Abstract
Shade, caused by a dense leaf canopy in the light conditions of a normal greenhouse, reduced sprouting of the third axillary bud (from the top) on decapitated rose branches ( Rosa hybrida cv. Marimba) in comparison to less shaded buds on branches protruding above the canopy and sparsely spaced. Flowering of the third young shoot on shaded branches bearing 3 lateral shoots was totally inhibited. Mixed fluorescent and incandescent light in a growth chamber reduced sprouting of the third bud on decapitated rose branches in comparison to decapitated branches on rose plants held in fluorescent light of similar photon flux density. This was attributed to the higher R:FR ratio in fluorescent vs mixed light that reached the third bud, and in exposed vs shaded branches. Flowering of the third shoot was promoted by several factors: high photon flux density, 0.5 m M gibberellic acid (GA) or 0.2 m M benzyladenine (BA). BA was the most effective treatment. Treatments promoting flowering of the third shoot did not reduce growth or flowering of the upper shoots. However, spraying the uppermost shoot with BA suppressed the growth of the shoots below. It is concluded that light affects flowering in two ways. The effect on bud sprouting is related mainly to R:FR ratios, while the effect on flower development is related mainly to photon flux density. Cytokinins may substitute for the light effect on flower development.
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Claims 12
Claim · model-written summary
Shade from a dense leaf canopy reduced sprouting of the third axillary bud on decapitated rose branches compared with less shaded buds.
- Taxon
- Rosa hybrida cv. Marimba
Rosa hybrid cultivare0 - Organ / stage
- third axillary bude1
- Treatment
- dense leaf canopye1
- Outcome
- sprouting of the third axillary bude1
- Direction
- reducede1
- Comparator
- less shaded budse1
- Setting
- normal greenhousee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rosa hybrida cv. Marimba”
e1“Shade, caused by a dense leaf canopy in the light conditions of a normal greenhouse, reduced sprouting of the third axillary bud (from the top) on decapitated rose branches ( Rosa hybrida cv. Marimba) in comparison to less shaded buds”
Claim · model-written summary
Shaded branches totally inhibited flowering of the third young shoot.
- Taxon
- Rosa hybrida cv. MarimbaRosa hybrid cultivare0
- Treatment
- shaded branchese2
- Outcome
- Flowering of the third young shoote2
- Direction
- inhibitede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rosa hybrida cv. Marimba”
e2“Flowering of the third young shoot on shaded branches bearing 3 lateral shoots was totally inhibited”
Claim · model-written summary
Mixed fluorescent and incandescent light reduced sprouting of the third bud compared with fluorescent light in a growth chamber.
- Taxon
- Rosa hybrida cv. MarimbaRosa hybrid cultivare0
- Treatment
- Mixed fluorescent and incandescent lighte3
- Outcome
- sprouting of the third bude3
- Direction
- reducede3
- Comparator
- fluorescent lighte3
- Setting
- growth chambere3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rosa hybrida cv. Marimba”
e3“Mixed fluorescent and incandescent light in a growth chamber reduced sprouting of the third bud on decapitated rose branches in comparison to decapitated branches on rose plants held in fluorescent light of similar photon flux density”
Claim · model-written summary
High photon flux density promoted flowering of the third shoot.
- Taxon
- Rosa hybrida cv. MarimbaRosa hybrid cultivare0
- Treatment
- high photon flux densitye4
- Outcome
- Flowering of the third shoote4
- Direction
- promotede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rosa hybrida cv. Marimba”
e4“Flowering of the third shoot was promoted by several factors: high photon flux density, 0.5 m M gibberellic acid (GA) or 0.2 m M benzyladenine (BA)”
Claim · model-written summary
Gibberellic acid at 0.5 m M promoted flowering of the third shoot.
- Taxon
- Rosa hybrida cv. MarimbaRosa hybrid cultivare0
- Treatment
- gibberellic acide4
- Outcome
- Flowering of the third shoote4
- Direction
- promotede4
- Value
- 0.5 m Me4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rosa hybrida cv. Marimba”
e4“Flowering of the third shoot was promoted by several factors: high photon flux density, 0.5 m M gibberellic acid (GA) or 0.2 m M benzyladenine (BA)”
Claim · model-written summary
Benzyladenine at 0.2 m M promoted flowering of the third shoot.
- Taxon
- Rosa hybrida cv. MarimbaRosa hybrid cultivare0
- Treatment
- benzyladeninee4
- Outcome
- Flowering of the third shoote4
- Direction
- promotede4
- Value
- 0.2 m Me4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rosa hybrida cv. Marimba”
e4“Flowering of the third shoot was promoted by several factors: high photon flux density, 0.5 m M gibberellic acid (GA) or 0.2 m M benzyladenine (BA)”
Claim · model-written summary
Benzyladenine was the most effective treatment for promoting flowering of the third shoot.
- Taxon
- Rosa hybrida cv. MarimbaRosa hybrid cultivare0
- Treatment
- BAe5
- Outcome
- Flowering of the third shoote4
- Direction
- most effectivee5
- Comparator
- gibberellic acide4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rosa hybrida cv. Marimba”
e4“Flowering of the third shoot was promoted by several factors: high photon flux density, 0.5 m M gibberellic acid (GA) or 0.2 m M benzyladenine (BA)”
e5“BA was the most effective treatment”
Claim · model-written summary
Treatments promoting flowering of the third shoot did not reduce growth or flowering of the upper shoots.
- Taxon
- Rosa hybrida cv. MarimbaRosa hybrid cultivare0
- Treatment
- Treatments promoting floweringe6
- Outcome
- growth or flowering of the upper shootse6
- Direction
- did not reducee6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rosa hybrida cv. Marimba”
e6“Treatments promoting flowering of the third shoot did not reduce growth or flowering of the upper shoots”
Claim · model-written summary
Spraying the uppermost shoot with BA suppressed growth of the shoots below.
- Taxon
- Rosa hybrida cv. MarimbaRosa hybrid cultivare0
- Treatment
- spraying the uppermost shoot with BAe7
- Outcome
- growth of the shoots belowe7
- Direction
- suppressede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rosa hybrida cv. Marimba”
e7“However, spraying the uppermost shoot with BA suppressed the growth of the shoots below”
Claim · model-written summary
Bud sprouting is related mainly to R:FR ratios.
- Taxon
- Rosa hybrida cv. MarimbaRosa hybrid cultivare0
- Treatment
- R:FR ratiose1
- Outcome
- bud sproutinge1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rosa hybrida cv. Marimba”
e1“The effect on bud sprouting is related mainly to R:FR ratios”
Claim · model-written summary
Flower development is related mainly to photon flux density.
- Taxon
- Rosa hybrida cv. MarimbaRosa hybrid cultivare0
- Treatment
- photon flux densitye1
- Outcome
- flower developmente1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rosa hybrida cv. Marimba”
e1“while the effect on flower development is related mainly to photon flux density”
Claim · model-written summary
Cytokinins may substitute for the light effect on flower development.
- Taxon
- Rosa hybrida cv. MarimbaRosa hybrid cultivare0
- Compound
- Cytokininse1
- Outcome
- flower developmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rosa hybrida cv. Marimba”
e1“Cytokinins may substitute for the light effect on flower development”
The same questions in other papers
Gibberellic acid · phenology · Rosa hybrid cultivarResults agree
1 paper in the same direction as this paper
- positive
N-benzyladenine · phenology · Rosa hybrid cultivarResults agree
2 papers in the same direction as this paper
- positive
- positive
light · phenology · Rosa hybrid cultivarPositive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
3 papers more in this group
See all 7 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.