) shoot explants were carried out to determine the influence of winter chilling on the release of axillary buds from dormancy”
e2“Growth of floral buds from leafy explants was first recorded from 5 Jan. samples”
Claim · model-written summary
The percentage of developing floral buds and their rate of development increased after that date.
- Taxon
- Olea europaeaOlea europaeae1
- Organ / stage
- floral budse3
- Outcome
- percentage of developing floral buds and rate of their developmente3
- Direction
- increasede3
- Qualifier
- After that datee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Experiments with olive ( Olea europaea L.) shoot explants were carried out to determine the influence of winter chilling on the release of axillary buds from dormancy”
e3“After that date the percentage of developing floral buds and rate of their development increased”
Claim · model-written summary
Floral bud abscission was associated with growth initiation of floral buds.
- Taxon
- Olea europaeaOlea europaeae1
- Organ / stage
- floral budse4
- Outcome
- Floral bud abscissione4
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Experiments with olive ( Olea europaea L.) shoot explants were carried out to determine the influence of winter chilling on the release of axillary buds from dormancy”
e4“Floral bud abscission, increase in bud fresh weight, and simultaneous decrease of relative bud dry weight were associated with growth initiation of floral buds”
Claim · model-written summary
Bud fresh weight increased with growth initiation of olive floral buds.
- Taxon
- Olea europaeaOlea europaeae1
- Organ / stage
- floral budse4
- Outcome
- bud fresh weighte4
- Direction
- increasee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Experiments with olive ( Olea europaea L.) shoot explants were carried out to determine the influence of winter chilling on the release of axillary buds from dormancy”
e4“Floral bud abscission, increase in bud fresh weight, and simultaneous decrease of relative bud dry weight were associated with growth initiation of floral buds”
Claim · model-written summary
Relative bud dry weight decreased with growth initiation of olive floral buds.
- Taxon
- Olea europaeaOlea europaeae1
- Organ / stage
- floral budse4
- Outcome
- relative bud dry weighte4
- Direction
- decreasee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Experiments with olive ( Olea europaea L.) shoot explants were carried out to determine the influence of winter chilling on the release of axillary buds from dormancy”
e4“Floral bud abscission, increase in bud fresh weight, and simultaneous decrease of relative bud dry weight were associated with growth initiation of floral buds”
Claim · model-written summary
Leaves play a critical role in olive floral bud development once buds have completed dormancy.
- Taxon
- Olea europaeaOlea europaeae1
- Treatment
- Manual defoliatione5
- Outcome
- developmente5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Experiments with olive ( Olea europaea L.) shoot explants were carried out to determine the influence of winter chilling on the release of axillary buds from dormancy”
e5“Manual defoliation of adult trees during the period of shoot explant collection indicated that leaves play a critical role in development once the floral buds had completed dormancy”
Claim · model-written summary
Supplementary chilling at 7.2 C was sufficient to complete chilling requirements of isolated olive shoots.
- Taxon
- Olea europaeaOlea europaeae1
- Organ / stage
- isolated shootse6
- Treatment
- Supplementary chillinge6
- Outcome
- complete chilling requirementse6
- Value
- 7.2Ce6
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Experiments with olive ( Olea europaea L.) shoot explants were carried out to determine the influence of winter chilling on the release of axillary buds from dormancy”
e6“Supplementary chilling of isolated shoots collected 20 Jan. demonstrated that 7.2C was sufficient to complete chilling requirements, while 12.5C allowed both the completion of chilling requirements and the proper temperature for subsequent floral bud growth”
Claim · model-written summary
Supplementary chilling at 12.5 C allowed the proper temperature for subsequent olive floral bud growth, with chilling requirements completed.
- Taxon
- Olea europaeaOlea europaeae1
- Organ / stage
- isolated shootse6
- Treatment
- Supplementary chillinge6
- Outcome
- subsequent floral bud growthe6
- Value
- 12.5Ce6
- Qualifier
- completion of chilling requirementse6
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Experiments with olive ( Olea europaea L.) shoot explants were carried out to determine the influence of winter chilling on the release of axillary buds from dormancy”
e6“Supplementary chilling of isolated shoots collected 20 Jan. demonstrated that 7.2C was sufficient to complete chilling requirements, while 12.5C allowed both the completion of chilling requirements and the proper temperature for subsequent floral bud growth”
Claim · model-written summary
Winter chilling is required to release previously initiated olive floral buds from dormancy.
- Taxon
- Olea europaeaOlea europaeae1
- Treatment
- Winter chillinge7
- Outcome
- release previously initiated floral buds from dormancye7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Experiments with olive ( Olea europaea L.) shoot explants were carried out to determine the influence of winter chilling on the release of axillary buds from dormancy”
e7“Winter chilling is required to release previously initiated floral buds from dormancy”
The same questions in other papers
cold · growth · Olea europaea (common olive)Results agree
5 papers in the same direction as this paper
- positive
- positive
- positive
2 papers more in this group
See all 6 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.