Abstract
Summary In these investigations plastic films with different transmission for UV radiation were used to investigate the changes of leaf and flower colours of ornamental plants. The aim was to quantify and to qualify the effect of different UV-spectra of the natural radiation under practical conditions. UVB caused a decrease of the chlorophyll content of Coleus × hybrida . Therefore the yellow pigments of a green-yellow cultivar and the red pigments of a redgreen cultivar emerged. UVB also caused brighter leaves of Dendranthema × grandiflorum . No loss of plant quality was recognised as a result of chlorophyll degradation. UVA induced the synthesis of anthocyanins in flowers and leaves of Kalanchoe × hybrida 'Colorado', increased by UVB. It is possible to use this positive effect in plant production. Whereas the production of anthocyanins in the leaves of non-hardened plants as a result of increased UVB-radiation in springtime must be mentioned as a negative effect. The use of UV-radiation to harden young plants can be suggested. It is possible to use UV-selective plastic films to influence varieties with coloured leaves, positive changes in flower colour of some ornamentals are possible.
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Claims 9
Claim · model-written summary
UVB reduced chlorophyll in Coleus × hybrida.
Not reportedComparator
Verbatim
e0“UVB caused a decrease of the chlorophyll content of Coleus × hybrida”
Claim · model-written summary
UVB revealed yellow and red pigments in Coleus cultivars.
- Outcome
- yellow pigments of a green-yellow cultivar and the red pigments of a redgreen cultivar emergede0
Not reportedTaxonTreatmentComparatorDirection
Verbatim
e0“Therefore the yellow pigments of a green-yellow cultivar and the red pigments of a redgreen cultivar emerged”
Claim · model-written summary
UVB brightened Dendranthema × grandiflorum leaves.
- Taxon
- Dendranthema × grandiflorum
Chrysanthemum ×morifoliume0 - Treatment
- UVBe0
- Outcome
- leavese0
- Direction
- brightere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“UVB also caused brighter leaves of Dendranthema × grandiflorum”
Claim · model-written summary
Chlorophyll degradation did not reduce plant quality.
Not reportedTaxon
Verbatim
e0“No loss of plant quality was recognised as a result of chlorophyll degradation”
Claim · model-written summary
UVA induced anthocyanins in Kalanchoe × hybrida flowers and leaves.
- Taxon
- Kalanchoe × hybridae0
- Material
- Coloradoe0
- Organ / stage
- flowers and leavese0
- Treatment
- UVAe0
- Outcome
- synthesis of anthocyaninse0
- Direction
- inducede0
Not reportedComparator
Verbatim
e0“UVA induced the synthesis of anthocyanins in flowers and leaves of Kalanchoe × hybrida 'Colorado'”
Claim · model-written summary
UVB further increased anthocyanin synthesis.
Not reportedTaxonComparatorOutcome
Verbatim
e0“increased by UVB”
Claim · model-written summary
Increased spring UVB produced anthocyanins in non-hardened leaves, viewed negatively.
- Taxon
- plantsViridiplantaee0
- Treatment
- increased UVB-radiatione0
- Outcome
- production of anthocyaninse0
Not reportedComparatorDirection
Verbatim
e0“production of anthocyanins in the leaves of non-hardened plants as a result of increased UVB-radiation in springtime must be mentioned as a negative effect”
Claim · model-written summary
The authors suggest UV radiation to harden young plants.
- Taxon
- plantsViridiplantaee0
- Treatment
- UV-radiatione0
- Outcome
- harden young plantse0
Verbatim
e0“The use of UV-radiation to harden young plants can be suggested”
Claim · model-written summary
UV selective films can influence coloured-leaf varieties and improve some ornamental flower colours.
Verbatim
e0“It is possible to use UV-selective plastic films to influence varieties with coloured leaves, positive changes in flower colour of some ornamentals are possible”
The same questions in other papers
uv · quality: phytochemicals · Viridiplantae (plants)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
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.